Matrix Modules Specifications And Characteristics - Agilent Technologies 34980A Service Manual

Matrix Modules Specifications and Characteristics

Channels/configurations
Switch type

Input characteristics (per
channel)
Max volts
Max current (DC, AC RMS)
Switch current
Carry current
[2, 5]
Power (W, VA)
Volt-Hertz limit
Initial closed channel res

General Specifications
[3]
Offset voltage
DC Isolation (ch-ch, ch-earth)
[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.
34980A Service Guide
34931A
dual 4x8 
8x8, 4x16
Armature
latching
[1]
± 300 V

1 A
2 A
60 W
8
10
[3]
< 1.5 
< 3 V
>10 G
34932A 34933A
dual 4x16 dual 4x8, 8x8
8x16, 4x32 4x16, quad 4x8,
1-wire
Reed 
Armature
latching non-latching
[1]
± 300 V ± 150 V peak
 
[4]
1 A 0.5 A
[4]
2 A 1.5 A
[6]
60 W 10 W
8 8
10 10
< 1.5  < 1.5 
< 3 V < 50 V
< 100 V 1-wire
>10 G >10 G
Specifications
34934A
quad 4x32,
4x128,
8x64,16x32
Reed 
non-latching
[2]
± 100 V peak

[7]
/0.05 A 0.5 A
[7]
/0.05 A 0.5 A
10 W
8
10
[4] [7]
/200  < 1  /100 
< 20 V
< 50 V 1-wire
10 G
2
15