Setting the Start Frequency/Channel


The Start Frequency or Start Channel sets the frequency (or channel) from which any scan will start. You can specify either a Start Frequency or a Start Channel, depending on your Units setting. This is described in "Setting the Units of Measure for the Graphical Display"
If your Start Channel mode is set to Chan, you can only view one channel at a time. The Stop Channel key will be disabled, and set to the same value as your Start Channel.
Start Channel and Start Band are independent of each other, so if you switch from Start Channel to Start Band, your previous Start Band and Stop Band settings will be restored.
If the channel you specified using the [Position] menu key can not be demodulated, you will see the message "No valid Slot Sync found" displayed on the graphic portion of the screen for all three views, and the numeric metrics at the bottom of the screen will be dashed out. In the Power versus Time view, the PvT Mask will not be shown even if you have switched it on.
To Set the Start Frequency or Start Channel:

Step
Notes
1
[Start Freq] or [Start Chan]
This choice depends on the [Units] mode you are using.
2
Enter the desired channel or frequency step using the numeric keypad.

3
[Up] or [Dn]
OR
[Hz], [kHz], [MHz], or [GHz]
This choice depends on the [Units] mode you are using. When specifying channel numbers, terminate your selection with [Up] or [Dn] to specify either an Uplink channel or Downlink channel.
When specifying a frequency, terminate your selection with one of the frequency units of measure.
Notice (and verify) that the number you entered appears below the Start Freq or Start Chan text on the corresponding button.