MODEL 6700-SCB
POWERED CAMAC CRATE (700 WATTS)
DESCRIPTION: MODEL 6700 POWERED CRATE
The Model 6700 is
a Powered CAMAC Crate which fully complies with CAMAC specification which fully
complies with IEEE-583. The Crate is housed in 12.25" (7u) side panels which
provide the mounting hardware for the Blower and Power Supply modules. Both
Power Supply and Blower modules are designed for simple plug-in installation
with no connectors to attach. Power Module cooling is provided by an internal
fan for drawing air form the inside of the relay rack (no air is drawn from the
crate blower area). The Blower module contains the crate cooling fans and the
current/voltage metering of the Power Supply outputs. Various options are
available to this unit and may or may not be installed in the unit. All options
are described in this manual and are indicated as options. The maximum output
power of the pairs (+/-) are best described as being power limited rather than
current limited. With none of the 24V outputs being utilized, considerably more
current can be drawn from the 6V outputs than is shown on the specification
sheets under normal conditions. However, when operating near the upper limits of
input line voltage and temperature, it is best to operate within the specified
current limits.
1.00 INSTALLATION:
The blower is inserted at the
front of the crate and secured by two latches at the rear of the blower. To
release, simply grab blower handles and pull. The power supply module is
inserted from the rear of the crate by placing the unit on the support tray and
sliding it towards crate to latch. A third latch at the rear of power supply
insures positive attachment. To release the power supply module the rear latch
must be released first. The latches on the front of the power supply are
released by pushing the two white buttons down that latch the power
supply.
2.00 MAIN CHASSIS:
2.10 INPUT POWER SELECTION:
Power is
applied to the power supply through a standard international AC receptacle at
the rear of the power supply, and to the blower module through fuses F15 and
F16. The front panel switch (S1) applies power to the three front blower fans
and back to the power supply fan and the three rear fans in the blower units.
Power to the transformer goes through the thermal switches Th-3 and TH-4 (one
each mounted on positive and negative side of the main heat sink) and under
over-temp conditions, power will be removed from the transformer, the power
module fan, and three of the blower fans. Power will resume when the over-temp
condition drops approximately 17 degrees. Thermal warning switch Th-1 and Th-2
(also mounted on the main heatsink) will cause the Hi-Temp lamp on the Blower
front panel to light when the heatsink temperature approaches within
approximately 10 degrees of the Th-3 and Th-4 setting.
Transformer T-1
provides three outputs: a heavy current winding for the 6V regulators, a medium
current winding for the 24V regulators, and a light duty winding for the
regulator boards bias supply. Rectification of the heavy current winding is
accomplished with heavy duty half wave rectifiers and should by replaced with
the same type. The light current (50mA.) fused winding provides a controlled
turn-on and turn-off bias voltage to the regulator boards that effectively
eliminates overshoots when turning the power on or off.
2.20 MAIN
HEATSINK
The main heatsink is assembled in two sections; a negative and a
positive side. Each side contains the transistors (4 for the 6V, 1 for the 12V,
and 1 for the 24V output) and thermal switches described above. Each drive
transistor is individually fused at the top of the power module. The fuse tray
is assembled with fourteen (14) fuses associated with 7 mounted on the positive
side and 7 mounted on the negative side.
2.40 POSITIVE REGULATOR
BOARD:
The positive regulator board contains four regulator sections: a low
power 30V DC supply, a 6V DC supply, a 24V DC supply, and a 12V DC
supply.
2.41 LM305H POSITIVE REGULATOR BOARD:
The LM305H positive
voltage regulator develops an internal voltage reference of approximately 1.6
volts at pin 5 which is compared with the sensed voltage at pin 6. Pin 3 is the
input voltage and pin 4 is ground. The output drive currents are seen at pin 1
and the IR drop between pins 1 & 8 clamps the output drive current at a
maximum level. Frequency compensation is set by the size of the capacitor
between pins 7 & 6. A capacitor between pins 5 & 4 is used to reduce the
amount of noise generated by the internal voltage reference. The LM305 is
capable of driving up to 65 amps with the appropriate current amplifiers and
frequency compensation networks. However, although the LM305 can be connected
such that it will exhibit current limit-foldback characteristics, for output
currents in excess of 5 amps it is necessary to provide external circuitry for
these functions as the temperature coefficient of the internal circuitry cannot
stay within required limits. The LM305's used in this equipment are limited to
less than 30mA. Output drive current is at pin 1 and has been tested and burned
in at that level with a 50V supply. At the 40 amp output of the 6V regulators to
a standard CAMAC crate, the LM305 will with the sense to output resistors
removed) regulate to better than .1%.
