RELM Communications Inc RPU499A Manuel D’Utilisation
28
Adjusting CDCSS Deviation (Narrowband)
Use this procedure to adjust the transmit CDCSS deviation (Narrowband).
1. Connect the modulation analyzer to the radio.
2. Turn Channel Selector knob to select the setting option “CDCSS N”.
3. Transmission is performed automatically at Low Power and the preset CDCSS is sent when the [PTT] key is pressed.
Use this procedure to adjust the transmit CDCSS deviation (Narrowband).
1. Connect the modulation analyzer to the radio.
2. Turn Channel Selector knob to select the setting option “CDCSS N”.
3. Transmission is performed automatically at Low Power and the preset CDCSS is sent when the [PTT] key is pressed.
After the frequency display for one second, the display “CDCN XXX” now appears (XXX=1 to 255). If the CDCSS is
set OFF, then 023 is sent.
set OFF, then 023 is sent.
4. While observing the modulation analyzer, adjust the deviation with the
Channel Selector knob
.
5. Press [
□
] key to store the alignment value into the memory and return to the “SQL CEN” display. Press [
■
] key to
cancel the alignment value and return to the “CDCSS N” display.
Adjusting the BUSY Reference Value (Center Frequency)
Use this procedure to align squelch level 3 and 9 at center frequency.
1. Connect the signal generator to the radio.
2. Turn Channel Selector knob to select the setting option “SQL CEN”.
3. Input a signal at the level at which you want squelch 9 to open.
4. Press [
□
] key to receive this signal. After the center frequency is displayed for one second, the display “SQL9 XXX”
now appears. (XXX =1 to 255)
5. Turn Channel Selector knob to the position where you want the squelch to open. Rotate Channel Selector knob
clockwise, the squelch is tightened.
6. Press and hold [LAMP] button to observe the center frequency and adjust the frequency by Channel Selector knob.
7. Press [
■
] key to cancel the setting and return to the “SQL CEN” display. Press [
□
] key to save the alignment value
into the memory and continue to the alignment of squelch 3, and now “SQL3 XXX” displays. (XXX=1 to 255)
8. Then output a signal from the signal generator at which you want squelch 3 to open. Adjust by using the Channel
Selector knob just same as with squelch 9.
9. Press [
□
] key to store the alignment value into the memory and return to the “SQL LOW” display. Press [
■
] key to
cancel the alignment value and return to the “SQL CEN” display.
Adjusting the BUSY Reference Value (Low Frequency)
Use this procedure to align squelch level 3 and 9 at low frequency.
1. Connect the signal generator to the radio.
2. Turn Channel Selector knob to select the setting option “SQL LOW”.
3. Input a signal at the level at which you want squelch 9 to open.
4. Press [
□
] key to receive this signal. After the low frequency is displayed for one second, the display “SQL9 XXX”
now appears. (XXX =1 to 255)
5. Turn Channel Selector knob to the position where you want the squelch to open. Rotate Channel Selector knob
clockwise, the squelch is tightened.
6. Press and hold [LAMP] button to observe the low frequency and adjust the frequency by Channel Selector knob.
7. Press [
■
] key to cancel the setting and return to the “SQL LOW” display. Press [
□
] key to save the alignment value