Radyne ComStream SFC6400A, Installation And Operation Manual

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SFC6400A/SFC1450A Synthesized Frequency Upconverter Introduction
TM106 – Rev. 1.1 1-1
Section 1 - Introduction
1.0 Description
This manual discusses the Radyne ComStream Corporation SFC Synthesized Frequency
Upconverter family of products (Figure 1-1). These include the SFC6400A C-Band, and the
SFC1450A Ku-Band Synthesized Frequency Upconverters. They are high quality, rack mounted
satellite Upconverters that are intended for use in medium-to-large earth station installations where
multiple carrier uplinks need to be established. The SFC Upconverters are ready to be configured
into a variety of backup switch configurations, which include 1:1, and 1:N (to a maximum of N = 8)
configurations.
Figure 1-1. SFC Upconverter Front Panel
The SFC6400A Upconverter is a C-Band, 125 kHz resolution synthesized satellite upconverter
capable of converting either a 36 MHz bandwidth, 70 MHz IF input or optionally a 72 MHz
bandwidth, 140 MHz input to a C-Band uplink in the range of 5845 - 6425 MHz (5845 - 6650 MHz
extended band).
The SFC1450A Upconverter is a Ku-Band 125 kHz resolution synthesized satellite Upconverter
capable of converting either a 36 MHz bandwidth, 70 MHz IF input or optionally a 72 MHz
bandwidth, 140 MHz input to a Ku-Band uplink in the range of 14.00 - 14.50 GHz (13.75 - 14.50
GHz extended band).
All of the configuration, monitor, and control functions are available at the front panel. Operating
parameters such as frequency, channel, gain, gain offset, and switch settings (backup only) can be
readily set and changed at the front panel. Additionally, all functions can be accessed with a
terminal or personal computer via a serial link (RS-232, RS-485, or Ethernet) for complete remote
monitoring and control (M&C) capability. Extensive fault monitoring with masking capability, along
with time and date stamped event storage is available.
The units monitor local oscillator (LO) phase-locked loop faults in the converter at all times during
operation. If a fault is detected, the converter immediately goes into the Standby Mode. If multiple
converters are configured to provide backup protection switching, a summary fault will signal the
backup, which will put itself online and restore the failed circuit.
The RF Hardware consists of a broadband synthesizer, a fixed frequency phase locked oscillator,
and the first and second converter modules. The broadband synthesizer provides the synthesized
local oscillator for the conversion from L-Band to RF output. The LO that tunes from 4.6625 -
5.2425 GHz or 4.480 – 5.285 GHz (SFC6400A), or from 11.98 – 12.73 GHz (SFC1450A) performs
this conversion. The second mixer converts the 70 or 140 MHz IF input to L-Band. A fixed
frequency First IFLO performs this frequency conversion.
A 20 dB gain control attenuator at the RF output controls the power out of the converter. This
attenuator is capable of 0.1 dB resolution through a software linear interpolation of 1 dB calibration
values.