Tait TP9100 - Page 66

66 Circuit Descriptions TP9100 Service Manual
© Tait Electronics Limited May 2005
Radio Modes and
Internal Power
Supplies
Table 3.1 lists the radio modes and shows which power supplies are on and
off during these modes.
The 3V3 SMPS and the 2V5, 1V8 and 1V5 linear regulators are always on.
Table 3.1 Radio modes and internal power supplies
Internal
Power Supply
Radio Mode
Tx RX Audio
a
RX Standby
b
Economy Mode
c
+5V TX on off off off
+5
V AN on on on off/on cycling
+3V AN on on on off/on cycling
+3
V RX offononoff/on cycling
Audio PA off on off off/on cycling
a. Receiving and audio PA on.
b. Receiving and audio PA off.
c. Only if programmed