Bird Technologies 61-89A-50 Series-Installation Instructions - Manual (Page 13)

Manual 7-9362-2 Page 7 TX RX Systems Inc. 10/19/05
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 and Mid-Level amplifier cards
have tri-color (green-orange-red) status LEDs visi-
ble 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, Low Gain Module: Green
indicates current or device temperature within the
expected operating range. Orange indicates cur-
rent 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 temperature and
booster operation is likely to be affected. See page
9 for more details about alarm operation.
Attenuator Module: Green only indicating DC
power is applied to the card.
OLC LIGHT BARS
Ideally, there should be little or no light bar activity.
Each light bar segment represents an average 3
dB of OLC gain reduction. OLC (output level con-
trol) is meant to reduce gain for transient episodes
of very strong signals. However, when OLC is
active, gain is reduced for all signals being pro-
cessed by that booster branch and that reduction
may compromise communications for weaker sig-
nals in the booster’s passband.
If more than 2 or 3 light-bar segments are lit up
more than occasionally, it is advised that the gain
of that branch be reduced. See the SET GAIN
paragraph on page 9 for details.
Front Panel Controls & the LCD Display
SB II is software directed so control of the system
is accomplished via user interface with the control
panel using the LCD display screen and the menu
select buttons, see figure 2. A flow chart showing
all of the possible user menu selections is shown in
Figure 7.
LCD Screen
Once the boot-up sequence is completed (after
several seconds) the LCD screen will switch to the
main status display as shown in figure 6. This is the
normal display for the signal booster. The system
WARNING
Figure 6: Normal Operational LCD Display.