28 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
34934A Multi-channel close speeds over GPIB (msec) Single channel measurement rates–DMM reading rates [1] [2]
Isolate or ꢀxed Auto 100
Auto 0
Function
Resolution
Rds/s
mode
0.97
0.43
0.22
0.13
mode
1.22
0.54
0.28
0.17
mode
DCV
4½ digits (0.02 plc)
5 ½ digits (1 plc)
6½ digits (10 plc)
3000
59
6
Close 2 channels
Close 5 channels
Close 10 channels
Close 60 channels
1.31
0.56
0.29
0.21
2-wire resistance
4½ digits (0.02 plc)
5½ digits (1 plc)
6 ½ digits (10 plc)
2000
58
6
Thermocouple
(0.02 plc)
0.1°C (1 plc)
2000
59
RTD/Thermistor
1°C (0.02 plc)
0.1°C (1 plc)
1900
58
0.01°C (10 plc)
6
ACV
6½ fast (200 Hz)
6½ Med (20 Hz)
6 ½ slow (3 Hz)
350
350
300
Frequency, period
4½ digits (10 ms)
5½ digits (100 ms)
6½ digits (1 s gate)
70
9
1
[1] Reading speeds for 60Hz; autozero OFF
[2] For fixed function and range, readings to memory, scaling and alarms off,
autozero OFF
Scanning measurement rates to bus or memory
Direct measurements – direct to I/O
(includes switch, measure time and I/O time)
Measurement
into memory
GPIB
ch/sec
USB 2.0
ch/sec
LAN (w/ VXI 11)
Into memory
ch/sec
Scanning channels [1]
ch/sec
Scanning DCV or 2-wire ohms
34925A
920
588
109
860
572
109
980
605
109
1000
625
109
34923A/24A
34921A/22A
Scanning ACV [2]
34925A
318
260
88
315
260
88
323
260
88
318
260
88
34923A/24A
34921A/22A
Scanning temperature
34921A
109
109
109
109
Scanning digital in
34950A
660
592
815
1038
[1] Speeds are for 4 1/2 digits, delay 0, display off, autozero off and scanning is within bank on the same module;
add 10ms for between banks or modules for 2-wire measurements; 4-wire measurements are slower
[2] Add additional time for filter setting on ACV
Data out of memory to LAN, USB, or GPIB
(data transfer rate with 1000 channel blocks)
GPIB
USB 2.0
LAN (w/ VXI 11) [1]
rds/sec
rds/sec
rds/sec
Readings
2560
1304
980
2400
1230
926
3542
1826
1361
readings with timestamp
readings with all format options ON
[1] LAN large block throughput rate is increased by approximately 30% using LAN sockets
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