VIAVI RGS-2000NG NextGen TCAS Test Set and ADS-B Target Generator

RF signal generator/receiver for TCAS testing with ADS-B target generation and an optional transponder test capability.

Range: 952 MHz to 1223 MHz
Resolution: 100 KHz
Accuracy: ±10 KHz

Datasheet

Overview

The VIAVI RGS-2000NG is an RF signal generator/receiver for testing TCAS (Traffic Alert and Collision Avoidance System) equipment. An option adds testing of transponder LRUs. The instrument replaces the earlier RGS-2000 and is intended for engineering development, design validation, manufacturing and return-to-service testing.

The RGS-2000NG uses software-driven digital modulation, so new features, capabilities or changes required by industry updates can be added in the field through software updates. It also works as a TCAS and ADS-B target generator. In scenario mode it simulates dynamic and static targets at 1090 MHz, and with the appropriate options it simulates UAT targets at 978 MHz and blocks of Ground Station and TCAS messages at 1030 MHz.

Operators control the test set from a 10.4 inch touch screen LCD, or remotely over GPIB or Ethernet. Other capabilities include four-port antenna simulation, ADS-B squitter encode/decode, pulse and frequency measurement, hybrid surveillance and data parsing for analysis. The test set can perform most MOPS tests for DO-185A, DO-185B, DO-260, DO-260A, DO-260B, DO-260C, DO-282B, DO-282C, DO-181E and DO-300.

Key Features

Software-driven design allows field updates for new features, capability or modifications due to industry changes
TCAS and ADS-B target generator
Simulates 32 dynamic and 568 static ADS-B/TCAS targets at 1090 MHz in scenario mode
Simulates 32 dynamic and 1,500 static UAT targets at 978 MHz as airborne or ground link messages (requires RGSNGOPT10 Transponder, RGSNGOPT14 Multi-receiver, or RGSNGOPT13 UAT options)
Simulates blocks of up to 1,000 messages for Ground Station and TCAS messages at 1030 MHz (requires RGSNGOPT14 Multi-receiver)
ADS-B squitter encode/decode
Pulse and frequency measurement
Transponder test option for Modes A, C, S
10.4 inch touch screen LCD display for operator control of all test set capabilities
Remote control via GPIB or Ethernet
Four port antenna simulation
Hybrid surveillance
Data parsing for analysis

Specifications

Transmitter – Frequency

Range	952 MHz to 1223 MHz
Resolution	100 KHz
Accuracy	±10 KHz

Transmitter – Power

Range (TCAS)	-20 to -90 dBm (Low Power Mode); +1 to -69 dBm (High Power Mode)
Range (Transponder) RGSNGOPT10	-20 to -90 dBm
Range (UAT) RGSNGOPT13	+1 to -98 dBm T1 port only
Range (Multi-Receiver) RGSNGOPT14	+1 to -69 dBm (High Power Mode); -20 to -90 dBm (Low Power Mode)
Resolution	1 dB
Accuracy	±1 dB 1030 and 1090 MHz (978 MHz with UAT or Multi-Receiver options installed)

Transmitter – Spectral Purity (Typical)

Harmonics	<-50 dBc
Spurious	<-55 dBc 350 to 1800 MHz
Residual FM	250 Hz Peak
Phase Noise	<-80 dBc/Hz @ 100 KHz

Transmitter – Diversity (Transponder)

Power range	±20 dB Absolute output power under any test condition is limited to the ranges shown under Power
Power resolution	0.1 dB
Power accuracy	±1 dB
Timing range	±1 µs
Timing resolution	±25 ns
Timing accuracy	±10 ns

Pulse Characteristics

Pulse On/Off Ratio	>80 dB 1030 and 1090 MHz (978 MHz with UAT or Multi-Receiver options installed)
ATCRBS Replies (TCAS) pulse position, nominal (all pulses)	1.45 µs from previous pulse Pulse timing accuracy applies with transmitters configured for 50/50 ns rise/fall time mode only
Pulse position resolution	25 ns
Pulse position accuracy	±10 ns
Pulse width resolution	25 ns Specified accuracies apply to pulses of width ≥ 0.2 µs
Pulse rise/fall time, TCAS Low Power Mode (available settings)	<50/<50 ns, 75/110 ns, 100/200 ns, 230/230 ns, 600/600 ns
Pulse rise/fall time, TCAS High Power Mode	<50/<50 ns
Pulse rise/fall time accuracy	±25 ns
Pulse rise/fall time, Transponder Test Mode RGSNGOPT10	<50/<50 ns, fixed
Pulse amplitude, Transponder Test Mode (relative to P1) RGSNGOPT10	+9 to -19 dB ATCRBS (all pulses) and Mode S Interrogation (P2, P5 and P6); resolution 1 dB, accuracy ±1 dB

Bearing Simulation

Range	0 to 359° Phase and magnitude directional
Resolution	1°
Accuracy, Low Power Mode, 4-Port Antenna (phase directional)	4-Port Formula, ±2° Standard deviation <1° at any simulated bearing; ±4° deviation between any port referenced to port 1. 30 minute wait required after changing power mode
Accuracy, Low Power Mode, 2-Port Antenna (phase directional)	Port to Port, ±4°
Accuracy, Low Power Mode (magnitude directional)	4-Port Formula, ±2°; Power Table, ±0.556 dB (equivalent to ±2°)
Accuracy, High Power Mode	4-Port Formula, ±5° typical Phase and magnitude directional

