The RCB-4000 is a compact receiving system unit that combines two highperformance

RCB-4000 DIGITAL RECEIVER SYSTEM (C-BAND CAPABLE) FULLY INDEPENDENT RF TUNING The RCB-4000 is a compact receiving system unit that combines two highp...
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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.

Telemetry & RF Products

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.

Telemetry & RF Products

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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