06 | Keysight | PXI Matrix Switch Modules M9120A, M9121A, M9122A - Data Sheet
Specifications and Characteristics (continued)
M9121A 4x64, 2-wire PXI high-density
matrix switch
M9121A specifications and characteristics
General specifications
The M9121A ultra-high-density 4x64, full-crosspoint
switch matrix, offers high-speed reed relay signal
switching in a single PXI module. The crosspoints of the
high-speed, 2-wire, long-life reed switches can be rapidy
activated to route signals in your test system. The matrix
relays support signal switching up to 100 Vrms with 10 W
maximum power. The module includes a 4-wire-wide bus
to route signals between test instruments and your device
under test. To create larger matrices, multiple modules
can be linked together. For example, four rows of two
M9121A modules can be joined to create a 4x128 matrix.
Easily connect to the matrix with a high-density, 200-pin
low force helix (LFH) connector or cable.
Channels
4x64
Switch type
Ultra-high-density, 2-wire
reed
Max volts1
100 Vrms
Max switch rating/carry rating 0.5 A
Switching characteristics (nominal)
Max power
10 W
Switch speed (typical)
< 1 ms
Inital path resistance,
differential (typical)
900 mΩ
Connectors
200 LFH
connector block or cable
Bandwidth
10 MHz
DC isolation, Ch-Ch,
Ch-Gnd, typical per channel
25C / 40%RH
25C / 80%RH
40C / 80%RH
1x1010 Ω
1x107 Ω
1x106 Ω
Thermal offset, differential
6 μV
(typical)
Relay life, operations2
Low power load (< 10 V)
load (typical)
1x109
1x106
Up to 100 V (typical)
Figure 4. M9121A 4x64, 2-wire, reed relays
1. Not for connection to mains
2. Relay life is defined as path resistance <1.4 Ω
Figure 5. 200-pin LFH connector block
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