User's Manual

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33!
Upconverter
The digital QAM Upconverter includes three independent plug-in Upconvert
e
modules. The unit uses a common power supply. The Upconverter converts
44 MHz IF signal to the RF 757-758 band, implementing spectrum inversion.
T
unit utilizes high quality circuit, enabling high quality RF signal.
Each Upconverter module rear panel includes IF In, RF Out and RF -30 dB te
s
point. The RF test point is use for permanently connect the Upconverter to t
h
MMU (monitor modem unit), enabling BTS self test. The module rear panel
includes also a 6 pin RS232 connector, permanently connected to the RCU
(remote control unit) for remote control and monitoring.
Each Upconverter module front panel includes -20 dB test point. In addition
t
is a front panel RS232 connector for local remote control and monitoring
(through Lap top or Local Control Unit).
Figure 10: Upconverter rear panel
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Figure 11: Upconverter module front panel
Power Amplifier
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