Transcript
RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE) FULLY INDEPENDENT RF TUNING
The RCB-4000 is a compact receiving system unit that combines two highperformance telemetry RF receivers.
L-3 Telemetry & RF Products (L-3 T&RF) RCB-4000 is a compact receiving system unit that combines two high-performance telemetry receivers, a dynamic pre-detection diversity combiner, a DSP-based multi-mode demodulator with programmed IF FIR and video filters and a programmable bit synchronizer within a single 5.25-inch rack-mounted chassis.
OPTIONS • Multi-band tuners for C-IF and C-RF capability • 3-channel, record-down converter (CH1, CH2, combined) • Spectrum IF display unit
FEATURES Use of U.S. DoD visual information does not imply or constitute DoD endorsement.
• C-Band RF/IF frequencies available • Meets IRIG Tier-II phase noise specifications • Dual, independently tunable receivers with multiple first- and second-IF bandwidths, an internal pre-D AM/AGC controlled diversity combiner and triple wideband DSP-based digital multimode demodulators with bit synchronizer • Excellent adjacent-channel rejection by using multiple, SAW first-IF bandwidth filters along with highly selectable FIR second IF filters • Optimal ratio combiner using high-speed AGC/AM-driven control signals. Combiner may be operated in optimal select mode for frequency diversity • Superior handling of fast/deep fades (50 kHz combiner break frequency) • Multiple, user-selected second IF FIR pre-programmed filters. Bandwidths from 50 kHz to 30 MHz are available for each channel. The unit comes preprogrammed with all IRIG filters. Other bandwidths can be programmed (consult factory) • Multimode FM, FM-Trellis, PM, AM, BPSK, QPSK, OQPSK, FQPSK/SOQPSK demodulator • Compatible with both conventional auto-tracking antenna systems and linear predictor antenna tracking systems (common in phased array antennas) • Small, lightweight and rugged design • Easy-to-use front panel and remote control via RS-232, Ethernet and IEEE-488 • Windows® application software supplied, providing remote operation of front panel controls via Ethernet interface
Telemetry & RF Products
RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE) FULLY INDEPENDENT RF TUNING APPLICATIONS
BENEFITS
• Data reception
• Internal bit synchronizer eliminates need for external components
• AM tracking receiver • Satellite TT&C
• Easy-to-use front panel controls all operations resulting in saving setup time, eliminating errors and resolving status issues
• Satellite image reception
• Programmed digital FIR filters eliminate costly
• Aircraft testing and evaluation
• IF upgrades
• Video reception from RPV/UAV vehicles • Expendable launcher data collection
• Three independent demodulators provide data for CH1, CH2 and the combiner at all times
• Unmanned telemetry sites requiring complete computer control
• The combiner allows for both polarization and frequency diversity combining
• Low Earth Orbit (LEO) satellite data collection
REDUCES
• Signal analysis
• Mobile tracking and data systems L-3 T&RF has been manufacturing general and special purpose receivers and combiners for over 30 years and continues to be the undisputed leader in telemetry receiving products which enable highly sophisticated data and signal processing over a wide frequency spectrum. The RCB-4000 exemplifies this leadership with state-of-the-art performance in a compact, easy-to-use form factor.
• Rack space • Power consumption • Rack wiring problems • Cost • Weight • Remote control complexities • Spares
BLOCK DIAGRAM
Telemetry & RF Products
• Maintenance issues
RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE) FULLY INDEPENDENT RF TUNING SINGLE-BIT SYNCHRONIZER DIAGRAM
TUNER
TUNER SPECIFICATIONS
The RCB-4000 contains a dual-channel tuner in the base unit
RF Tuner Type Dual conversion, Superheterodyne
covering the same frequency band with an option to have up to
Frequency Ranges
5090 to 5150 MHz (C Upper Band) 4400 to 4940 MHz (C Lower Band) 2185 to 2485 MHz (S/E Band) 1429 to 1545 MHz (Lower L-Band) 1750 to 1850 MHz (Upper L-Band) 610 to 1150 MHz (C-IF Upper Band) 400 to 460 MHz (C-IF Lower Band) 215 to 320 MHz (P-Band) (others available)
Second IF Center Frequency
70 MHz
AM OUTPUT Level modulation
2 VP-P into 75 Ω for 50%
Envelope AM Frequency Response
High-end response 50 kHz Low-end response determined by AGC TC
Receiver LO Stability
± 1.5 ppm
AGC Type
Envelope
AGC Time Constants
0.1, 1, 10, 100, 1000 ms
A programmable manual gain control is provided for each RF
Receiver Tuning Resolution
100 kHz
Section, which is controlled through the remote digital interface or
Manual Gain, AGC Freeze Variable by digital control
by the front panel. The RCB-4000 provides the capability to freeze
Noise Figure
8 dB maximum
the gain of the receiver with the remote digital interface or via the
Image Rejection
60 dB
5 bands installed in a single receiver. Tuners are independently tunable, thus allowing for frequency diversity. Available frequency ranges include P, UL, LL, S/E, C-IF and C-RF bands. The tuner’s center frequency can be selected with a resolution of 100 kHz either from the front panel or by remote control. For other frequency ranges, consult the manufacturer. The RCB-4000 Series has both an internal 10 MHz refer¬ence oscillator and the ability to use an external 10 MHz or 5 MHz reference. AM detection is provided after the second IF FIR filters, providing excellent adjacent channel rejection. The AM frequency response is determined by selection of the AGC time constant and the IF bandwidth. Individual AM outputs are provided for each tuner in the standard configuration. Envelope AGC is derived from a peak AM detector with five selectable time-constant settings.
