6-9
SECTION 6
OPTIONS
6-7 SINGLE SIDEBAND RECEIVE FILTER (OPTION 08)
6-7-1 GENERAL
Installation of the Single Sideband Receive IF Filter provides the ability to monitor SSB
signals. When Filter is installed, 3 kHz Selection is available for IF Bandwidth Filter.
The Single Sideband and 30 kHz IF Filters are mutually exclusive. Only one additional
IF Filter can be installed.
6-7-2 DESCRIPTION OF RECEIVE FUNCTION
RF Receive Operation is changed as follows:
o Analyzer Center Frequency is offset from center graticule
±1800 Hz, depending on
whether Upper Sideband (UB) or Lower Sideband (LB) is selected as Demodulation
Type.
o No Modulation Meter is provided for Single Sideband. Either Modulation Reading or
Modulation Meter, whichever was last selected, is blanked from the screen.
o RF Error Meter is not provided for Single Sideband. RF Error Meter is blanked from
the screen.
Additions and Redefinitions of parameters on the RF Receiver Operation Screen are as
follows:
1. Demodulation Type
Includes two additional settings: UB (Upper Sideband) and LB (Lower Sideband).
2. IF Bandwidth
Includes additional 3 kHz setting.
3. BFO Frequency
Tone/Data Code Field is renamed when UB or LB is selected as Demodulation
Type (1). Displays selected adjustment for BFO Frequency. Adjustment range is
±4.0 kHz. No Soft Function Keys are defined when BFO Frequency is displayed.
4. AGC Setting
Displays current AGC Setting, AUTO or MANUAL. AUTO provides automatic gain
control while MANUAL sets feedback level for automatic gain control to defined
level. Selection of MANUAL accesses Feedback Level Data Field. Range is 0 to
1023.
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