Specifications 2
34980A Service Guide 31
Single Channel Measurement Rates — DMM Reading Rates
[1, 2]
[1]
Reading speeds for 60 Hz; autozero OFF
[2]
For fixed function and range, readings to memory, scaling and alarms off, autozero OFF
Scanning Measurement Rates to Bus or Memory
[1]
Speeds are for 4½ digits, delay 0, display off, autozero off. Scanning is within bank on the same module.
Add 10 ms for between banks or modules.
[2]
Add additional time for filter setting on ACV.
Function Resolution Rdgs/s
DCV 4-1/2 digits (0.02 plc)
5-1/2 digits (1 plc)
6-1/2 digits (10 plc)
3000
59
6
2-wire Resistance 4-1/2 digits (0.02 plc)
5-1/2 digits (1 plc)
6-1/2 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)
0.01°C (10 plc)
1900
58
6
ACV 6-1/2 fast (200 Hz)
6-1/2 Med (20 Hz)
6-1/2 slow (3 Hz)
350
350
300
Frequency, period 4-1/2 digits (10 ms)
5-1/2 digits (100 ms)
6-1/2 digits (1 s gate)
70
9
1
Direct Measurements – direct to I/O
(includes switch, measure time, and I/O time)
Direct
Measurment to
Memory
Scanning Channels
[1]
GPIB
ch/sec
USB 2.0
ch/sec
LAN (w/VXI
11)
ch/sec
Into memory
ch/sec
Scanning DCV or Ohms
34925A
34923A/24A
34921A/22A
920
588
109
860
572
109
980
605
109
1000
625
109
Scanning ACV
[2]
34925A
34923A/24A
34921A/22A
318
260
88
315
260
88
323
260
88
318
260
88
Scanning Temperature
34921A 109 109 109 109
Scanning Digital in
34950A 660 592 815 1038
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