Intruder Simulation (TCAS)

Range simulation, Mode S	0 to 160 nmi
Range simulation, Mode C	0.5 to 160 nmi
Range simulation resolution	.001 nmi
Range simulation accuracy	±200 ft
Velocity range	2000 kts Resolution 1 kt, accuracy ±1 kt
Vertical speed range	±32,608 ft/min Resolution 64 ft/min, accuracy ±64 ft/min
Altitude simulation range	-1000 to +126700 ft Accuracy ±25 ft
Altitude simulation resolution	< 50175 ft altitude, 25 or 100 ft; >50175 ft altitude, 100 ft

Interrogation (Transponder)

Interrogation table/burst mode, # of messages RGSNGOPT10	1 to 1000 messages
Interrogations/Burst RGSNGOPT10	1 to 10 K
Block transmissions, number of messages (TCAS)	1 to 1000
Block transmissions, number of messages (Transponder) RGSNGOPT10	1 to 2000
Number of blocks	1 to 50,000 or infinite
Block period range	10 ms to 90 seconds Resolution 1 ms, accuracy ±1 ms
PRF, single interrogations RGSNGOPT10	1 to 10 KHz Resolution 1 Hz, accuracy 0.1% of setting
Interlace ratio RGSNGOPT10	1:1 to 1:1000

Receiver

Decoding, ATCRBS	Interrogations (TCAS) and Replies (Transponder)
Decoding, Mode S	Interrogations (TCAS) and Replies (Transponder)
Decoding, UAT RGSNGOPT13	Ground and Airborne Messages B1 port only
Range, 1030/1090 MHz (TCAS/Transponder)	+17 to +60 dBm
Range, 978 UAT RGSNGOPT13	+30 to +57 dBm

Measurement

Power (1030 and 1090 MHz) range	+17 to +60 dBm Resolution 0.1 dB, accuracy ±0.5 dB
Frequency, pulse measurement type	1030 MHz (±3 MHz); 1090 MHz (±3 MHz) Resolution 1 KHz, accuracy ±50 KHz
Frequency, 1030 measurement type	1030 MHz ±50 KHz TCAS, DO-185, Mode S, Test-Mode 3 only; resolution 100 Hz, accuracy ±1 KHz
Phase (TCAS)	0 to 359°; any port reference to T1/B1 Resolution 1 degree, accuracy ±4 degree
Pulse spacing accuracy	±10 ns Resolution 1 ns; applies for input signals ≥ +33 dBm
Pulse width accuracy	±15 ns Resolution 1 ns; applies for input signals ≥ +33 dBm
Reply delay (Transponder) accuracy RGSNGOPT10	±50 ns Resolution 25 ns
Percent reply (Transponder) range RGSNGOPT10	0 to 100 % Sample size equal to PRF or 200, whichever is greater; resolution 0.1 %, accuracy ±1%
Mode S squitter (Transponder) accuracy RGSNGOPT10	±1 ms, ±2.5 ppm Resolution 1 ms

Antenna

VSWR	<1.4 (978, 1030 and 1090 MHz)
Cross coupling, adjacent ports	-17 to -20 dB

Spectrum Analyzer Ports

Insertion loss, SA AMP	-31 ±5 dB Antenna ports to spectrum analyzer outputs; Mod Strike 4 required
Insertion loss, SA Thru	-59.5 ±5 dB Mod Strike 4 required

Display and Interfaces

Display	10.4 inch touch screen LCD
Remote control	GPIB or Ethernet

AC Input Power

Voltage range	100 to 240 VAC, 50 to 60 Hz
Power consumption	150 W typical

Environmental

Temperature, full specified performance	23° ±5° C (73.4°F ±5°) Requires 1 hour warm-up period to meet specified performance
Operating temperature	0° to +40°C (32° to +104°F)
Storage temperature	0° to +71°C (32° to +159.8°F)
Relative humidity	0 to 95% non-condensing

Physical

Size (test set only)	10.5” H x 19” W x 24” D (26.67 cm x 48.26 cm x 60.9 cm) Web page lists 26.7 cm x 48.3 cm x 60.9 cm
Weight	43 lbs. (19.5 kg)

Compliance

Standards	CE, UL/EN 61010-1, EN 61326-1, MIL-PRF-28800F (Class 3 Device)

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Applications

Engineering development
Certification
Manufacturing
Service and return-to-service testing
MOPS testing for DO-185A, DO-185B, DO-260, DO-260A, DO-260B, DO-260C, DO-282B, DO-282C, DO-181E and DO-300
Replacement for the RGS-2000
TCAS computers
ADS-B In receivers
ADS-B In ground station receivers
ADS-R, TIS-B ground station transmitters
Transponders Mode S/ADS-B Out (transponder option)

Options & Accessories

Option	Description
RGSNGOPT10	Transponder — Transponder test option for Modes A, C, S
RGSNGOPT13	UAT 978MHz — UAT target simulation and decoding at 978 MHz
RGSNGOPT14	Multi-Receiver — Required for simulating blocks of up to 1,000 Ground Station and TCAS messages at 1030 MHz
Option 15	DO-260B MOPS Test