Chapter 8 175
Hardware Options
Verifying Option 122 or 140, Wide Bandwidth Digitizer
Setting up the instrument in wideband mode:
The wideband IF is only accessible in the Basic instrument mode.
1. Press
Mode, Basic
2. Press Meas Setup, IF Path, Wide. This selects the wideband IF path
through A31 Wideband Analog IF and the A32 Wideband Digital IF
assemblies.
3. Press
Input/Output, Input Port, Amptd Ref.
4. Set
Center Frequency to 50 MHz.
The internal 50 MHz, −25 dBm calibrator tone should be displayed. The
noise floor will be less than −70 dBc. See Figure 8-4.
Figure 8-4 Noise Floor
If you do not see a signal, or the signal is not the correct amplitude, or
the noise floor is incorrect, check the performance in the standard
narrow band mode.
NOTE Option 122 example shown. The Option 140 span is limited to 40 MHz.
To Next Page
Loading...
Need help?
General
