RF Technology R150 Betriebsanleitung PDF herunterladen (Seite 19)

RF Technology T70/T150 Page 19

6 FIELD ALIGNMENT PROCEDURE 6.6 Deviation

6.5 Tone Deviation

1. Remove the audio input.

2. Key the transmitter on.

3. Adjust RV3 for the desired deviation in the range 0-1kHz.

If sub-tone

(CTCSS) coding is not to be used, adjust RV3 fully CCW.

6.6 Deviation

1. Set RV4 (Line Level) fully clockwise (CW).

2. Set the audio to 1kHz, 0dBm, on the line input.

3. Key the transmitter on..

4. Adjust RV1 (Set Max. Deviation) for a deviation of 5kHz (2.5kHz for narrow

band transmitters).

5. Key the transmitter off.

6. Carry out the Line Input Level alignment procedure (section 6.7)

6.7 Line Input Level

1. Set the audio to 1kHz, 0dBm, on the line input, or use the actual signal to be

transmitted.

2. Key the transmitter on.

3. Adjust RV4 (line level) for 60% of system deviation 3kHz (or 1.5kHz for

narrow band systems).

4. If the test signal is varying, RV4 may be adjusted to produce a level of 234mV

RMS or 660mV

p-p

at the audio voltage test connector pin 6 to pin 1.

5. Key the transmitter off.

6.8 Output Power

1. No audio input is required

2. Key the transmitter on.

__________________

1.The factory default is 500Hz for wide band (5kHz maximum deviation) and 250Hz for narrow band

channels.

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RF Technology R150 Betriebsanleitung Seite 19