front panel. Receiver gain is held to the value at the time the freeze Input Impedance
50 Ω (unbalanced)
command is detected.
Operating Dynamic Range
Threshold –10 dBm
AGC monitor outputs are provided for each RF section. An AGC zero capability is provided to optimize the performance of the
Maximum Input Level
+10 dBm
pre-detection combiner. Adjustment of this offset does not affect
IF Rejection
70 dB, 80 dB typical
AGC slope. Auto zero capability is programmable through the
Spurious Rejection
60 dB
remote digital interface or through the front panel. A single control
First LO Type
Synthesized
for each receiver channel zeros the AGC monitor outputs. Additional signal strength record outputs are provided with switchable output polarity.
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RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE) FULLY INDEPENDENT RF TUNING DIVERSITY COMBINER
DIGITAL MULTI-MODE DEMODULATOR
The RCB-4000 provides circuitry for pre-detection
Triple multi-mode demodulators employ the latest
diversity combining of the incoming signals. The
application specific technology in processing the 70MHz
combining takes place at 70 MHz. Selections
IF signal. Each demodulator provides FM, FM-Trellis, PM,
are offered through the front panel or through
BPSK, QPSK, OQPSK, and FQPSK/SOQPSK operation
the remote interfaces to perform Optimal Ratio
supporting data rates as high as 20Mbps. The flexible nature
Combining for polarization diversity combining.
of the demodulators and the associated IF and video filtering
The combiner may be operated in Optical Select
allows them to be used for a wide range of applications and
mode for frequency diversity applications,
easily reconfigured as applications change.
thus eliminating the need for a post-detection
Two analog video outputs per channel are provided for
combiner.
monitoring both I&Q video signals in QPSK, OQPSK,
When operating under normal conditions,
*FQPSK/SOQPSK operation. Programmed video FIR filters
the AGC levels from the tuners are a true
provide maximally flat group delay filters. Video filters are
measure of the quality of the received data, and
provided with the -3dB bandwidths from 150 kHz to 15 MHz.
combiner weighting is a direct function of these
Video filter values are as follows: 150 kHz, 187.5 kHz, 250
levels. Certain applications, (high multi-path
kHz, 375 kHz, 500 kHz, 750 kHz, 1 MHz, 1.2 MHz, 1.5 MHz,
environments, for example), may require that the
1.65 MHz, 2 MHz, 2.4 MHz, 2.5 MHz, 3 MHz, 3.3 MHz, 3.75
combiner weighting include the addition of an AM
MHz, 4 MHz, 5 MHz, 6 MHz, 7 MHz, 7.5 MHz, 10 MHz and 15
component. This is handled in the combiner where
MHz.
the AM component is summed with the AGC levels
Custom video filter bandwidths can be implemented by
to provide optimal combining under high fade rate
changing the receiver firmware (contact factory). The
conditions.
RCB-4000 provides user controllable video output levels
The Pre-Detection Combiner provides 2.5 dB
with 63 dB levels in 1 dB steps. The user can also control
signal-to-noise improvement with equal S/N
the video coupling (AC/DC) and video polarity.
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ratio inputs. (With unequal inputs S/N ratio) S/N combiner = 10 log (pr1 + pr2) to .5 dB. Where Pr1 = C/N power ratio CH1 and Pr2 = C/N power ratio
DEMODULATOR SPECIFICATIONS
of CH2.
