Datasheet
Find us at www.keysight.com Page 28
6½ med (20Hz)
6½ slow (3Hz)
350
350
Frequency, period
4½ digits (10 ms)
5½ digits (100 ms)
6½ digits (1 s gate)
70
9
1
1. Readings 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
Scanning channels
1
GPIB
ch/sec
USB 2.0
ch/sec
LAN (w VXI 11)
ch/sec
Into memory ch/sec
Scanning DCV or 2-wire 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
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 rds/sec
USB 2.0 rds/sec
LAN (w VXI 11)
1
rds/sec
Readings
2560
2400
3542
Readings with timestamp
1304
1230
1826
Readings with all format options ON
980
926
1361
1. LAN large block throughput rate is increased by approximately 30% using LAN sockets
Measurement characteristics with optional internal DMM
Measurement characteristics
DC voltage
Measurement method
Continuously integrating multi-slope III A-D converter
A-D linearity
0.0002% of reading + 0.0001% of range on 10 V range
Input resistance
100 mV, 1 V, 10 V ranges 100 V, 300 V
ranges
Selectable 10 M Ω or > 10,000 M Ω 10 M Ω ± 1%
Input bias current
< 50 pA at 25°C
Input protection
300 V all ranges
True RMS AC voltage
Measurement method
AC coupled True RMS—measures the AC component of the input with up to
300 VDC of bias on any range
Crest factor
Maximum of 5:1 at full scale
Additional crest factor errors (non-
sinewave)
Crest factor 1-2 0.05% of reading
Crest factor 2-3 0.15% of reading
Crest factor 3-4 0.30% of reading
Crest factor 4-5 0.40% of reading
AC filter bandwidth:
Slow
3 Hz - 300 kHz