Digital IF Receiver SINGLE/DUAL/QUAD CHANNEL

Digital IF Receiver SINGLE/DUAL/QUAD CHANNEL
Digital IF Receiver
SINGLE/DUAL/QUAD CHANNEL
MODEL 4423
Features
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General Description
Up to 4 Independent Channels per 2U Box
Form Factor
 2U Rack Mount Chassis
2 Input Ports (per Channel)
Tunable Center Frequency Bands
 1 kHz to 180 MHz
Wide Dynamic Range
 > 80 dB
Programmable Acquisition & Tracking
Range
Multi-Waveform Demodulation
 BPSK, QPSK, OQPSK
 UQPSK *, AQPSK *
 SOQPSK (ARTM Tier 1) *
 Analog FM & PCM/FM *
 GMSK*
 Multi-Symbol PCM/FM *
3 Demodulators (Per Channel)
 PCM / PSK *
 1 RF, 2 SC * (Per Channel)
2 Bit Synchronizers (Per Channel) *
 50 bps to 10 Mbps BPSK (20 Mbps *)
 50 bps to 20 Mbps QPSK (40 Mbps *)
 2 Viterbi Decoders *
 R=1/2, 1/3, 2/3, 3/4/ 5/6, 7/8
 Reed-Solomon *
 HDLC / AX.25 (e.g. CUBESAT) *
3 Frame Synchronizers per Channel
Byte Aligned Ethernet Data Output *
Best Source Selector Compatible Output *
Tracking Antenna Control Support *
 Envelope / Coherent AM *
 SNR *
IRIG-B *
 Input, Output
Chapter 10 Compatible Output *
Remote Control
 Ethernet & RS-232 (Std)
 IEEE 488 *
* OPTIONAL
The Model 4423
Digital IF Receiver
houses up to 4 high
performance receiver
channels in a 2U chassis. Each independent channel is an
integrated solution consisting of an IF Signal Processor, 3
Demodulators, 2 Bit Synchronizers and 3 Frame
Synchronizers. This state-of-the art receiver provides a
compact, cost competitive, flexible solution to a wide
variety of communications link scenarios.
The Model 4423 is user programmed to select one of two
inputs for processing. The input frequencies within the
factory-configured Tunable Center Frequency Band are
demodulated.
The demodulation process as well as baseband bit
synchronization process is totally performed in the digital
domain. Signal acquisition is performed by scanning the
IF within the programmed acquisition band centered about
the selected Carrier frequency. PM / PSK waveforms are
additionally scanned for acquisition at the subcarrier
frequencies. Once signal acquisition is complete,
synchronized signal tracking is performed whereby
continuous validation of the lock state is maintained.
A variety of FEC decoders are available and fully
programmable frame synchronizers are included for
pattern detection.
With the Bit Synchronizer option, data is output via a pair
of TTL and RS-422 outputs.
The unit supports an optional Ethernet output mode by
which frame synchronized byte aligned data can be
transported. UDP/IP transport is provided for raw data
and, optionally HDLC/AX.25 data. IRIG-106 Chapter 10
compatible output is also available.
An Encapsulated data and data-quality output may be
included that supports the GDP Best Source Selector
products.
