
322
TOPA-SV-024 Test Unit
TP9100 Service Manual
© Tait Electronics Limited
May 2005
19.2.4
Rx / Tx/PTT Switch
This 2-way toggle switch is used to switch between receive and transmit mode.
■
When set to
Rx
, the PTT line is switched to high impedance.
■
When set to
Tx/PTT
, the PTT line is pulled to ground.
19.2.5
Speaker / Radio / Load Switch
This 3-way toggle switch is used during receive audio tests to switch the audio
to the test unit speaker (
Speaker
), to the radio’s internal speaker (
Radio
) or to
a dummy load consisting of R1 and R2 (
Load
).
Note
This switch does not disconnect the radio’s internal speaker on
mobiles. If the switch is set to
Speaker
or
Load
, this simulates an
external speaker being connected in parallel to the radio’s internal
speaker.
With all settings, a low level audio signal is available for testing through
the SINAD port.
Portable
■
When set to
Speaker
, only the speaker of the test unit is active.
■
When set to
Radio
, only the speaker of the portable is active.
■
When set to
Load
, no speaker is active. The audio signal is terminated in
the test unit dummy load.
Mobile
■
When set to
Speaker
, the speakers of the test unit and the mobile are
both active. The speaker of the mobile cannot be disconnected.
■
When set to
Radio
, only the speaker of the mobile is active.
■
When set to
Load
, the speaker of the mobile remains active.
Содержание TP9100
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Страница 11: ...TP9100 Service Manual 11 Tait Electronics Limited May 2005 TP9100 portables Chapter 1 Description of the Radio ...
Страница 74: ...74 Circuit Descriptions TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 75: ...TP9100 Service Manual 75 Tait Electronics Limited May 2005 TP9100 portables Chapter 2 Servicing the Radio ...
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Страница 100: ...100 General Information TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 126: ...126 Disassembly and Reassembly TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 148: ...148 Interface Fault Finding TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 158: ...158 Power Supply Fault Finding TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 250: ...250 Transmitter Fault Finding TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 268: ...268 Receiver Fault Finding TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 292: ...292 Spare Parts TP9100 Service Manual Tait Electronics Limited May 2005 Figure 13 1 Serviceable parts 3 3 3 4 4 3 4 ...
Страница 294: ...294 Spare Parts TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 295: ...TP9100 Service Manual 295 Tait Electronics Limited May 2005 TP9100 portables Chapter 3 Accessories ...
Страница 298: ...298 Antenna Identification Chart TP9100 Service Manual Tait Electronics Limited May 2005 ...
Страница 306: ...306 TPA CH 001 Single Battery Charger TP9100 Service Manual Tait Electronics Limited May 2005 15 6 5 Circuit Diagram ...