R3131 Spectrum Analyzer Operation Manual
2.3.3 Measuring Adjacent Channel Leakage Power (ACP)
Initialization
This resets the current settings to the factory defaults.
4. Press SHIFT and CONFIG (PRESET).
The default settings have now been reset.
Setting the measurement conditions
This changes the analyzer settings so that the input signal is displayed more clearly.
5. Press FREQ, 1, 8, 9, 5, ., 1, 5 and MHz.
A center frequency of 1895.15 MHz is set.
6. Press SPAN, 3 and MHz.
A frequency span of 3 MHz is set.
7. Press BW, RBW AUTO/MNL, 1, 0 and kHz.
The RBW is set to 10 kHz.
Setting the detector mode
8. Press TRACE, Detector and Pofi.
The trace is set to positive detector mode.
Setting up the channel spacing
This activates the ACP mode, and then sets the specified bandwidth and channel spac-
ing.
9. Press POWER MEASURE and ACP.
The ACP mode is set.
10. Press Channel Spacing 1, 6, 0, 0 and kHz.
Channel Spacing (adjacent) is set to 600 kHz.
11. Press Channel Spacing 2 ON/OFF, 9, 0, 0 and kHz.
Channel Spacing (alternate) is set to 900 kHz.
12. Press Channel Band WD, 1, 9, 2 and kHz.
The specified bandwidth is set to 192 kHz.
2-66