Specifications 2
34980A Service Guide 25
34952A Multifunction Module Specifications and Characteristics
Digital input/output characteristics
Four 8-bits channels, 8 bits wide, input or output, non-isolated
Vin(L) < 0.8 V (TTL)
Vin(H) > 2.0 V (TTL)
Vout(L) < 0.8 V @ Iout = –400 mA
Vout(H) > 2.4 V @ Iout = 1 mA
Vin(H) (max) < 42 V with external open drain pull-up
Alarm Maskable pattern match or state change
Speed 4 ms (max) alarm sampling
Latency 5 ms (typical) to 34980A alarm output
Read/write speed 95/s
Totalize input characteristics
Max count 2
26
– 1
Totalize input 100 kHz (max) rising or falling edge, programmable
Signal level 1 Vp-p (min) 42 Vpk (max)
Threshold 0 V or TTL
Gate input TTL-Hi, TTL-Lo, or none
Count reset Manual or read + reset
Read speed 85 rds/s
Analog output characteristics
DAC 1, 2 ± 12 V, non-isolated
Resolution 1 mV
IOUT 10 mA max
Settling time 1 ms to 0.01% of output
Accuracy ± (% of output + mV)
1 year: ± (0.25% + 20 mV)
Temperature coefficient ± (0.015% + 1mV)/°C