Modulation Balance Attenuation; Table 5-2. Reference Oscillator Specifications - Motorola PR400 Basic Service Manual

5-4
1. Under Tx Align menu, select Reference Oscillator Warp
2. There is only 1 frequency point shown which is always the last non-0 transmit frequency point,
which will normally be F7.
3. Click on the slider thumb and press PTT Toggle to key up the radio at the corresponding fre-
quency point.
4. Monitor the transmit frequency.
5. Adjust the slider, spin or edit control (press ENTER to confirm selection/send a softpot value) until
the frequency is as close as possible to the indicated transmit frequency. (Refer to
6. Dekey the radio by pressing PTT Toggle.
7. Program the warp value into the radio by pressing the Program button.
8. Exit the Reference Oscillator Warp function.
5.4.2

Modulation Balance Attenuation

Note: When using test box RLN4460:
July, 2004

Table 5-2. Reference Oscillator Specifications

RF Band
VHF Band 1 (136-162 MHz)
VHF Band 2 (146-174 MHz)
UHF Band 1 (403-440 MHz)
UHF Band 2 (438-470 MHz)
UHF Band 3 (465-495 MHz)
• Inject the signal into the radio via the METER IN terminal and
• Set the METER IN selector switch to "VOL".
• Inject the signal into the radio via the AUDIO IN terminal.
• Set the METER OUT toggle switch to the "MIC PORT" position
• Set the METER OUT selector switch to "MIC".
Radio Alignment Procedures: Transmitter Alignment Options
(Figure
Target
±174 Hz
±436 Hz
±470 Hz
±495 Hz
5-3).
Table 5-2).
6881096C24-A