2.42 POSITIVE BIAS SUPPLY:
The
30V DC supply provides a low noise, low ripple bias volt to the three high
current regulator circuits. This supply is designed to control the turn-on and
turn-off characteristics of the output regulators and further reduce the ripple
and noise beyond the normal ability of the LM305 regulator device used in all
four circuits.
2.43 COMMON COMPONENTS:ALECS
Various components of the
positive regulator board are common to all the regulators. R9 is the common
resistor link between all of the sense return lines and ground return and may be
replaced with a 1 amp diode if more sensitive regulation is required. D1 is the
common crowbar zener reference voltage (6.2). The 30V DC output is common to all
the regulator circuits. The 30 volts has a current limit-foldback circuit
(R43-45), and will shut down all the regulators if overdriven.
Preload
Resistors: Each of the output regulators has a preload resistor which is
intended to set the minimum loading of the regulator and serves to reduce or
eliminate overshoot problems. The +6V preload is R1 (12-15 ohm) for the +12V and
R40 (200 ohm) for the +24V regulator.
2.44 +6 VOLT REGULATOR
CIRCUIT:
The 6 volt regulator circuit consists of three sections: the
regulator-driver (U1 and Q4), the current limit-foldback circuit (Q5, Q12), and
the crowbar circuit (Q6, Q7, & Q9). The regulator U1 provides drive current
to Q4 thru the current limit resistor R14. R14 limits the maximum level of drive
current to approximately 30mA. Q4 provides drive current to the resistors R2,
R3, R4, & R5. These resistors provide the drive to the output transistor
mounted on the main chassis heatsink.
To improve the efficiency of the 6
volt outputs, a couple of improvements were made to this power supply over older
units. The transformer secondary winding was reduced and the drive to the
regulator and the output transistors was provided from the 12 volt output and
/or the unregulated 6 volt supply through a diode gate. The drive supply from
the 12 volt output is before the current sense resistor and does not register on
the meter circuit. Under normal conditions, the unregulated 6 volt will be
higher than the 12 volt output and provide all the drive current. Under
conditions of low line voltage and high output current from the 6 volt
regulator, the drive current will come from the 12 volt output. In the +6 volt
regulator circuit, the diode gate is D4 (12 volt output) and D3 (6 volt
unregulated supply).
2.45 CURRENT LIMIT-FOLDBACK CIRCUIT:
The current
limit-foldback operates as follows: Q12 is connected as a diode to clamp the
resistor divider string RP1, R6, & R8 to a common point with the sense
resistor (R1 on the main chassis) and the load. Transistor Q5 acts as a current
shunt to the output of the U1 regulator when the voltage drop across the sense
resistor (R1 on the main chassis) exceeds the drop across RP1 & R6. Thus the
setting of RP1 controls the point at which the regulator will begin to current
limit.
Once the regulator begins to limit, the output voltage will begin
to drop and because RP1, R6 & R8 are clamped directly to the output thru
Q12, the voltage across RP1, R6 will also drop causing the current limit set
point to be reduced and result in the current foldback characteristic. If the
load is further increased, the current will continue to drop until it reaches
approximately 20% of the rated output. The minimum foldback current is
determined by the relationship between the resistor divider string RP1, R6,
& R8, a divider string made up of the sense resistor, the load resistance,
the resistance of the output lines to the load, and the ratio of the voltage
drop across the clamp Q12 to the output voltage.
