Often, the cables described above are not available, and
single-conductor shielded cable must be used. The shields of these
coaxial cables are susceptible to interference. You can often reduce
this interference, at the risk of introducing ground loop problems, by
grounding the shell of the BNC connectors on the connector panel
and using an unbalanced 50 Ω output configuration.
To do this, connect a short jumper from the banana plug connector
for the low side (which is the same point as the BNC shell) to the
nearby ground connector on the connector panel, as shown in Figure
3-22, and select 50 Ω Unbal on the Generator panel. Note that you
have to do this for both channels if both are used.
The same situation exists for the input to the analyzer: the input to
each channel is balanced, and the BNC connector shell is floating.
You can ground the shell in the manner described above if desired.
Single Conductor shielded cable
BNC Connector
-
GND
Typical BNC Panel (partial)
-
GND
+
Figure 3-22. Alternate cable connections with BNC connector panel
3 Operation
External Connections Operational Overview
3-50 ATS-1 Dual Domain User's Manual
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