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ATLANTIC SATELLITE CORPORATION
MODEL ASC300LW
BEACON RECEIVER
5
Once the unit has been tuned to the proper input frequency and the unit
indicates that it has locked to that desired carrier then the signal strength
the attenuation can be adjusted to achieve the desired operating signal
strength voltage.
UP:
The
UP
button increases the value of the attenuation of the unit. The
maximum attenuation setting is 60 dB and is adjustable on 0.5 dB
increments.
DOWN:
The
DOWN
button decreases the value of the attenuation of the unit. The
minimum attenuation setting is 0 dB and is adjustable on 0.5 dB
increments.
Using the above procedure, and when the unit is locked to the desired
carrier, adjust the gain such that the front panel signal strength indication
di7.50 VDC. The unit tracks the input signal strength over a 20 dB
range (0.5 V/dB). For a signal strength reading of +7.5 VDC, the unit will
track upwards to +10.00 VDC or a +5 dB increase in input signal strength
and downwards to 0.00 VDC or a –15 dB decrease in signal strength. The
signal strength is not only displayed on the front panel but is also available
for interfacing to external devices by utilizing the rear mounted terminal
plug.
3.2 Display
The front panel display is a 2 x 20 VFD (vacuum fluorescent display). The
display provides operating as well as alarm indication.
F
:
930.00 to 2300.00 MHz on 10 kHz increments
ATTEN
:
0 to 60 dB on 0.5 dB steps.
REM:
Displayed in the lower left corner when the unit is in the
REMOTE
mode of operation.
ALM:
Continuously displayed if the unit is not locked to the carrier. The
green
LOCK
front panel LED will not be lighted.
SS:
The signal strength voltage is displayed in volts DC. The range that
is displayed is 0.00 to +9.99 VDC. The normal optimum operating
level is +7.50 VDC.