When troubleshooting a
bad regulator, it is always necessary to remove Q5 from the circuit as faults in
the current limit circuitry are the most common cause of regulator problems and
even when operating properly, the current limit circuit will mask their faults
in the regulator.
2.46 CROWBAR CIRCUIT:
The crowbar circuit consists
of a differential amplifier Q7 & Q9 which compare a 6.2 volt reference to
the output voltage across the divider string R17 & R18. As the divider
string is sampling the total output voltage including drops in the return and
output lines, the trigger point will vary compared to the sensed voltage at the
load but should not exceed 7.5 volts in any case. Problems with false triggering
generally are caused by over-driving the output lines with excessive combined
currents of the 6 volt outputs or bad connections of the output plugs or wiring
to the plugs. When the sensed output exceeds the reference voltage, Q9 will
drive Q6 sufficient to turn on the SCR. If the regulator circuitry is operative,
the regulator will go into foldback current limiting until the supply is turned
off. If the regulator circuitry is inoperative, the SCR will blow all the driver
fuses.
2.47 +24 VOLT REGULATOR CIRCUIT:
The operation of the +24 volt
regulator circuits are identical to the +6V. The regulator U3 drives Q1 thru the
current limit resistor R36. Q1 drives the output transistor (mounted on the main
chassis heatsink) direct. Q17 & Q14 are the clamp and current shunt of the
current limit-foldback circuit. Q15 & Q16 are the crowbar differential
amplifier and Q8 is the SCR gate driver.
2.48 +12 VOLT REGULATOR
CIRCUIT:
The operation of the +12 volt regulator circuits are identical to
the +24V. The regulator U2 drives Q3 thru the current limit resistor R29. Q11 is
the current limit clamp and Q10 is the current shunt amplifier. There is no
crowbar circuit for the +12 volt output. The 12 volt drive current is derived
from the output of the +24 volt regulator before the +24 volt sense resistor.
R27 (.15 ohm, 2watt) is the current sense resistor for the 12 volt
output.
2.50 NEGATIVE REGULATOR BOARD:
The negative regulator board
contains four regulator sections: a low power -30 volt bias supply, a -6 volt
regulator, a -24 volt regulator, and a -12 volt regulator. These circuits
operate in the same manner as the positive regulator board circuits except that
they are inverted (that is, pnp transistors for npn's) and the basic regulator
is slightly different in the way it generates its reference voltage.
2.51
LM304 REGULATOR:
The LM304 negative regulator develops a reference voltage,
across the resistor(s) connected between pins 1 & 9, with an internal
current source set by the resistor connected between pins 2 & 3. The voltage
developed across pins 1 & 9 will be 1/2 the output voltage sensed at pin 8.
The output drive is from pin 7 and the maximum current delivered is limited by
the resistor connected between pins 6 & 5. The LM305H's used in this
equipment are tested and burned in with an input of 50 volts.
2.52 COMMON
COMPONENTS:
Components common to all the regulators on the negative board
include: R8, the common resistor link between all the sense return lines and
ground return, may be replaced with a 1 amp diode if more sensitive regulation
is desired. D2 develops the common crowbar zener reference voltage (-6.2). The
-30 volt bias supply is common to all the circuits.
Preload Resistors: As on
the positive regulator board, there are three preload resistors. R1 (12-15 ohm)
is the preload resistor for the -6 volt regulator, R38 (200 ohm) preloads the
-24 volt, and R24 preloads the -12 volt regulator.
2.53 -6 VOLT REGULATOR
CIRCUIT:
The -6 volt regulator circuit consists of three sections: the
regulator-driver (U1, Q5), the current limit-foldback circuit (Q4, Q9), and the
crowbar circuit (Q6, Q7 & Q8). The LM304 (U1) regulator gets drive current
from the current limit resistor R20 and drives Q5 to provide drive current to
the drive resistor bank consisting of R2, R3, R4, & R5. Output voltage
adjustment RP3 & R31 develop a reference voltage from the 1 amp current
source in U1 set by R10. The reference voltage is compared to 1/2 the voltage
seen at pin 8. Frequency compensation is internal and capacitor connected across
pins 4 & 5. The capacitor connected across pins 1 & 9 tends to reduce
noise generated by the reference current source.
