3-17
SECTION 3
COMPOSITE
3-3-9 DUPLEX SCREEN
The Duplex Operation Screen is used to define and activate the COM-120C RF
Generator and RF Receiver simultaneously at the same frequency or offset frequencies
and is accessed by pressing the DPLX Test Mode Key.
The Duplex Operation Screen displays in the configuration last used.
1. Header Bar
Displays current operation
mode.
2. Duplex Generate Prompt
Accesses Duplex Generate
Operation Screen.
3. Duplex Generate
RF Field
Displays current Duplex
Generate Frequency.
Range is 0.0000 to
1000.0000 MHz.
4. Frequency Offset
Displays frequency
difference between
Duplex Generate RF Field
(3) and Duplex Receive RF Field (20). Range is from -999.7500 to 999.750 MHz.
5. Output Level
Displays Output Level. If T/R Connector is selected for Output (6), range is -130
to -40 dBm, 0 to .002236 V, 0 to 2.2360 mV or 0.07 to 2236.0 µV. If AUX RF
Connector is selected for Output (6), range is -130 to -13 dBm, 0 to 0.050059 V,
0 to 50.0593 mV or 0.07 to 50059.3 µV.
6. Output
Displays Output Connector. Displays T/R, T/R Gate, AUX or AUX Gate. Gated
Output is active only when microphone, attached to MIC/ACC Connector, is keyed.
7. Modulation Source Window
Displays active Modulation Sources. Inactive Modulation Sources are not shown.
If two (or more) sections of the RF Modulator are set in conflict (e.g. GEN1 set for
PM and GEN2 set for FM, or GEN1 set for 0.01 kHz deviation and GEN2 set for
2.60 kHz deviation) the screen displays the invalid source grayed out.
Mod Src : GEN 1
Deviation : 5.0 kHz
Shape : SINE
Freq : 1000.0 Hz
Format : TONE
- 40.0 dBm
T/R
GEN1
0.0000 MHz
DISTORTION:
AF FREQUENCY
T/R
FM
OFF
- - -
FM
RF :
DEVIATION:
DUPLEX
Tone/Data Code: DCS
00607041
Offset :
Level :
Output :
525.0000 MHz
RECEIVE
GENERATE
RECEIVE AND GENERATE
Input :
Demod :
FL :
RF : 525.0000 MHz
IF BW: 15 kHz
Atten: 0 dB
RF Power:
RF Error Freq: 0.001
3.0 %
1000 Hz
5.0 kHz
0.0 mW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
17
18
19
20
21
22
kHz
Duplex Screen
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