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General Dynamics R2670 Series - Page 359

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6. Press the 800 MHz softkey to select the
800 MHz band.
7. Move the cursor to the “CCTx” field and
enter either the control channel transmit
frequency or the channel number.
8. Move the cursor to the “VCTx” field and
enter either the voice channel transmit
frequency or the channel number
9. Set the monitor attenuation and port
selection. Suggested port selection is RF
I/O with 20 dB attenuation.
10. Set the generator attenuation and port
selection. Suggested port selection is RF
I/O with –50 dB for the level setting.
11. Connect the radio under test to the RF I/O
port as shown in Figure 24-8.
12. Press the AUD Cursor Zone hardkey to
move the Audio zone.
13. Set the PROJ 25 deviation. The default
and suggested deviation is 2.83 kHz.
14. Move the cursor to the “external” field.
Set the deviation. Press the TAB key to
move to the switch selection. Press the
CONT softkey to turn on the external
port (microphone).
15. Press the DISP Cursor Zone hardkey to
move to the Display Zone.
16. Move the cursor to the “Meter” field and
press the start test softkey to begin the
test.
17. Observe the user prompts displayed
above the row of softkeys. Turn radio on
as directed by the prompt. Perform
actions specified by user prompts
throughout the remainder of the test.
18. Follow the call sequence by looking at the
sequence thermometer in the middle of the
screen.
The status below the sequence thermometer
gives a textual description of the Call State.
For a description of all call states, refer to
Appendix M.
Upon completion of the test, the sequence
thermometer will reach 11. Press the stop test
softkey to complete the test (state 12). The
bottom portion of the Display Zone will
exhibit those parameters received from the
radio.
25-4.3 BASE
Connect a 10dB pad to the RF I/O port and
connect the unit under test to the 10dB pad.
1. Place the cursor on the “Mode” field in the
Display Zone located at the top of the
screen. Use the PROJ25 TRK softkey to
select the mode.
2. Move the cursor to the “Meter” field by
pressing the TAB key. Select the more
softkey and the BASE softkey to select the
BASE TEST.
The RF Zone display will switch to the
Duplex format, displaying “Mon Freq:” and
“Offset:” fields.
4. Press the RF Cursor Zone hardkey to move
to the RF zone.
5. Move the cursor to the “Mon Freq:” field
and enter the frequency to be monitored by
the analyzer.
6. Move the cursor to the “Offset:” field and
enter the desired duplex offset for the
analyzer’s transmit frequency.
7. Set the monitor attenuation and port
selection. Suggested port selection is RF
I/O with 20dB attenuation.
313

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