Sailor RE2100, Technical Manual

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3 SERVICE RE2100
6. Connect the diode probe across the neon lamp at the input of the front end unit.
7. Adjust the signal generator level V
G
until the diode probe voltage is equal to the value measured
in point 5.
8. Calculate the difference between the signal generator level used in point 3 and the level found in
point 7.
9. The available power gain of the front end unit can now be calculated by means of the equation
G
front
= 12 dB -
D
V
G
where
D
V
G
is the difference in generator level found in point 8. The gain should be -2 dB +/- 2 dB.
10.
3.6.2.3 CHECK OF MUTE AND RX/TX SWITCH
The mute relay RE01-2 is used for external mute functions and for protection of the Front End Unit, when
the RE2100 is switched off. The mute function is checked by toggling the relay RE01, which is done by
means of the service programme SP-04-6.
The RX/TX relay RE02-2 is used for switching between receiver and transmitter mode. The RX/TX relay
is normally in the non-activated state, which corresponds to RX-mode. To obtain the TX-mode, the relay
must be activated. This can only be done by means of a service programme, when the RE2100 is
disconnceted from the transmitter T2130.
1. To check the mute relay, connect the signal generator to the aerial socket at the Front End Unit.
2. Choose the generator frequency f
G
= 1991 kHz and the generator level, V
G
= 70 dB/uV.
3. Select the service programme SP-04-6 and control the number of lighted LED’s in the signal
strength meter to change between about five and eight with a time interval of about 2 secs.
NOTE! Make sure that the signal strength meter is correctly adjusted.
4. To check the RX/TX relay connect a handset to the RE2100 for keying the exciter. If a testbox is
available, this can be used instead.
5. Connect the voltmeter through diode probe to the aerial socket at the front end unit.
6. Select the service programme SP-05-0 and key the exciter.
7. Control the DC-voltage measured through the diode probe at the aerial socket to be 6V +/-1V.
8. To leave service programme mode press <TUNE>.
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