User's Manual

G3L-850-180 MCPA Controls and Indicators
044-05454 Rev A 2-2
Table 2-1 MCPA Controls and Indicators
Controls and Indicators Description
Toggle Switch, Three Position
RESET (Up) Resets
MCPA . LED indicates boot mode (red), then turns solid
green
ON (Center) Enables MCPA. LED indicates solid green
OFF (Down) Disables MCPA. LED Indicates solid red
LED, Status
Green (solid) MCPA normal operation, no alarm
Green (blinking) Standby (disabled from front panel or disable command)
Yellow (solid) Minor Alarm - APC function enabled
Red (solid) Major alarm - no service, MCPA disabled
Table 2-2 MCPA Alarm States
Alarm Definition Alarm type/LED Auto-Recovery
Output
O
verpower
Disables MCPA immediately if
output power is >+2 dB over rated
output RF power.
Major
(Red)
No auto recovery. Requires front
panel manual reset, or by host system
command.
Automatic
Po
wer Control
(APC)
Enabled if output power is > 52.67
dBm.*
Minor
(Yellow)
MCPA auto-recovers when output
power drops below rated maximum
output power.
Input
O
verdrive
Disables MCPA immediately if input
RF drive is >-4.95 dB
Major
(Red)
No auto recovery. Requires front
panel manual reset, or by host system
command.
High
Te
mperature
Disables MCPA if sensor
temperature is > +85° C.
Major
(Red)
MCPA auto-recovers when sensor
temperature drops to less than +75
°C.
High Reverse
Po
wer
Disables MCPA if the reverse RF
output power is higher than 49 dBm
for a duration of 1-minute.
Minor (Yellow)
during 1-
minute
validation
period then
changes to
Major (Red)
No auto-recovery. Requires front
panel manual reset, or by host system
command. Reverse power must be <
48.3 dBm.
Exceed
Ma
ximum
Voltage
Disables MCPA immediately if
supply DC voltage > +30.5 VDC.
Major
(Red)
Auto-recovery when supply voltage
drops to < +29.5 VDC.
Below
Mi
nimum
Voltage
Disables MCPA immediately if
supply DC Voltage < +20.5 VDC
Major
(Red)
Auto-recovery when supply voltage
increases to >+24.0 VDC
Loop Fail
(L
inearization
Alarm)
Disables MCPA if loop convergence
fails.
Major
(Red)
Auto-recovery when loop converges.
MCPA tries to auto recover ten times
before permanent shut down. Two
minutes and 5 seconds for each try.
Internal DC
Fa
il
Alarm if internal voltages fail or out
of range.
Minor
(None)
Auto-recovery once voltage is within
range. No shutdown until linearization
alarm occurs.
Device Fail Alarm if one or more output power
d
evices fail.
Minor
(None)
No auto-recovery. No shutdown until
linearization alarm occurs.
*Note: If MCPA cannot compensate gain to maintain compliance, Output Overpower or Input Overdrive faults protect
M
CPA.