- 9 -
AGC:
When Illuminated, this yellow LED indicates that automatic gain control is active
and has reduced the gain of the unit in order to prevent very strong input
signals from overloading the amplifier. The amplifier will periodically evaluate
input signal and attempt to recover from this condition.
UL PWR:
Indicated by a red LED. Uplink power has been affected by a system event and
will need to be addressed by either the system software or a technician to
be reset to original system settings, using the GUI or text menu interface.
See the event log to determine the nature of the fault.
DL PWR:
Indicated by a red LED. Downlink power has been affected by a system event
or condition, such as insufficient antenna isolation, and will need to be
addressed by either the system software or a technician to be reset to original
system settings, using the GUI or menu driven user interface. See the event log
to determine the nature of the fault.
OSC:
Indicated by a red LED. An oscillation event has occurred or is occurring. The
system has been affected by the event and the problem will need to be
addressed by the system software or a technician to be reset to original system
settings. This is an indication of a major fault.
SHUT DWN:
Indicated by a red LED. The RF stages of the unit are disabled due to an
unresolved system event such as oscillation, effectively taking the unit off the
air. The problem will need to be addressed by a technician before the on air
operation can be restarted. The repeater is not equipped with an ON/OFF
power switch. Hard power down will require that the unit be unplugged.
D/L SIGNAL
STRENGTH:
Indicated by a green LED bargraph. This indicates the relative signal strength
being received from the cell site. Note: the last bar of the bargraph will turn
red in the event of very strong adjacent channel interference.
Approximate Signal Strengths of Bargraph Display
ILLUMINATED
BARS
SIGNAL AT INPUT
CONNECTOR
0
*
1
2
3
10
< -81 dBm
-81dBm to -79dBm
-78dBm to -75dBm
Adjacent Channel
Interference
4
5
6
7
8
9
-74dBm to -71dBm
-70dBm to -67dBm
-66dBm to -63dBm
-62dBm to -59dBm
-58dBm to -55dBm
-54dBm to -51dBm
Alarm:
Indicated by a red LED. The unit has sensed an alarm condition. This LED may
light alone or in conjunction with one of the other indicator LEDs. In both cases the
cause(s) can be reviewed by going to the
System Health
menu.
*
Note: During Power up, the repeater will require a approximately three minutes for
the internal computer to boot up. During this time the LEDs on the front panel will light
and go out several times. When boot is complete and no alarm conditions exist, none
of the LED indicators will be illuminated. The CSI logo is illuminated when ever the
repeater is powered. One or more bars on the LED bargraph may also be lit,
depending on the strength of the signal being received from the donor site. Signals
weaker than -81dBM will not illuminate any bars.
Do not unplug the unit while it is in the boot up process!
The minimum measurable input level is -81 dBm at 85 dB gain, -71 dBm at 75 dB gain,
-61 dBm at 65 dB gain, and -51 dBm at 55 dB gain.
Summary of Contents for CSI-DSP85-201-C/P
Page 1: ...CSI DSP85 C P CSI DSP85I C P CSI DSP85 201 C P Installation Manual...
Page 14: ...15 Functional Block Diagram...
Page 37: ...38 Notes...
Page 38: ...39 Notes...
Page 39: ...960 1041 001 rev F Draft...