The diode gate which
supplies drive current to the -6 volt regulator and output transistors (see
explanation under the +6 volt circuit), consists of D3 (drive form the -12
output) and D1 (drive form the unregulated -6 supply).
2.54 CURRENT
LIMIT-FOLDBACK CIRCUIT:
The current limit-foldback circuit, consisting of the
diode connected clamp Q9, current shunt Q4, and resistor divider string R6, R7,
& RP1, operate in the same manner as the +6 volt circuit except for the
pnp-npn inversion.
2.55 CROWBAR CIRCUIT:
The operation of the crowbar
circuit on the negative regulator board is identical to that of the positive
board.
2.56 -24 VOLT REGULATOR CIRCUIT:
The operation of the -24 volt
regulator is identical to that of the -6 volt circuit.
2.57 -12 VOLT
REGULATOR CIRCUIT:
The -12 volt regulator derives both its supply and drive
form the -24 volt output. Both are taken before the -24 volt output sense
resistor and are not seen by the meter. The regulator U2 drives the output
through Q2. The clamp and shunt amplifier for the current limit-foldback circuit
are Q10 and Q11 respectively. There is no crowbar circuit for the 12 volt output
and it is possible for the output to go to -24 volts if the driver or regulator
circuit is faulty. However, a fault in this circuit will generally cause the
output driver to open and the output to go to ground rather than -24 volts. R23
(.15 ohm) is causing the -12 to go into current foldback.
3.00 BLOWER
MODULE:
3.10 COOLING:
The Blower module contains six fans, each
capable of approximately 110 CFM of air drawn through three washable filters
housed in the Blower unit. The filters are made of foam and should be removed
and cleaned when an accumulation of dirt or dust can be seen. The front contains
the meter (3 1/5 digit LCD), power switch, Meter switch, test points for all
outputs, power-on neon indicator lamp, and the HI-TEMP lamp (neon on regular
blower, LED on a Status Bit blower). A blower with the Status Bit option will
also have BNC connector.
CAUTION: The output voltage test points are
connected directly to the output sense leads.
3.30 METERSWITCH:
The
meterswitch consists of a printed circuit board, a five button switch assembly,
and the components needed to power the LCD meter and equalize the current sense
voltage for proper reading on the meter. The resistor-zener diode string, R8
& D2, provide the isolated 9V power required by the LCD voltmeter. The LCD
operates at a full scale reading of 199.9 with an input of 1.999 volts. For
voltage monitoring, the output sense leads are applied to the 8094ASY output
thru a resistor divider network (R9 & R10) which results in a 24.0 reading
for 24 volt inputs, 12.0 reading for the 12 volt inputs, and a 06.0 reading for
6 volt inputs. For current monitoring of the 6 volt outputs, the LCD meter will
see .010 volts for each amp across the main chassis resistors R1 or R3,
resulting in a reading of 01.0. For current monitoring of the 12 volt outputs,
the voltages developed across the .15 ohm sense resistors (mounted on the
regulator boards) are applied to the 8094 ASY output thru a resistor divider
network with the same result as with the 24 volt. Components R7 and D1 are not
required.
3.40 LCD DIGITAL VOLTMETER:
The LCD Digital Voltmeter
consists of a .5" 3 1/5 digit LCD display, a printed circuit board, a 7106
Analog to Digital converter and components needed to provide the user with
voltage readings to a tenth of a volt and current readings accurate to
two-tenths of an amp. The decimal point is set at the factory to display tenths
and is used to establish a floating reference thru R1 & R4. Variable
resistor R4 is the reference set point and can be adjusted by the user to effect
the most accurate reading against a particular monitor point. The reference is
set at the factory to give the most accurate readings against the 6 volt output
voltages. If it is desirable to have more accurate reading on a current monitor
point, apply the output voltage thru a standard meter shunt, and set the R4 for
an exact reading by first going to the next points. This should result in an
accurate reading for that monitor point but can leave the other monitor points
with an accuracy of only two or three tenths.
