HP 70427A User Manual page 60

Step 4 - Adjust the detector input level if necessary
1. Press the
2. Enter an attenuation up to 35 dB in 5 dB steps with the numeric keypad.
3. Press the
Figure 2-16 Detector Input Level Display Diagram
Enough attenuation should be used to keep the detector's input below +20
dBm. The optimum range is +10 to +15 dBm.
To Automatically Adjust the Input Attenuation
Another way to adjust the input attenuation is to trigger a one-time
auto-ranging. To do this press the
To Demodulate AM: RF AM Detector
softkey.
INPUT ATTEN
softkey to complete the entry.
dB
AUTO ATTEN
HP 70427A/HP 70428A User's Guide 2-15
Getting Started
softkey.