
HP 34903A
20-Channel Actuator/ General
Purpose Switch
• SPDT (Form C) latching relays
• 300 V, 1 A actuation and control
This general-purpose switch
module has 20 independent singlepole, double-throw (SPDT) relays.
Use it to cycle power to products
under test, control indicator and
status lights, and to actuate external
power relays and solenoids.
Combine it with matrix and
multiplexer modules to build
custom switch systems. Its 300V,
1A contacts can handle up to 50W,
enough for many power line
switching applications.
HP 34904A
4x8 Two-wire Matrix Switch
• 32 two-wire crosspoints
• 300V, 1A switching
The HP 34904A gives you the most
flexible connection path between
your device under test and your test
equipment, allowing different
instruments to be connected to
multiple points on your DUT at the
same time.
Rows or columns may be
connected between multiple
modules to build 8x8, 4x16 or larger
matrices, with up to 96 crosspoints
in a single frame.
01
20
NC
COM
NO
NC
COM
NO
Row 1
Row 2
Row 3
Row 4
Channel 31
(Row 3, Column 1)
Col 1
H L
Col 2
H L
Col 8
H L
H
L
H
L
H
L
H
L
H
H
L
L
HP 34970A Data Acquisition/Switch Unit