Test points for all the
output voltages are provided on the front directly to the right of the LCD
meter. The black test point is meter return with the positive voltages on the
left row of red test points and negative voltages on the right row as marked on
the front panel.
4.00 CRATE DESCRIPTION:
The Model 6700 CAMAC Crate
consists of a Dataway motherboard in a 7U high case. The extra 2U is used to
mount a Blower module which provides the metering circuits for the outputs of
the Power Supply module and blowers for the cooling air to the
crate.
4.10 DATAWAY:
The dataway motherboard is a 5 layer multilayer
printed circuit board which uses high quality card edge connectors which are
soldered at all locations. Damage to the card edge connectors generally occurs
at stations 24 & 25 and is due to the insertion of double-width modules
which are not properly assembled. Mounting bars for the Dataway provide a cam
action which forces alignment of the module card edge but cannot correct for
those modules with wide connector strips or a heavy burr on the connector strip.
Repair of a Dataway connector is almost impossible and customers are advised to
return the Dataway assembly or entire Crate to the factory for
repairs.
4.20 GROUNDING:
A two (2) position terminal block is mounted
to the rear of the top interface cover to provide customer selection of the
system grounding. The two outside positions are wired to the chassis of the
Crate, Blower, and Power module. The inside positions are wired to the Clean
Earth bus bar and the Power Supply return bus bars. The location is clearly
marked on the interface cover. A three position jumper is provided (shipped with
all three grounds shorted together) which can be used for selectively shorting
any two together.
4.30 JACKING BARS:
The steel jacking bar is tapped
and labeled according to the CAMAC specifications and is replaceable. Although
we have had very few problems with these in the past, the tapped holes are
occasionally stripped and it generally takes less than half an hour to replace
the entire bar. An optional NIMs jacking bar can be furnished upon
request.
4.40 POWER CONNECTOR:
Due to the increased power requirements
(some applications are now using 75 amps from the 6 volt outputs), the number of
pins providing the 6 volt power to the Dataway has been increased form 3 to 5
amps. All input voltage and current monitor wiring also go through the power
connector to the blower.
5.00 STATUS BIT DESCRIPTION:
The Status Bit
Option provides a relay closure to the chassis when any of the monitored
voltages, currents, shared currents, and the over-temp thermostat are outside
the set tolerance. The reed relay contact is a normally closed contact and will
be closed with the power off. The relay contact is open when all inputs are
within set tolerances.
5.20 GENERAL:
Power is supplied by the +6 and
-6 sense inputs. The positive voltage inputs are applied directly to the High
/Low comparator inputs through resistor divider networks. The negative voltage
inputs are applied to the comparators through inverting amplifiers with gains
less than one. The current shunt inputs are applied first to a level shifting
differential amplifier which shifts the common mode level to ground (0 volts),
from the level shifting amplifier to an adjustable gain amplifier which provides
a 2.31 volt output at the desired maximum load condition. Positive current
amplifier outputs are applied to the High comparators and to a shared current
summing amplifier. The negative current amplifier outputs are applied to the
summing amplifier and through an inverting amplifier to a High comparator (sum
of both positive and negative currents).
The Hi-Temp thermostat is wired
to a pair of comparators, one of which drives the front panel Hi-Temp LED and
one which is "Ored" with the other comparator outputs to produce a status bit
relay indication. All comparator outputs are "Ored" together to drive the status
bit relay driver.
5.30 COMPARATORS:
Two comparators are used, High
comparators (comparing the input against a +2.31V reference) and Low comparators
(comparing the input against a + 2.31V reference). All comparators (except the
Hi-Temp LED driver) cause a status bit indication (relay closure to chassis) is
the compared inputs are HIGHer than the High reference or LOWer than the Low
reference.
5.40 REFERENCE SOURCE:
The reference source VR-1 and
amplifier IC8-1 provides the High/Low references of +2.31 & 2.06 volts
respectively. VR-1 provides an output of +2.50V J (nominal) to the unit gain
buffer amplifier IC8-1 through a resistor divider network. The output of the
amplifier is applied to a resistor divider network to develop the 2.31 and 2.06
volt references.
