WebDAQ/100 Specifications                                       10/18/00

A/D


12-bit resolution, 500 KHz max. total sampling rate (#ch * rate), 32 channels (16 differential)
Maximum input range +/- 10 Volts
Gains: 1, 4, 10, 40, 100, 400
Data rate for client computer download: 5 to 10 Ksamples/sec (binary mode), depending on format options

Unless otherwise noted specs are worst case maximum at instrument calibration temperature. Values are preliminary, and will be updated to include typical values when that information is available. All LSB units are expressed in terms of a 12-bit resolution least-significant-bit (e.g., 4.88mV at gain 1, or 48.8 uV at gain 100).

ABSOLUTE ACCURACY 1.1 LSB
COMMON-MODE REJECTION RATIO: (at 60 Hz)
System Gain 1 , 4:  80 dB min 100 dB typical
System Gain 10 , 40:  86 dB min 110 dB typical
System Gain 100 , 400:  92 dB min 120 dB typical

COMMON-MODE INPUT RANGE: +/- 10 Volts
INPUT BIAS CURRENT: 53.2 nA max
INPUT IMPEDANCE: 2 MegOhms
INPUT CLAMPING LEVEL: 11 to 13.15 Volts
ANALOG INPUTs OVERVOLTAGE CLAMPING CURRENT:
             Non repetitive surge current: 2.0 Amp max per pin for 0.1 msec.
             Non repetitive surge current: 7.0 Amp max (sum of all pins) for 0.1 msec.
             Overvoltage input clamping current: +/- 90 mA continuous (sum of all pins)
TEMPERATURE DEPENDENCE:
             OFFSET
                          (at gain = 1): 83 uVolts/degree C. = 0.02 LSB/degree C.
                          (at gain = 4): 281 uVolts/degree C. = 0.23 LSB/degree C.
                          (at gain = 10): 29 uVolts/degree C. = 0.06 LSB/degree C.
                          (at gain = 40): 65 uVolts/degree C. = 0.54 LSB/degree C.
                          (at gain = 100): 24 uVolts/degree C. = 0.49 LSB/degree C.
                          (at gain = 400): 43 uVolts/degree C. = 3.52 LSB/degree C.
             GAIN
                          Gains 1, 4, 10, 40: 0.12 LSB/degree C.
                          Gains 100, 400: 0.51 LSB/degree C.
SYSTEM NONLINEARITY:
                          Integral nonlinearity 1.1 LSB
                          Differential nonlinearity 0.45 LSB
 
 
D/A

10-bit resolution, 33 KHz per channel, 8 channels
Output range +/- 10 Volts
Max. current 5 mA

Details/notes:
Factory and self-calibration adjust the D/A range and offset to provide accurate output. In the process, the D/A bit resolution may be adjusted slightly, so the minimum D/A step size can vary from approx. 21.5 mV to 23.5 mV.


Digital I/O


4 bits input, can be time-sampled, standard TTL logic voltage levels
4 bits output, can do timed pattern generation
standard TLL logic levels, current drive capability: -15mA source, 24mA sink

Communication Ports


Ethernet 10-baseT with RJ45 connector
Serial (RS-232) 9-pin connector, DTE, default set to 38400 baud, 8 bits, no parity, 1 stop bit


Power Supply

             · 90 - 264 VAC
             · 47 to 63 Hz
             · Approx. 18 watts power consumption

Size and Weight

 Dimensions  7.5" x 10.375" x 2.675"  19cm x 26.5cm x 7cm
 Weight  34 oz.  965 gm
 Shipping box  12.375" x 14.5" x 5"  31.5cm x 37cm x 13cm 
    4.6 lb  2.1 kg
 Power supply  2.125" x 4.5" x 1.75"   5.5cm x 11.5cm x 4.5cm
   20 oz with line cord  570 gm

RAM memory

            · 72-pin SIMM module
            · Page-mode memory
            · 70 nsec or less access time
            · size: 4MB, 8MB, 16MB, 32MB, 64MB or 128MB

Environmental


            operating: 0 degrees C to +40 degrees C.
            non-operating: -10 degrees C to +70 degrees C.
            0% to 90% relative humidity (non-condensing)


Certifications


United States:
Conforms to the requirements of:
FCC Rules and Regulations, Part 15, Subpart B, Class A
Radiated Emissions: - Para. 15.109(b)
Conducted Emissions: - Para. 15.107(b)


Canada:
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.


European Union: Conforms to the requirements of: EN 61326:1998
Emissions requirements of EN 61326:1998
Class A, Conducted Emissions, 150 kHZ to 30 MHz
Class A, Radiated Emissions, 30 MHZ to 1 GHz
Immunity requirements of EN 61326:1998
IEC 1000-4-2:1995 Electrostatic discharge, 8 KV Direct Air, 4 KV Direct and Indirect Contact.
IEC 1000-4-3:1995 Radiated RF Immunity, 80 MHz - 1000 MHz, 10V/m, 80% AM 1 KHz.
IEC 1000-4-4:1995 EFT, 2KV Direct to Power Leads, 1KV to I/O Leads through Coupling Clamp.
IEC 1000-4-5:1995 Surge Immunity, 2KV Common Mode, 1 KV Differential Mode.
IEC 1000-4-6:1995 Conducted RF Immunity, 150 KHz - 80 MHz, 3 Vrms, 80% AM 1KHz.
IEC 1000-4-8:1995 Magnetic Immunity, 50 Hz, 30 A/m
IEC 1000-4-11:1994 Voltage Dips and Short Interruptions


Australia:
Conforms to the requirements of: AS/NZS 3548


Japan:
Conforms to the requirements of: VCCI V-3/99.05 AMD June 1999, for Class A, ITE, Conducted and Radiated Disturbance.


Disclaimers


The information contained in this documentation is believed to be accurate and reliable. However, Capital Equipment Corporation assumes no responsibility for its use or for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent rights of Capital Equipment Corporation.
This documentation is copyrighted by Capital Equipment Corporation. Copyright 2000 CEC.


Please see printed materials for a statement of warranties. Except as specified in written materials accompanying the product, Capital Equipment Corporation makes no warranties, express or implied of merchantability or fitness for a particular purpose. Customer's right to recover damages shall be limited to recovery of the purchase price. Capital Equipment Corporation shall not be liable for damages resulting from loss of data, profits, use of products, or incidental or consequential damages, even if advised of the possibility thereof. This product is not designed with components of a level of reliability suitable for use in treatment or diagnosis of humans, life support or clinical applications.


webDAQ and webDAQ/100 are trademarks of Capital Equipment Corporation. All rights reserved.

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