34938A Datasheet, PDF (14/35 Pages) Keysight Technologies – Multifunction Switch/Measure Unit

14 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
Table 4. Matrix selection table—speciications and characteristics
Channels/conigurations
34931A
dual 4x8
8x8
4x16
Switch type
Input characteristics (per channel)
Max volts
Max current (DC, AC RMS)
Switch current
Carry current
Power (W, VA) ^{[2, 6]}
Volt-Hertz limit
Initial closed channel res ^[3][9]
Armature
latching
± 300 V ^[1]
1A
2A
60 W
10⁸
< 1.5 Ω
General Speciications
Offset voltage ^[3]
< 3 uV
DC Isolation (ch-ch, ch-earth)
AC characteristics
Bandwidth at terminal block ^[4]
> 10G Ω
30 MHz
Crosstalk at terminal block (ch-ch) ^[4]
300 kHz
1 MHz
20 MHz
Capacitance at terminal block
HI-LO
LO – earth
General characteristics
Relay life, typical
No load
10 V, 100 mA
Rated load
Open/close time
Analog bus backplane connection
–65 dB
–55 dB
–30 dB
50 pF
80 pF
100 M
10 M
100 k
4 ms/4 ms
Bank 2
34932A
dual 4x16
8x16
4x32
Armature
latching
± 300 V ^[1]
1A
2A
60 W
10⁸
< 1.5 Ω
< 3 uV
> 10G Ω
30 MHz
–65 dB
–55 dB
–30 dB
50 pF
80 pF
34933A
dual 4x8
8x8
4x16
quad 4x8, 1-wire
Reed
non-latching
34934A
quad 4x32
4x128
8x64
16x32
Reed
non-latching
± 150 V peak ^[2]
± 100 V peak
0.5 A ^[5]/0.05 A ^[8]
1.5 A ^[5]/0.05 A ^[8]
10 W ^[7]
10⁸
< 1.5 Ω ^[5]/200 Ω ^[8]
nominal
0.5 A
0.5 A
10 W
10⁸
< 1Ω/100 Ω
< 50 uV
< 100 uV 1-wire
> 10G Ω
< 20 uV
< 50 uV 1-wire
10G Ω
30 MHz ^[5]/4 MHz ^[8] 35 MHz 2-wire
2 MHz 1-wire
15 MHz 1-wire
–65 dB
–55 dB
–40 dB
–65 dB
–55 dB
–33 dB
80 pF
75 pF
45 pF
250 pF
100 M
10 M
100 k
4 ms/4 ms
Bank 2
1000 M
10 M
10 k
0.5 ms/0.5 ms
Bank 2
1000 M operations
0.35 ms/0.10 ms
No
[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] 50 Ω source, 50 Ω load, differential measurements verified (Sdd21)
[5] With input resistors bypassed. Bypassing resistors will reduce lifetime of relays. See the rated load relay life characteristics.
[6] Limited to 6 W channel resistance power loss per module
[7] Power restrictions allow only 20 channels to be closed at one time
[8] Protection Resistors:
34933A - 100Ω ±5%; 0.5W; TC = ±200ppm/°C.
34934A - 100Ω ±1%; 0.25W; TC = ±100ppm/°C.
If this resistance is not bypassed in the low side source line of a 4-wire resistance measurement, the 100 Ω range is limited.
[9] Channel resistance is typically < 1.5 Ω but can go as high as 50 Ω when a channel is used in measurement applications with < 10 mA
load current. Increased relay channel resistance for measurements with load currents below 10 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 may reduce
the variation in channel resistance. Applies to the 34931A and 34932A. Keysight recommends the use of 4-wire Ohms for resistance
measurements. For high accuracy voltage measurements, select the DMM input resistance setting of > 10 G ohms to minimize the
impact of relay contact resistance.