Channel Scanner (Option 27) 4-4 Custom Setup Measurements
Spectrum Analyzer MG PN: 10580-00349 Rev. H 4-3
4-4 Custom Setup Measurements
Procedure
1. Press the Custom Scan main menu key.
2. Press the Number of Channels submenu key to define how many channels to include in
the custom list. This choice can be changed later if needed.
3. Press the Edit List submenu key to bring up the list of channels. The channel highlighted
in blue is the channel active for editing. Use the up or down arrows to select the
channel to edit. Each channel can be set up differently.
4. Press either the Select Signal Standard submenu key or the Set Freq submenu key. If the
Select Signal Standard submenu key was pressed, select the desired air interface
standard from the dialog box. When a standard is selected, the usual bandwidth for
that standard is automatically set. The bandwidth can be changed if desired.
5. Press the Set Channel submenu key to enter the desired channel number. If the Set Freq
submenu key was pressed, the frequency value of the active channel will be
highlighted. Use the rotary knob or the numeric key pad to enter the desired center
frequency in Hz, kHz, MHz, or GHz.
6. Press the Set Bandwidth submenu key and use the rotary knob or numeric keypad to
enter the desired value in Hz, kHz, MHz, or GHz.
7. Press the Done Editing submenu key.
8. Repeat steps 3 through 7 to continue editing additional channels.
4-5 Custom Setup Example
This example explains how to monitor several signals, plus a potential intermodulation
product, to see if there is a correlation between the nearby signals and an intermittent
interference problem.
The signals on or near the rooftop are:
• An FM broadcast station at 106.5 MHz
• A paging transmitter at 157.86 MHz
• Three cellular sites:
• US CDMA PCS channel 50 (1932.5 MHz)
• LTE Band 13 DL channel 5230 (751 MHz)
• GSM 1800 channel 512 (1805.2 MHz)
• A Ham repeater at 147.36 MHz
• A Ham repeater at 446.5 MHz
• A land mobile repeater at 451.7875 MHz
• A public safety repeater at 485.5625 MHz
• In addition, the site is near the flight path of an airport. The approach frequency is
121.4 MHz.
Set up a measurement channel for each of the signals to be observed plus extra channels for
any intermodulation products to be observed.
ООО "Техэнком" Контрольно-измерительные приборы и оборудование www.tehencom.com
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