ADC Dual Inline Tower Mounted Amplifier System Manual Do Utilizador
ADCP-75-214 • Issue 2 • September 2006
Page 16
© 2006, ADC Telecommunications, Inc.
© 2006, ADC Telecommunications, Inc.
4.4
Troubleshooting Matrix
If directed in
to consult a troubleshooting matrix, see
below.
Note: ClearGain PDU DIP switches must be in the down position for each active MHU!
Note: ClearGain PDU input voltage must be in the range –56 to –20 VDC or +20 to +56 VDC.
Table 1. Troubleshooting Matrix
PARAMETER
SPECIFICATION
EXPLANATION
GREEN/YELLOW
OK LED
OK LED
RED GENERAL
ALARM LED
ALARM LED
Electronic Load
Each Path OFF
< 180 mA
Fail
OFF
ON
Each Path ON
180 – 220 mA
OK
GREEN
OFF
Total Fail
370 – 400 mA
Fail
OFF
ON
Short Circuit
Protection
Protection
1.5 A ± 10%
Fail
GREEN
ON
Short state of MHU path does not affect other path. After generating Green alarm,
the short state is held for ten seconds then Red alarm is generated by the PDU.
the short state is held for ten seconds then Red alarm is generated by the PDU.
Circuit Fluctuation Min 180 mA
Max 380 mA
One path failed.
YELLOW
ON
Input Voltage
–56 to –20 VDC /
+20 to +56 VDC
+20 to +56 VDC
OK
GREEN
OFF
Output Voltage
15 V, 4%
Total failure.
OFF
ON