INPUT CHARACTERISTICS



 All input connections are made with LEMO connectors.



 Negative NIM Inputs are 50 ohms, logic '0' = +/-lmA, LOGIC Ill = -14 to -18 mA.



 "TRIGGER"    A high impedance for positive logic levels. Positive

     logic '0' less than 0.5 V, logic Ill less than 1.5 V. Negative

     NIM for negative logic levels.



 "OR"    Negative NIM when jumpered as 50 ohm impedance. For

     high impedance, logic '0' = +/-50 mV, logic Ill = -0.7 to

     -0.9 V. "OR" is shipped as high impedance 'input OR.,



 "INHIBIT"    Negative NIM input.



 "RESET    Negative NIM input. Enabled only in 'bistable' mode.



 "ANALOG PROGRAM"   A high impedance, differential, analog input.

     Maximum input voltage: Differential = 6 to +12 V

         Common Mode= +/-6 V

     Recommended Input Voltage: Differential = 0 to +10.0 V

     Common Mode = +/-0.5 V



 OUTPUT CHARACTERISTICS



 ECL is a two pin header, 0.025 in. posts on 0.1 in. centers. All other output connections

 are made with LEMO connectors.



 Negative NIM Outputs are current source type, Logic '0' = 0 mA. typically. Logic Ill equals

 -16 mA. typically.



 "GATE"    Negative NIM output.



 "GATE"    Negative NIM output. The complement of "GATE".



 "DELAY"    Negative NIM output.



 "TTL"    A TTL compatible output. Logic Ill = 2.7 V, min. @

     45 mA maximum, logic '0' = 0.5 V maximum @ -100 mA

     maximum. TTL is jumper selected to be "GATE", "DELAY",

     or their complements. TTL is shipped as "GATE".



 "ECL"    A differential 100 ohm line driver. Logic '0' = -0.90,

     typically. Logic Ill = -1.7 V typically. Jumper selected as

     "GATE" or "DELAY. "ECL" is shipped as "GATE".



 PERFORMANCE SUMMARY



 Proprogation Delay   "TRIGGER" to:   "RESET" to:

     "GATE" 11 nsec maximum "GATE" 11 nsec maximum

     "TTL" 20 nsec maximum "TTL" 20 nsec maximum

     "ECL" 11 nsec maximum "ECL" 11 nSec maximum



     "OR" to:    "INHIBIT" to:

     "GATE" 8 nSec maximum "GATE" 6 nsec maximum

     "TTL" = 15 nsec maximum "TTL" 15 nsec maximum

     "ECL" = 8 nsec maximum "ECL" 8 nsec maximum

 Dead Time    The channel may be triggered immediately upon the comple-

     tion of the "GATE" logic Ill to logic '0' transition.