Performance Verification
AMT75 Impedance Adapter Instructions
11
Attenuation Accuracy
1. Set up the equipment as follows:
DMM
Setting
Mode
DCV
Range
10 V
Power Supply
Setting
DCV
1.000 V
2. Connect the equipment as shown in Figure 6.
CAUTION.
To avoid damaging the 75
W
input, use only 75
W
connectors and
75
W
cables on the 75
W
input.
+
–
Multimeter
Power supply
+1.0000 V
50
W
termination
50
W
BNC adapter
75
W
BNC cables and 75
W
T adapters
Figure 6: Measuring the power supply output voltage
3. Activate the power supply and adjust the output until the DMM reads
1.000 V.
4. Deactivate the power supply but do not change the output setting.
5. Connect the equipment as shown in Figure 7.