Specifications 2
34980A Service Guide 15
Matrix Modules Specifications and Characteristics
[1]
DC or AC RMS voltage, channel-to-channel or channel-to-earth
[2]
Peak voltage, channel-to-channel or channel-to-earth
[3]
Into analog bus. System errors are included in the internal DMM measurement accuracy specifications.
[4]
With in-rush resistors bypassed. Bypassing resistors reduces lifetime of relays. See the rated load relay life characteristics.
[5]
Limited to 6 W channel resistance power loss per module
[6]
Power restrictions allow only 20 channels to be closed at one time.
[7]
With 100 input protection resistors.
[10]
Channel resistance is typically < 1.5 but can be as high as 50 when a channel is used in measurement applications with < 1 mA
load current. Increased relay channel resistance for measurements with load currents below 1 mA can occur on cards that have been
out of service or following relay inactivity for periods of greater than 1 week. Switching relays for 2k cycles prior to use typically
corrects this problem. Agilent recommends the use of 4-wire ohms for resistance measurements and the Hi-Z input impedance
configuration for voltage measurements. Applies to 34931A, 34932A.
34931A 34932A 34933A 34934A
Channels/configurations dual 4x8
8x8, 4x16
dual 4x16
8x16, 4x32
dual 4x8, 8x8
4x16, quad 4x8,
1-wire
quad 4x32,
4x128,
8x64,16x32
Switch type Armature
latching
Armature
latching
Reed
non-latching
Reed
non-latching
Input characteristics (per
channel)
Max volts ± 300 V
[1]
± 300 V
[1]
± 150 V peak
[2]
± 100 V peak
Max current (DC, AC RMS)
Switch current
Carry current
1 A
2 A
1 A
2 A
0.5 A
[4]
/0.05 A
[7]
1.5 A
[4]
/0.05 A
[7]
0.5 A
0.5 A
Power (W, VA)
[2, 5]
60 W 60 W 10 W
[6]
10 W
Volt-Hertz limit 10
8
10
8
10
8
10
8
Initial closed channel res
[3]
< 1.5 < 1.5 < 1.5
[4]
/200
[7]
< 1 /100
General Specifications
Offset voltage
[3]
< 3 V< 3 V < 50 V
< 100 V 1-wire
< 20 V
< 50 V 1-wire
DC Isolation (ch-ch, ch-earth) >10 G >10 G >10 G 10 G
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