Performance Verification
12
AMT75 Impedance Adapter Instructions
+
–
Multimeter
+0.2000 V
50
termination and cable
Power supply
50
BNC adapter
75
BNC cables and 75
T adapter
Figure 7: Measuring the attenuation accuracy
6. Change the DMM range as follows:
DMM
Setting
Range
1 V
7. Activate the power supply.
8. Check that the voltage is attenuated by 5X
$
1.5% (the DMM reads 0.197
to 0.203).
9. Deactivate the power supply and disconnect the test setup.