User's Manual Chapter 5

Procedure

i) PTT the transmitter.

ii) Set the transmitter modulation frequency to lkHz, at 1V pk-pk injected in the

WB/DC-FM input.

iii) Adjust TX Limiter gain RV2 to obtain to obtain the nominaI deviation. (See

.Table 2 - Nominal Deviation)

The second potentiometer sets the TX VF line input level. The transmitter modulating

audio for this test is connected to the TX VF input. This input is located on the rear of the

MX800, on the Line I/O connector pin 9 of the DB15F connector. (Refer section 5.1.I for

additional help.)

Procedure

i) PTT the transmitter.

ii) Set the transmitter modulation frequency to lkHz, at nominal line input level (-

10dBm is default level) injected in through the TX VF input.

iii) Adjust TX VF gain RV4 to obtain to obtain the nominal deviation. (See Table 2 -

Nominal Deviation.)

The third potentiometer sets the TTR Gain.

Procedure

i) Remove TX PTT.

ii) Enable the repeater. The repeater may be enabled by turning on switch 4, of

DIP2, inside the radio. Alternatively the repeater may be enabled/disabled via the

repeater enable pin 8 of the Line I/O connector. The polarity of the repeater

enable function is dependent on how the internal LIFUISEN jumper is set (JMP9).

iii) Set the receiver modulation frequency to I kHz and the FM deviation to that

specified in Table 2 - Nominal Deviation, for the particular RF receive frequency

of the test channel.

iv) Adjust TTR Deviation RV3 to obtain to obtain the same deviation as input to the

RX. (See Table 2 - Nominal Deviation.)

Note: The test channel must be programmed as a repeater channel so this potentiometer can be

setup. If not then temporarily alter the channel settings using the Channel Edit Screen in

MXTOOLS.