32 34980A Service Guide
2 Specifications
Data Out of Memory to LAN, USB, or GPIB
Data transfer rate with 1000 channel blocks.
[1] LAN large block throughput rate is increased by approximately 30% using LAN sockets.
Internal DMM Measurement Characteristics
GPIB
rdgs/sec
USB 2.0
rdgs/sec
LAN (w/VXI
11)
[1]
rdgs/sec
Readings 2560 2400 3542
Readings with Timestamp 1304 1230 1826
Readings with all Format Options
ON
980 926 1361
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 or > 10,000 M
10 M ±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
Medium
Fast
3 Hz – 300 kHz
20 Hz – 300 kHz
200 Hz – 300 kHz
Input impedance 1 M ±2% in parallel with 150 pF
Input protection 300 Vrms all ranges
Resistance
Measurement method Selectable 4-wire or 2-wire ohms
Current source Referenced to LO input
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