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Summary of Contents for Univox TLS-2.2
- Page 1 Univox® TLS-2.2 Loop amplifier for railway use User manual Part no 213112...
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Page 2: Table Of Contents
Table of contents Important information – checkpoints General – introduction Connections Electric Guidelines System planning – general Test equipment Input connection Power connection – isolation is important! Optimum Loop configuration Verify maximum peak Field Strength Verify Field Distribution variation Informative Technical data Approvals Safety/Warranty... -
Page 3: Important Information - Checkpoints
Univox TLS 2.2 hearing loop driver Univox TLS-2.2 is an audio induction loop driver developed for hearing loop installations in modern aluminum vehicles, railway- and similar applications in rugged environments. -
Page 4: Connections
Loop load connection. Loop figuration and wire coupling are vital for transmission and impedance matching. Long analog wires (like speaker cables) close parallel to the loop wires should be avoided. Contact Univox for detailed information and planning. “Loop” LED indicates transmission. -
Page 5: Electric Guidelines
Overvoltage IEC 50155 requires a MINIMUM of 1.4 times headroom as overvoltage protection. Univox has measured voltage up to 35VDC at some points when charging a 24V system voltage battery system. 1.4 times 35V is 49VDC. TLS 2.2 Maximum voltage is 50VDC. Therefore, we recommend having the isolated DC/DC converter in train installation for long-term safety. -
Page 6: Test Equipment
Multimeter – Loop wire resistance measurements • Oscilloscope – Oscilloscope (normally not required) with current clamp • Univox Listener – Detecting Field Strength, FS, peak and audio speech clarity • Field Strength Meter – Field distribution/variation for sinusoidal signal tests •... -
Page 7: Optimum Loop Configuration
Optimum Loop configuration Discuss with Univox prior to the planning of loop wire installation. It saves times for all involved parties, as there is new knowledge on the subject. Do not change the amplifiers’ factory default settings. For maximum efficiency, the output power is best controlled by loop configuration. -
Page 8: Verify Field Distribution Variation
6. Document the results and present it as variations in +-dB as a relative variation. Please communicate the results with Univox for comment or fault findings. On any abnormities, please halt the process and contact Univox for early communication. We are happy to be of assistance as early as possible. -
Page 9: Technical Data
DIAGNOSTIC OPTICAL OUTPUT Purpose: Verify TLS 2.2 functionality, normally during vehicle start-up. NOTE: It is strongly recommended to test the interface circuitry before final implementation. Please contact Univox for further details to verify the interface. Realization: Galvanically isolated (5.3 kV) optical transistor coupler with open Collector (D+) and open Emitter (D-). Conducts during transmission, otherwise an open state. -
Page 10: Approvals
Approvals The unit complies with all relevant standards included in Railway applications. EN-501555 • Temperature requirements (-25 to +70C) • Uses components rated at 105C and higher EN-61373 • Vibration compliance EN-45545-2 Hazard Level 2 • Fire & Smoke compliance EMC &... - Page 11 Univox Visiting address Phone +46-8-767 18 18 Stockby Hantverksby 3 Förrådsvägen 28 Email info@univox.eu SE-181 75 Lidingö, Sweden Web www.univox.eu SE-181 41 Lidingö, Sweden...
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