Internal Dmm Measurement Characteristics - Agilent Technologies 34980A Service Manual

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

DC voltage
Measurement method
A-D linearity
Input resistance
100 mV, 1 V, 10 V ranges
100 V, 300 V ranges
Input bias current
Input Protection

True RMS AC voltage
Measurement method
Crest factor
Additional crest factor errors
(non-sinewave)
AC Filter Bandwidth
Slow
Medium
Fast
Input impedance
Input protection

Resistance
Measurement method
Current source
32
Readings
Readings with Timestamp
Readings with all Format Options
ON
GPIB USB 2.0
rdgs/sec rdgs/sec
2560 2400
1304 1230
980 926
Continuously integrating multi-slope III A-D
converter
0.0002% of reading + 0.0001% of range on 10 V
range

Selectable 10 M or > 10,000 M
10 M ±1%
< 50 pA at 25 °C
300 V all ranges
AC coupled True RMS - measures the AC
component of the input with up to 300 VDC of bias
on any range
Maximum of 5:1 at full scale
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

3 Hz – 300 kHz
20 Hz – 300 kHz
200 Hz – 300 kHz
1 M ±2% in parallel with 150 pF
300 Vrms all ranges
Selectable 4-wire or 2-wire ohms
Referenced to LO input
LAN (w/VXI
[1]
11)
rdgs/sec
3542
1826
1361
34980A Service Guide