Description

Remote audio operation
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 response at 600 ? 300 Hz to 3.4 kHz, (+1 dB/-3 dB (1 kHz))
Input impedance software-configurable setting 600 ?/10 k?
Output impedance software-configurable setting 600 ?/60 ?
Input level software-configurable setting –30 dBm to +10 dBm at 600 ?
Output level 0 dBm ± 1.5 dB at 600 ?
Signal quality at 600 ? without CCITT-Filter THD <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 microphone input impedance 200 ?, with AGC 1 mV (±20 dB)
Microphone input level for electret microphone input impedance 330 ?, with AGC 100 mV (±20 dB)
Headset output level output impedance 200 ? max. 2 V
Loudspeaker
Output power, built-in loudspeaker ? 2 W at 8 ?, adjustable
Output power, external loudspeaker ? 5 W at 8 ?, adjustable
Minimum level software-configurable setting 1 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 range operational 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 .12 100.6 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
''