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228 Chapter 7
C:\Spk\Ref\RefGuideRevE\Cnfgscrn.fm
Configuration - Screens and Control Fields
Control Fields on the Configuration Screens
Base Freq (User Defined)
The base frequency field sets the RF generator reference for channel 0
(zero) when the RF Chan Std field is set to USER-DEF, and the RF
Display field is set to Chan.
Channel frequencies are calculated using the following formula:
Channel N = Base Frequency + (N)(Channel Spacing)
The Base Frequency is calculated using the following formula:
Base Frequency = Channel 1 Frequency − Channel Spacing
For example, if your multi-channel radio’s lowest receive channel
frequency is 870.030 MHz and the system channel spacing is 30 kHz,
you would enter 870 MHz in this field. You would also use the Chan
Space and (Gen)-(Anl) fields to tell the Test Set where other transmit
and receive channel frequencies are in relation to the base frequency,
and whether or not the system is duplex.
For more information see the following related topics:
“Chan Space (User Defined)” on page 229
“(Gen)-(Anl)” on page 235
“RF Chan Std” on page 244
“RF Display” on page 245
Operating Considerations
The value of this field is only used if the RF Display field is set to Chan,
and the RF Chan Std field is set to USER-DEF.
Screen(s) Where Field is Present
INSTRUMENT CONFIGURE
Beeper
This field changes the audio beeper volume by selecting the desired
level from a list of choices (Off, Quiet, Loud). The beeper always beeps
when the instrument is turned on, regardless of this setting.
Operating Considerations
The beeper alerts you any time a message is displayed. Since a message
may be removed from the screen before you notice it, it is better to leave
the beeper on to alert you to errors during operation.
The beeper’s volume setting is retained when the instrument is turned
off.