Demodulation Modes
FM, FM Trellis, PM, AM, BPSK, QPSK, OQPSK, FQPSK/SOQPSK
DIGITAL IF FIR FILTERS
Acquisition and Tracking
± 250 kHz
The internal pre-programmed second IF FIR filters provide bandwidths from 50 kHz to 30 MHz
Doppler Tracking/Center 2.8125 MHz nominal Frequency
without the need for module replacement.
Reference Stability
± 1.5 ppm
Bandwidth selection is made through the remote
Video Output Level (adjustable)
4 V P-P nominal, 8 V P-P maximum
interfaces or by the front panel. All standard IRIG
Video Bandwidths
Digital IF FIR
Video Output Impedance
75 Ω unbalanced
Reference Oscillator
10 MHz internal, 5 or 10 MHz
filters are included. Contact factory for additional filter requirements.
The standard delivered IF FIR filters offered are as external follows: 50 kHz, 100 kHz, 150 kHz, 250 kHz, 300 kHz, 375 kHz, 500 kHz, 750 kHz, 1 MHz, 1.3 MHz, 1.5 MHz, 2 MHz, 2.4 MHz, 3 MHz, 3.3 MHz, 4 MHz, 5 MHz, 6 MHz, 7.5 MHz, 10 MHz, 12 MHz, 15 MHz, 20 MHz, 22 MHz, 25 MHz, 30 MHz.
RECORD TAPE CARRIER (OPTIONAL) A record carrier output is available as an option for the receiver. Record carrier frequencies, selectable through the remote digital interface or through the front panel, are in 25 kHz steps from 25 kHz to 20 MHz. The record carrier output level is 1 VRMS. The output impedance is 75 ohms.
Telemetry & RF Products
RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE) FULLY INDEPENDENT RF TUNING PROGRAMMABLE BIT SYNCHRONIZER
RCB-4000 GENERAL SPECIFICATIONS
• An programmable bit synchronizer is available
PHYSICAL
inside the RCB-4000 supporting data rates up to 20
Dimensions
5.25 in. H x 19 in. W x 22 in. D
Mbps per channel. The outputs of the bit sync are
Weight
< 45 lb.
NRZ-L data and clock.
Power Requirements Autosensing
115 to 230 VAC, 50/60 Hz 150 W typical
• The user can select the following:
DISPLAY
• Input code - NRZL/M/S, Bi-Phase-L/M/S
Graphics Display Type
LCD
• Output code - NRZL
Graphics Display Size
3.6 in. x 6 in.
• Bit Rate – 30 Kbps to 20 Mbps (NRZL) per
Graphics Display Color
White on Black
Data Entry
16-button keypad
channel • De-Interleaver – in or out (10 Mbps maximum) • Clock and Data Polarity settings • 15-bit derandomizer, on or off Settings can be changed via the front panel or through the remote digital interface.
Stored Setups Stores up to 27 setups in non-volatile memory AGC Modes
Automatic (AGC), Manual, Freeze
Interface Baud Rate
Up to 115.2 kbps
Remote Interface Formats Ethernet, RS-232, IEEE-488-2 ENVIORNMENT Operating Altitude
15,000 ft.
Storage Altitude
30,000 ft.
SPECTRUM DISPLAY UNIT
Operating Temperature Range
0 °C to 50 °C
The SDU unit provides basic spectrum analyzer
Non-Operating Temperature Range
-55 °C to +65 °C
Humidity
Up to 95% non-condensing
capabilities to the RCB-4000. The SDU unit allows the user to view incoming RF spectrum on channel 1 and 2. This allows the user to verify that the input signal is compatible with the receiver configuration. Additionally, the spectrum can also be provided.