5.50 VOLTAGE INPUTS:
Positive voltage inputs are
applied directly to a High/Low comparator pair through a resistor divider
network which results in a +2.18 volt level when the input is at nominal. The
negative voltage inputs are applied to a High/Low comparator pair through an
inverting amplifier with a negative gain such that the result is +2.18 volts
when the input is at nominal. All circuits are identical in operation with
circuit differences being only the resistor divider networks. Inputs are clearly
marked on the schematic with a "S" suffix (+6S for the positive 6V). Outputs of
the comparators are clearly marked as "H" (High), "L" (Low), or "I" (Current).
Current designations without polarity marking are the shared current comparator
outputs (such as 24I).
5.60 CURRENT INPUTS:
All current monitoring
circuitry is identical in operation except for the resistor divider networks at
the input sections. The following description will be of the 24V section but
will apply to the 6 & 12V sections as well.
Inputs to the current
monitoring circuitry is developed across very low ohmic value resistors
connected in series with the high end of the power supply outputs and the load.
This means that the 1+ and 1- inputs of the +24V power supply output will have a
common mode voltage of +24V under no load condition and rise somewhat higher as
the load is increased. Divider networks at the input to the first amplifiers
reduce the common mode voltage to a level below the amplifiers supply voltages
(+6V). The first amplifier then acts to shift the common mode voltage to ground
(0V). R11 is used initially to adjust the output of these level shifting
amplifiers to 0V at no load. Outputs of the LS (level shifting) amplifiers are
applied to the inputs of adjustable gain (AG) amplifiers which are adjusted to
provide a 2.31V output at the maximum load condition desired. Outputs of the
positive input sides are positive and negative sides. Outputs of both AG
amplifiers are applied to a summing amplifier which will produce a +2.31V output
when the absolute sum of the two inputs equals 2.31 volts. The outputs of the
negative AG amplifier is also applied to a High comparator through a unity gain
inverting amplifier. The output of the positive AG amplifier is applied directly
to a High comparator.
To adjust the amplifiers, first set each LS
amplifier to 0V with no load conditions. Adjust each load to the desired maximum
load and adjust the individual AG amplifiers until you get a status bit
indication. All other current and voltage amplifiers are fixed and require no
adjustment.
5.70 TROUBLESHOOTING:
Due to the large number of
comparators "ORed" together, it is necessary to check the inputs of each
comparator to determine which circuit is in "status bit" if faulty. If the
reference voltage is low, one of the comparators is probably loading it and it
may be necessary to remove them one at a time until the loading condition is
removed.
WARRANTY
Equipment manufactured by Bi Ra Systems for use in
the United States is warranted against defects in design, workmanship, and
materials for a period of one (1) year from the date of shipment. Bi Ra Systems
will repair or replace, at its option, any such equipment found to be defective
on a return to factory basis. Repair charges will be applicable after the
warranty period has expired. Transportation charges for shipping the equipment
to Bi Ra Systems shall be paid by the customer, while transportation charges for
the return of the repaired equipment will be paid by Bi Ra Systems. Priority
shipping methods are available at the customer's expense. SOFTWARE products by
Bi Ra Systems are furnished under the terms and conditions of a separate
Software Product License Agreement is warranted for a period of ninety (90) days
from the date of shipment to conform to the Software Product Description (SPD)
applicable at the time of purchase. This warranty is contingent upon the proper
use of the software as detailed in the Software Product License Agreement and is
limited to the remedy of any non-conformance of the Software to the SPD.
PRODUCTS PURCHASED BY BI RA SYSTEMS FOR RESALE WILL CARRY THE ORIGINAL EQUIPMENT
MANUFACTURER'S WARRANTY, IF ANY.
These warranties shall not apply to
equipment or software that has been modified or serviced by other than a Bi Ra
Systems or an authorized distributor service engineer.
