Manual 7-9415-1.4 Page 13
TX RX Systems Inc. 08/31/06
61-65-50 UserMan page 13 of 24
NORMAL OPERATION
Power is applied to the signal booster by turning on
the AC power switch located on the junction box
inside the cabinet, refer to figure 2. The following
startup sequence occurs.
1) At turn-on, the four status LEDs on the front
panel glow red for about 5 seconds as the result
of entering a self-check mode.
2) The two green OLC light bars will be fully lit
along their length for approximately 5 seconds.
3) The LCD display shows the firmware revision
screen for about 5 seconds (see
Figure 5
).
4) After the self check is complete, the four status
lights should turn green and the light bars
should be dark unless a signal is activating OLC
action in either the uplink or downlink.
If the OLC light-bar segments on both the Uplink
and Downlink display light-up and pulse on and off
every 1 to 3 seconds simultaneously,
SHUT OFF
THE POWER IMMEDIATELY!
The booster may be
oscillating. Disconnect the uplink and downlink
antenna connections and measure the isolation
between the two branches to insure there is suffi-
cient isolation. Reset the booster gain as needed.
5) The LCD display should appear similar to
Fig-
ure 6
after the self check is complete.
LED Status indicators
The SB II front panel has 4 status LEDs that glow
green or red to indicate the general health of 4 sub-
systems from a DC perspective. Additionally, the
plug-in, Low-Level, Mid-Level, and Half-Gain Low-
Level amplifier cards have tri-color (green-orange-
red) status LEDs visible when the cabinet door is
open.
FRONT PANEL LEDS:
24V
: Green indicates the 24 volt DC Power system
is operating properly.
12V
: Green indicates the 12 volt DC power system
is operating properly.
UL PA
:
Green indicates that the uplink power
amplifier is drawing current within the expected
operating range and at a safe temperature.
DL PA
: Green indicates that the downlink power
amplifier is drawing current within the expected
operating range and at a safe temperature.
Module LEDS;
Mid-Level, Low-Level, Half-Gain Low Level
Module
: Green indicates current or device temper-
ature within the expected operating range. Orange
indicates current or temperature slightly out of the
expected range but the overall booster operation
may still appear normal. Red indicates a large
departure from normal current or device tempera-
ture and booster operation is likely to be affected.
See page 17 for more details about alarm opera-
tion.
WARNING
Figure 6:
Normal Operational LCD Display.
Figure 5:
Software version is displayed briefly
during the boot-up sequence.
