
Technical Data
Electrical Data
Overall system characteristics
Transmission Characteristics
IR transmission wavelength
870 nm
Modulation frequency
Carriers 0 to 5: 2 to 6 MHz, according to IEC
61603 part 7
Carriers 6 and 7: up to 8 MHz
Protocol and modulation
DQPSK, according to IEC technique 61603 part 7
System Audio Performance
(Measured from the audio input of an INT‑TX range transmitter to the headphone output of an
LBB 4540 range receiver.)
Audio frequency response
20 Hz to 10 kHz (-3 dB) at Standard Quality
20 Hz to 20 kHz (-3 dB) at Premium Quality
Total harmonic distortion at 1 kHz
< 0.05%
Crosstalk attenuation at 1 kHz
> 80 dB
Dynamic range
> 80 dB
Weighted signal-to-noise ratio
> 80 dB(A)
Cabling and System Limits
Cable type
75 Ohm RG59
Maximum number of radiators
30 per HF output
Maximum cable length
900 m (2,970 feet) per HF output.
Transmitters and Modules
Infrared Transmitters
Mains voltage
100-240 Vac, 50-60 Hz
Power consumption
operating, maximum
55 W
standby
29 W
Asymmetrical audio inputs
+3 dBV nominal, +6 dBV maximum (± 6 dB)
+15 dBV nominal, +18 dBV maximum (± 6 dB)
Symmetrical audio inputs
+6 to +18 dBV nominal
Emergency switch connector
Emergency control input
Headphone output
32 ohm to 2 kohm
HF input
Nominal 1 Vpp, minimum 10 mVpp, 75 ohm
HF output
1 Vpp, 6 VDC, 75 ohm
12
12.1
12.1.1
12.1.2
Language Distribution System
Technical Data | en
77
Bosch Security Systems B.V.
Operation manual
2013.11 | V1.4 |
Summary of Contents for INT-TX04
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