Performance Verification
10
AMT75 Impedance Adapter Instructions
Input Impedance
1. Connect the AMT75 adapter as shown in Figure 5.
CAUTION.
To avoid damaging the 75
W
input, use only 75
W
connectors and
75
W
cables on the 75
W
input.
75.000
W
Multimeter
75
W
BNC cables
and 75
W
T adapter
50
W
BNC adapter
50
W
termination
Figure 5: Test setup for input impedance
2. Check that the DMM reads 75
W
$
1.5% (73.875 to 76.125).
3. Disconnect setup.