RF Multiplexer Switch Modules
Agilent 34941A-34942A RF Multiplexer Modules User’s Guide
1
RF Multiplexer Switch Modules
This User’s Guide covers the following two plug- in modules for the Agilent
34980A Multifunction Switch/Measure Unit:
These modules provide high density radio frequency (RF) signal switching,
with four independent 1x4 multiplexer banks in each module.
Both modules contain four banks of latching switches. Each bank consists
of three Form C relays (see the simplified schematic on
). To create
a larger switching configuration, you can connect the banks in this module
and
connect to banks in
other
RF MUX modules. For example, you can
create up to 1x97 RF MUX in a single 34980A mainframe.
The important differences between the two RF MUX modules lie in their
characteristic impedance and their use of connectors (external cables are
not
provided with the module):
•
The 34941A — the 50-
version — uses SMA connectors.
When installing SMA cables on the 34941A module, it is recommend
that you tighten them to 0.8 - 1.1 Nm (7- 10 in- lbs) of torque.
•
The 34942A — the 75-
variation — uses Mini SMB connectors.
34941A
Quad 1x4 50
3GHz RF multiplexer
34942A
Quad 1x4 75
1.5GHz RF multiplexer
C A U T I O N
SMA connectors are easily damaged, especially when tightening
a neighboring connector with a wrench. To help prevent damage
and contamination, do not remove a connector's protective cap
until immediately prior to installing a cable on that connector.
N O T E
For the 34942A, it is recommended that you use gold-plated
straight plug connectors (75
Miniature SMB). Because of the
space constraints between connectors on this module,
right-angle plugs and SMB adapters are not recommended.