Rack-Mount RDMS
TM
Telemetry Receiver
58
Quasonix, Inc.
If the input signal is not close enough to the previously commanded bit rate to be within the current bit synchronizer
lock range and the signal is not locked, a message box displays, as shown in Figure 104.
Figure 104: Sync Measured Bit Rate Not Valid Message
4.1.5.10.2 IF Filter
The receiver’s integrated IF filter module, shown in Figure 105, includes eight (8) SAW filters, ranging in
bandwidth from 250 kHz to 40 MHz in approximately one-octave steps. The standard eight filters are 250 kHz, 500
kHz, 1 MHz, 2 MHz, 4.5 MHz, 10 MHz, 20 MHz, and 40 MHz. These filters serve as anti-aliasing filters ahead of
the A/D converter in the demodulator itself. In addition, they can provide an added measure of adjacent channel
interference rejection.
Figure 105
: 70 MHz IF Module in 2” x 3” Chassis