L-TRX/L-19F
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LED PWR/CLK (green):
In case of a power supply failure or missing reference clock the PWR/CLK LED is
deactivated. The L-TRX enters the ERROR state.
LED INACTIVE (yellow):
During normal operation the INACTIVE LED displays the L-TRX Lock signal generation
status. The LED is continuously on when no Lock mode is active or beats with approx. 2 Hz if
the signal generation is suppressed with the SEL_2H/AMP~ input.
In diagnostic mode the LED displays the transmitter (power amplifier) status. If the trans-
mitter is switched off, the LED is active. During pulsed operation the LED beats with approx.
2 Hz. In CW signal generation mode the LED is deactivated.
LED Status Operating Mode LED Status Operating Mode
Power OFF:
The L-TRX is switched
off.
Lock 2H:
Normal operating
mode. Pulsed Lock
signal gener- ated.
Idle:
No 2H stimulus signal,
no RF-signal
generated.
Lock 2H and Mute 2H:
L-TRX in normal Lock
mode with temporary
signal suppression
due to active external
SEL_2H/ AMP~
signal. The LED beats
with approx. 2 Hz.
Error:
Error in L-TRX detected
but neither power
supply failure nor
missing reference
clock.
(e.g. over temperature
in power amplifier)
Diagnostic:
Power amplifier not
active respectively no
output signal
generated.
The ERROR LED
beats with approx. 2
Hz.
Error:
Error in L-TRX power
supply or missing
reference clock.
Diagnostic:
Pulsed output signal
generated. Both
ERROR and
INACTIVE LED beat
with approx. 2 Hz.
Diagnostic:
CW output signal
generated. The
ERROR LED beats
with approx. 2 Hz.
Table11.1: L-TRX Status LED‘s in Different Operating Modes
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