23 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
34952A multifunction module
Digital input/output characteristics
with 32-bit DIO, 2-channel D/A
and totalizer
Four 8-bits channels, 8 bits wide, input or
output, non-isolated
Vin(L)
< 0.8 V (TTL)
> 2.0 V (TTL)
The multifunction module offers the
Vin(H)
Vout(L)
ꢀexibility you need for system control.
The 34952A has four 8-bit digital I/O
channels, a 100- kHz gated totalizer, and
two ± 12 V analog outputs—all on a single
earth-referenced module. The digital
inputs and totalizer input may be included
in a scan list. Alarm limits for the digital
and totalizer inputs are evaluated con-
tinuously, capturing and logging alarm
conditions even between scans. Connec-
tions can be made via standard 50-pin
Dsub cables or detachable terminal block.
The 34952T terminal block has a pinout for
connection to an external Opto 22 board.
< 0.8 V @ Iout = -400 mA
per output
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
226 - 1
Totalize input
100 kHz (max) rising or
falling edge, program-
mable
Signal level
Threshold
1 Vp-p (min) 42 Vpk (max)
0 V or TTL
Gate input
Count reset
Read speed
TTL-Hi, TTL-Lo, or none
Manual or read + reset
85 rds/s
Figure 15. 34952A multifunction module
Analog output characteristics
DAC 1, 2
Resolution
IOUT
± 12 V, non-isolated
1 mV
10 mA max
Settling time
1 ms to 0.01% of output
Accuracy
1 year
± (% of output + mV)
(0.25% + 20 mV)
Temp. coefꢀcient ± (0.015% + 1mV)/°C
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