All warranties are
contingent upon proper use of the product or system. These warranties will not
apply (i) if adjustment, repair or parts replacement is required because of
accident, unusual physical, electrical, or electro-magnetic stress, neglect,
misuse, failure of electric power, air conditioning, humidity control,
transportation, failure to rotating media not furnished by Bi Ra Systems,
operation with media not meeting or not maintained in accordance with Bi Ra
Systems specification or causes other than ordinary use; or (ii) if the product
or system has been modified by the purchaser; or (iii) where Bi Ra Systems
serial numbers or warranty date decals have been removed or altered. In addition
to the forgoing, any application on-site warranty will not apply (i) if
prerequisite equipment (as specified by Bi Ra Systems price list, equipment
specifications, or contract(s) is missing, or (ii) if the product or system has
been installed by the purchaser without the supervision of or prior written
approval of Bi Ra Systems. Equipment may contain used parts which are equivalent
to new in performance when used in the equipment. BI RA SYSTEMS MAKES NO
WARRANTY OR MECHANTABLILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER
WARRANTY EITHER EXPRESS OR IMPLIED, EXCEPT AS IS EXPRESSLY SET FORTH
HEREIN.
Outside the United States, the equipment warranty is limited to the
replacement of the equipment and excludes shipping, insurance, taxes,
forwarders' fees, customs, or any other charges.
THE WARRANTY PERIOD MAY VARY
IN COUNTRIES OUTSIDE THE UNITED STATES. CONTACT BI RA SYSTEMS OR YOUR LOCAL
AUTHORIZED DISTRIBUTOR FOR SPECIFIC WARRANTY DETAILS.
LIMITATIONS OF
LIABILITY
The purchaser's exclusive remedy or any claim of any kind for loan
or damage connected with, or resulting from the design, manufacture, sale,
delivery, resale, or repair or use of any products furnished by Bi Ra Systems
including but not limited to any claim of negligence or other breach, shall be
the repair or replacement, F.O.B. factory, of the product or part thereof giving
rise to such claim. Bi Ra Systems liability for such repair or replacement shall
in no event exceed the contract price allocable to the products or part which
gives rise to the claim. BI RA SYSTEMS SHALL IN NO EVENT BE LIABLE FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
RETURN OF PRODUCTS
Bi Ra Systems
must be notified before any product is returned for any reason. The Customer
Service Department must issue a Return Material Authorization (RMA) number
before any product can be accepted for credit, exchange, or repair. In order to
provide an RMA number, Customer Service will need the complete model number,
serial number, original purchase order number, and details regarding the reason
for return and the service required.
All returns for CREDIT or EXCHANGE
are subject to Bi Ra Systems approval and will incur a minimum restocking charge
of ten (10) percent, as well as any incoming transportation charges or other
fees incurred by Bi Ra Systems.
All returns for WARRANTY REPAIR must
include a description of the problem and the name of a technical contact in case
the problem must be discussed. If the product is out of warranty, the customer
must contact Bi Ra Systems for an estimate of the repair charges and include a
purchase order number for the estimated repair charges.
Transportation
charges for shipping the products to Bi Ra Systems shall be paid by the
customer. Transportation charges for the return of the products that have be
exchanged shall be paid by the customer, while transportation charges for the
return of the repaired equipment will be paid by Bi Ra Systems. The return
shipment will be by UPS services, air freight, or truck. Premium methods of
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requested. If Bi Ra Systems selects the carrier, Bi Ra Systems will not thereby
assume any responsibility or liability in connection with the shipment nor shall
the carrier be in any way construed to be the agent of Bi Ra Systems.
After
obtaining a Return Material Authorization (RMA) number, customers should return
the product to:
BI RA SYSTEMS, INC.
2404
COMANCHE NE
ALBUQUERQUE, NEW MEXICO
87107
TELEPHONE: (505) 881-8887
FAX:(505) 888-0651
SERVICES
Contact Bi Ra Systems for details regarding the
following services: complete module design and development for both CAMAC and
FASTBUS products (this includes the design, complete drafting package from
schematic to artwork done on a CADNETICS/INTERGRAPH CAE/CAD System, proto type
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Bi Ra Systems,
Incorporated
2404 Comanche Road
NE
Albuquerque, New Mexico 87107
Ph : 505-881-8887
Fax:505-888-0651
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