SDU SPECIFICATIONS Display
Logarithmic 60 dB
Span
50 kHz to 20 MHz (selectable)
Reference Amplitude
-10 to -40 dBm (selectable)
Resolution Bandwidth
1 kHz to 300 kHz (selectable)
Video Bandwidth
1 kHz to 300 kHz (selectable)
Inputs
CH1, CH2 and external (70 MHz)
Markers (selectable)
Peak & delta measurements
Telemetry & RF Products
EMI/RFI Designed to meet or exceed MIL-STD-461-D
RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE)
RCB-4000 REAR PANEL CONNECTORS J1
AC Power Input
IEC-320 Appliance AC connector with strain relief
J27
Ethernet
J28
IEEE-488
J29
CH1 Video 2
75 Ω BNC, 0 to 4 VP-P
J30
CH1 Video 2
75 Ω BNC, 0 to 4 VP-P
J31
COMB Video 2
75 Ω BNC, 0 to 4 VP-P
J32-A1
CH1 AM
75 Ω BNC, 2 VP-P nominal
J32-A2
CH2 AM
75 Ω BNC, 2 VP-P nominal
J2
RF Input CH 1
50 Ω Type N, -10 dBm to threshold
J3
RF Input CH 2
50 Ω Type N, -10 dBm to threshold
J4
CH1 Video 1
75 Ω BNC, 4 VP-P nominal
J5
CH2 Video 1
75 Ω BNC, 4 VP-P nominal
J7
Reference Output (10 MHz)
50 Ω BNC, 0 dBm ±3 dB
J8
CH1 NRZ I
75 Ω BNC, 0 to 5 V nominal
J9
CH1 NRZQ
75 Ω BNC, 0 to 5 V nominal
J32-A3
OR’d AM
75 Ω BNC, 2 VP-P nominal
J10
CH1 Bit Sync CLK
75 Ω BNC, 0 to 5 V nominal
J32-A4
CH1 AGC
BNC, -6 V to +6 V
J11
CH1 IF OUT
50 Ω BNC, -11 dBm nominal
J32-A5
CH2 AGC
BNC, -6 V to +6 V
J13
COMB VIDEO 1
75 Ω BNC, 4 VP-P nominal
J32-A6
COMB AGC
BNC, -6 V to +6 V
J14
CH 2 NRZ I
75 Ω BNC, 0 to 5 V nominal
J32-A7
OR’D AGC
BNC, -6 V to +6 V
J15
CH 2 NRZ Q
75 Ω BNC, 0 to 5 V nominal
J33-A1
CH1 Doppler
BNC, -15 dBm nominal
J16
CH 2 BIT SYNC CLK
75 Ω BNC, 0 to 5 V nominal
J33-A2
CH2 Doppler
BNC, -15 dBm nominal
COMB Doppler
BNC, -15 dBm nominal
J17
CH 2 IF OUT
50 Ω BNC, -11 dBm nominal
J33-A3
J18
COMB NRZ I
75 Ω BNC, 0 to 5 V nominal
J33-A4
CH1 Record (Option)
J19
COMB NRZ Q
75 Ω BNC, 0 to 5 V nominal
75 Ω BNC, 1 VP-P nominal
J20
COMB BIT SYNC CLK
75 Ω BNC, 0 to 5 V nominal
J33-A5
CH2 Record (Option)
75 Ω BNC, 1 VP-P nominal
J21
COMB IF OUT
50 Ω BNC, -15 dBm nominal
J33-A6
COMB Record (Option)
J23
PMC-3362 Bit Sync (option)
‘D’-Pin 15 pin
75 Ω BNC, 1 VP-P nominal
J24
ACC (Accessories)
Type “D” 9-pin female
J34-A1
CH2 Signal STR Record
BNC, -6 V to +6 V
J34-A2
CH1 Signal STR Record
BNC, -6 V to +6 V
J34-A3
CH1 Signal Quality (Option)
BNC, RS-423
J34-A4
CH1 Signal Quality (Option)
BNC, RS-423
J34-A5
COMB Signal Quality (Option)
BNC, RS-423
J24-1
Ground
J24-2
TTL, COR CH2
J24-3
TTL, COR CH1
J24-4 J24-6 J25
Ground RS-232
Type “D” 9-pin female
J25-2
TX-Data
J25-3
RX-Data
J25-5 J26
Ground REF IN
50 Ω BNC, 0 dBm ± 2 dB
NOTE: CUSTOM MADE D-TYPE TO BNC INTERFACE CABLES ARE PROVIDED WITH THE EQUIPMENT FOR J32, J33 AND J34.
L-3 Telemetry & RF Products 9020 Balboa Avenue San Diego, CA 92123 Tel: 858.694.7500 800.351.8483
1515 Grundy’s Lane Bristol, PA 19007 Tel: 267.545.7000
Email:
[email protected] L-3com.com/ TRF
This presentation consists of L-3 Communications Corporation general capabilities information that does not contain controlled technical data as defined within the International Traffic in Arms (ITAR) Part 120.10 or Export Administration Regulations (EAR) Part 734.7-11 Data, including specifications, contained within this document are summary in nature and subject to change at any time without notice at L-3 Communications’ discretion. Call for latest revision. All brand names and product names referenced are trademarks, registered trademarks, or trade names of their respective holders. BRML660 Rev A
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