R&S®GB4000V Audio Unit

Remote audio operation

Key Facts

  • Compact design to minimize the space required in operator consoles
  • Analog connection for use with all Rohde & Schwarz radios

Brief Description

The R&S®GB4000V is a remote audio unit, designed for use in both civil and military applications. It is ideally suited to small ATC systems where a dedicated voice switch is not present.

Specifications

Analog audio interface to radio
Frequency response 300 Hz to 3.4 kHz, (+1 dB/-3 dB (1 kHz))

Key Facts

  • Compact design to minimize the space required in operator consoles
  • Analog connection for use with all Rohde & Schwarz radios
  • In-band PTT and SQ signaling for use with R&S®Series4200 radios
  • EUROCAE ED137-1 compliant VoIP connection to R&S®Series4200, R&S®Series4400 and R&S®Series4100 radios
  • Built-in loudspeaker with volume control
  • Configurable mininum volume setting to ensure safety
  • LEDs indicate the status of the radios (PTT, squelch, VoIP)
  • Available with an additional headset connector for instructor operation
  • External loudspeaker connection for monitoring
  • Can be mounted in a 19" rack or in operator consoles
  • Two independent DC connections for redundant power supply
  • Easily configurable via a web browser
  • Splash-proof front panel

Brief Description

The R&S®GB4000V is a remote audio unit, designed for use in both civil and military applications. It is ideally suited to small ATC systems where a dedicated voice switch is not present.

The R&S®GB4000V provides audio, PTT and squelch to and from radios in a remote location. The unit is compact and fits into any console. The R&S®GB4000V can be connected to the radios using 4-wire E & M (analog line) or voice over IP (VoIP). When connected using an analog line, either 4-wire E & M lines (PTT, SQ) or in-band tones for E & M can be used. The available tones are 2040 Hz (PTT) and 2440 Hz (SQ). In-band signaling is handled by the R&S®GB4000V, thus eliminating the need for other external devices.

When used with the R&S®GB4000T touchscreen control unit, the R&S®GB4000V can be connected to any of up to nine channels using R&S®Series4200 radios via VoIP.

Specifications

Analog audio interface to radio
Frequency responseat 600 Ω300 Hz to 3.4 kHz, (+1 dB/-3 dB (1 kHz))
Input impedancesoftware-configurable setting600 Ω/10 kΩ
Output impedancesoftware-configurable setting600 Ω/60 Ω
Input levelsoftware-configurable setting–30 dBm to +10 dBm at 600 Ω
Output level 0 dBm ± 1.5 dB at 600 Ω
Signal qualityat 600 Ω without CCITT-FilterTHD < 0.5 %,
S/N > 60 dB at 0 dBm input
Digital audio interface to radio
LAN interface 100BaseT
Session control SIP in line with EUROCAE ED137-1
Audio stream RTP in line with EUROCAE ED137-1
Audio codec in line with ITU-T G.711, A-Law
Microphone/headset interface
Microphone input level for dynamic microphoneinput impedance 200 Ω, with AGC1 mV (±20 dB)
Microphone input level for electret
microphone
input impedance 330 Ω, with AGC100 mV (±20 dB)
Headset output leveloutput impedance 200 Ωmax. 2 V
Loudspeaker
Output power, built-in loudspeaker ≤ 2 W at 8 Ω, adjustable
Output power, external loudspeaker ≤ 5 W at 8 Ω, adjustable
Minimum levelsoftware-configurable setting1 mW to 2.5 W
for external loudspeaker,
1 mW to 1.5 W
for internal loudspeaker,
1 mV to 17 mV for headphone
Electrical data
Power supply dual supply, 2 × 19 V (± 5 %) to 32 V
(± 5 %) DC each
Power consumption max. 1.0 A
Electrical safety in line with EN 60950
EMC emissions in line with ETSI EN 301 489-1/-22;
in line with MIL-STD-461F
CE101 figure CE101-4, curve 2,
CE102 figure CE102-1,
RE101 figure RE101-2,
RE102 figure RE102-1,
RE102-3 fixed wing > 25 m (nose to tail),
RE102-4 navy fixed and air force
EMC immunity in line with ETSI EN 301 489-1/-22;
in line with MIL-STD-461F
CS101 figures CS101-1 and CS101-2, curve 2,
CS114 ships (metallic, below decks), curve 2,
RS101 figure RS101-2 (max. field strength 160 dBpT),
RS103 ships ( metallic, below decks),
RS103 navy (2 MHz to 1 GHz, field strength 10 V/m)
Environmental data
Temperature rangeoperational
storage
–20°C to +55°C
–40°C to +70°C
Humidity ≤ 95 % at 55°C
Mechanical data
Dimensions
Front panel (W × H)model .02 and .03
(mounting in line with IEC
60297)
19"/4, 3 HU
106.4 mm × 128.7 mm (4.2 in × 5.1 in)
model .12100.6 mm × 131 mm (4.0 in × 5.2 in)
Body (W × H × D) 93 mm × 103 mm × 120 mm
(3.7 in × 4.1 in × 4.7 in)
Weight < 0.8 kg (< 1.8 lb)
Degree of protection IPx4 for front panel
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