User`s guide

2-11
Making Mixer Measurements (Option 089 Only)
Measurement Considerations
The following steps can be performed to observe this offset in power:
1. To set the power range to manual, press:
NOTE Since the default source output power of the 8722ES is below 0 dBm, no
reduction in source output power is required for this procedure.
Setting the power range to manual prevents the internal source attenuator from
switching when changing power levels. If you choose a different power range, the R
channel offset compensation and R channel measurement changes by the amount of the
attenuator setting.
2. For this example, set the power level to −10 dBm by pressing .
3. Connect the analyzer source output, port 1, directly to the R channel input as shown in
Figure 2-9.
CAUTION To prevent connector damage on the 8719ES, use an adapter (part number
1250-1462) as a connector saver for R CHANNEL IN.
Figure 2-9 R Channel External Connection
4. To activate the frequency offset mode, press:
Since the LO (offset) frequency is still set to the default value of 0 Hz, the analyzer will
operate normally.
Power
PWR RANGE MAN
0 x1
Power −10 x1
System
INSTRUMENT MODE
FREQ OFFS MENU
FREQ OFFS ON