EXT REF
REF OSC
PM DEMOD
IN1
IN2
INPUT
PROCESSOR
PSK
DEMODS
FM DEMOD
BIT SYNCS/
DECODERS/
FRAME
SYNCS
ANALOG
PORT1
ANALOG1
ETHERNET
DATA PORT
ETHERNET
TTL/ RS422
DATA PORT
Q DATA/CLK
I DATA/CLK
Control/Status
All Functions
CONTROL
CONTROL / STATUS:
RS-232, (Optional RS-485, Ethernet)
300 Welsh Road · Building 3 · Horsham, PA 19044-2294
Phone: 215-657-5270 Fax: 215-657-5273
ANALOG
PORT2
SERIAL
COMBINED/
CLK
ANALOG2
URL: http://www.gdpspace.com
E-mail: gdpinfo@gdpspace.com
Digital IF Receiver
MODEL 4423
CHANNEL SPECIFICATIONS
Input:
Input Ports
Center Frequency
Input Filters
Dynamic Range
Input Impedance
VSWR
Demodulator(s):
IF Acquisition / Tracking Range
Loop Bandwidth
PM Demodulator
Frequency Response
Modulation Index
PSK Demodulators
Types
Modulation Waveforms
Locking Threshold
PCM/FM Demodulator
Data Rate
Bit Synchronizer(s): (Option)
Bit Rate
2
1 kHz to 180 MHz or 180 MHz to 1100 MHz
Selectable filter bandwidths
> 80 dB
50 ohms
< 1.5:1
 255 kHz
0.01% to 1% of Bit Rate (Analog PM 2 Hz to 20 KHz)
100 Hz to 15 MHz
0 to 3.0 Radians
1 IF, 2 SC (optional)
BPSK, QPSK, OQPSK, UQPSK *, AQPSK *, GMSK *,
SOQOSK ARTM Tier 1 (Optional)
6 dB Eb/No
50 bps to 20 Mbps (30 Mbps Optional)
50 bps to 10 Mbps BPSK (20 Mbps Optional)
100 bps to 30 Mbps QPSK (40 Mbps Optional)
NRZ-L,M,S; BI-L,M,S
NRZ-L
Viterbi Rate 1/2, 1/3, 2/3, 3/4, 5/6, 7/8 ; Reed Solomon
Input Codes
Output Codes
Decoders *
Descrambler
V.35 / V.36 (CCITT/ Intelsat)
Frame Pattern Detector: (Option)
64-bit FSP w/ full Mask and Strategy
Data Outputs:
Analog
TTL, RS422 (Standard) I, Q, COMBINED
Ethernet Data Output (IRIG-106 Ch-10, HDLC/AX.25)*
Encapsulated Data & Quality Output that supports GDP Best Source Selector (Optional)
Control Interface:
RS-232 & Ethernet (Standard)
Ethernet (Optional)
Environment:
Temperature
10°C to 50°C Operational; -40°C to 85°C Storage
Status Outputs:
Signal Present, Carrier Lock, Bit Synchronization Lock, Viterbi Lock, Frame Lock, Doppler
Ordering Information
MD4423-00
OP4423-01
OP4423-02
OP4423-03
OP4423-04
OP4423-05
OP4423-07
OP4423-08
OP4423-21
OP4423-22
Basic Unit (Single Channel)
2nd Channel Card (Dual Channel Unit)
Viterbi (R 1/2) (Requires OP-40)
Analog FM & PCM/FM
Viterbi (R 3/4) (Requires OP-40)
SOQPSK
PM/PSK
GMSK
IEEE-488 Remote Control
Ethernet Remote Control
Recognizing that no standard product can meet all the needs of
all users, GDP stands ready to provide units tailored to unique
applications.
OP4423-30
OP4423-40
OP4423-41
OP4423-45
OP4423-61
OP4423-65
OP4423-7X
OP4423-8X
OP4423-89
OP4423-93
OP4423-VI
* OPTIONAL
140811
AM/AGC Antenna Tracking
Bit Syncs w/Frame Syncs (Pattern detectors)
Extended Bit Rate (20 Mbps BPSK, 40 Mbps QPSK
Ethernet Data Output (Byte Aligned Data)
IRIG B Time Input
Ethernet Chapter 10 Output
Filters (Selectable BW Filters)
Special Frequency Bands
Chassis Slides
Reed Solomon
Remote Control VI Software
The statements in this data sheet are not intended to create any warranty, expressed or implied. Equipment specifications are subject to
change without notice.
300 Welsh Road · Building 3 · Horsham, PA 19044-2294
Phone: 215-657-5270 Fax: 215-657-5273
URL: http://www.gdpspace.com
E-mail: gdpinfo@gdpspace.com
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