BA_MA_STTV125M_EN_V1.2
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Universal isolating amplifier TV125M / ST125M
5.4 Error and system messages
Error
Cause
Remedy
Status-LED not illuminated
Plug-in terminal strip of the
auxiliary voltage input not
plugged in.
Check the plug-in terminal strip
for firm seating
Electronics defective.
Failure of the unit,
please return to manufacturer!
Red LED blink
Auxiliary voltage < 18 V.
Test auxiliary voltage at
Terminal 11 and 12
Electronics defective.
Failure of the unit,
please return to manufacturer!
Red and green LEDs blink
alternatingly
2 x green, 1 x red
Under-modulation input
< -0,3 mA / -0,15 V resp.
< 3,7 mA / 1,85 V
Check the plug-in terminal strip
for firm seating.
Check for open circuit.
Check auxiliary voltage.
Check signals source.
Adjust start value.
2 x green, 2 x red
Over-modulation input
> 20,8 mA resp.
> 10,4 V
Check for short circuit.
Check signals source.
Adjust end value.
3 x green, 1 x red
Under-modulation output
< -0,2 mA / -0,1 V resp.
< 3,8 mA / 1,9 V
Check the plug-in terminal strip
for firm seating.
Check for open circuit.
Check auxiliary voltage.
Check signals source.
Adjust start value.
3 x green, 2 x red
Over-modulation output
> 20,5 mA resp.
> 10,25 V
Check for short circuit.
Check signals source.
Adjust end value.
Table 11 Error and system messages
