Operating instructions

RF Technology T350/T500 Page 18
6.5 Tone Deviation 6 FIELD ALIGNMENT PROCEDURE
6. Set the audio input to 150Hz, 0dBm
7. Measure deviation and adjust RV4 (line level) for a deviation of 5kHz (2.5kHz for
narrow band transmitters).
8. Set the audio input to 1.5kHz, 0dBm.
9. Adjust RV2 (Mod. Bal.) for a deviation of 5kHz (2.5kHz for narrow band
transmitters)
10. Repeat steps 6-9 until balance is achieved.
11. Key the transmitter off.
12. Return JP7 to its correct setting.
13. Carry out the Deviation (section 6.6) and Tone Deviation (section 6.5) alignment
procedures.
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.
1
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.
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1 The factory default is 500Hz for wide band (5kHz maximum deviation) and 250Hz for narrow band
channels.