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Summary of Contents for ASCOM H952T
- Page 1 TD 92022EN Installation Guide H/U952T Terminal Transmitter 3 July 2013 / Ver. G...
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Page 2: Table Of Contents
Installation Guide TD 92022EN H/U952T Terminal Transmitter Contents 1 General ..........................1 1.1 Regulatory Compliance Statements (EU/EFTA only) ............2 1.2 Regulatory Compliance Statements (USA only) .............. 2 2 Board Description ......................3 3 Installation........................5 3.1 Mounting ............................ 6 3.2 Opening the Housing....................... -
Page 3: General
Installation Guide TD 92022EN H/U952T Terminal Transmitter General Terminal Transmitter H/U952T is used in the Ascom Paging System. The Terminal Transmitter operates in both UHF and HF frequency bands. Figure 1. H/U952T Terminal Transmitter. U952T is approved for On-board installations. See IMPORTANT: ON-BOARD INSTALLATIONS on page 5 for more information regarding output power. -
Page 4: Regulatory Compliance Statements (Eu/Efta Only)
TD 92022EN H/U952T Terminal Transmitter Regulatory Compliance Statements (EU/EFTA only) Hereby, Ascom (Sweden) AB, declares that this equipment is in compliance with the essential requirements and other relevant provisions of R&TTE Directive 1999/5/EC. The declaration of conformity may be consulted at:... -
Page 5: Board Description
Installation Guide TD 92022EN H/U952T Terminal Transmitter Board Description P400 LED100 C444 (U952T) L401 (H952T) L301 LED302 LED301 LED300 LED201 J102 LED302 LED301 LED300 LED201 J200 SW200 IC101 SW100 J101 J103 J100 Figure 2. H/U952T circuit board. 3 July 2013 / Ver. G... - Page 6 Potentiometer, for calibration of output power. L301 Inductance coil, for fine adjustment of reference frequency. C444 Capacitor, for adjustment of VCO frequency (only U952T). L401 Inductance coil, for adjustment of VCO frequency (only H952T). 3 July 2013 / Ver. G...
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Page 7: Installation
Installation Guide TD 92022EN H/U952T Terminal Transmitter Installation The unit should be placed in a dry environment. A temperature between 0 and +40°C is preferred. The unit will operate in the temp range -15 up to +55°C. The unit can be installed alone or together with other system units using the modular bus cabling or twisted-pair wiring. -
Page 8: Mounting
Installation Guide TD 92022EN H/U952T Terminal Transmitter Mounting IMPORTANT: The unit must be mounted to a vertical wall with the bottom facing the floor. Bottom The illustration below shows the dimensions in mm for mounting the unit. Dimensions (H x W x D) 275 x 130 x 60 mm 56.5 188.5... -
Page 9: Opening The Housing
Installation Guide TD 92022EN H/U952T Terminal Transmitter Opening the Housing Use a screwdriver or similar to release the cover by applying a light pressure to the two snap catches (1) and remove the cover (2). Figure 4. Releasing the cover. NOTE: The internal metal shield should not be opened. -
Page 10: Wiring Runs
Installation Guide TD 92022EN H/U952T Terminal Transmitter Wiring Runs Wiring can be run three ways from the unit: • Remove the rectangular covers and run the cabling out through the side (1). • Run the cabling through the round holes at the bottom of the case (2). •... -
Page 11: Connection Of Buses And Control Equipment
Installation Guide TD 92022EN H/U952T Terminal Transmitter Connection of Buses and Control Equipment Buses are connected either via modular bus cabling or twisted-pairs. NOTE: Data buses are polarized! Use only twisted-pairs for separate wiring! Bus Connections via Modular Bus Cabling J100 + J101 Pin 1 Pin 8... -
Page 12: Connection Of Supply Voltage
Select the address by setting the address selector switch SW100. See the System Installation document, chapter Addressing. The address for H/U952T must not be 00, nor the same as any other Ascom Paging unit D-bus address. In case the system includes speech, the Terminal Transmitter must be in the address range for speech transmitters (hex address 80-FF). -
Page 13: Coax Connection To Antenna
Installation Guide TD 92022EN H/U952T Terminal Transmitter Coax Connection to Antenna • Connect the antenna coax to the antenna output connector located at the upper right of the Terminal Transmitter. • To prevent water from running along the antenna cable and entering the Terminal Transmitter, let the cable form a loop downwards. -
Page 14: Parameter Settings
When FOM or SFO is used this has to be enabled with the right offset. If the Terminal Transmitter is to be used with old central software that do not support U/H952T (specified in the parameter list), set the Terminal Transmitter to act as an U/H950T. -
Page 15: Installation Test Procedure
Check that address switch SW100 has the right address. See the System Installation document, chapter Addressing. Energize all units in the Ascom Paging System. Function indicator LED100 on the Terminal Transmitter should light red for about 1 second and then change to a flashing green. -
Page 16: Circuit Board Replacement
Installation Guide TD 92022EN H/U952T Terminal Transmitter Circuit Board Replacement Disconnect the power supply. Remove the antenna coax. Release the cover, see figure 4 on page 7. Lift off the screw connectors from the circuit board. Press the four holding clips (1) and release the circuit board as shown (2 and 3). Install the new circuit board in the case, make sure it clicks into the position. -
Page 17: Document History
20 A. Added FCC Compliance Statements. Changed references to system documents. Renamed old systems to Ascom Paging System. Removed section Connection to Slave Transmitter. Removed H/U989M Monitor Receiver. Removed H/U954 Power Amplifier. Minor text changes. 12 April 2013 Added note to 3.6 Connection of Supply Voltage... -
Page 18: Appendix A: Installation Of T952Sm/Fl Speech And Frequency Lock Module
Installation Guide TD 92022EN H/U952T Terminal Transmitter Appendix A: Installation of T952SM/FL Speech and Frequency Lock Module Board Description 952SM/FL LED100 R202 R203 R100 R211 R212 J100 2500 3125 Figure 6. Circuit Board for 952SM/FL. Connections, etc. J100 Screw terminal, for speech bus (SP-bus) if system bus cabling is not used. - Page 19 Installation Guide TD 92022EN H/U952T Terminal Transmitter Connection of SP/FL Bus via Twisted-Pairs NOTE: Not needed if the buses are connected to the Terminal Transmitter via modular bus cabling. • Connect SP-bus to connector J100 T952SM/FL J100 Connection to speech bus Figure 7.
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Page 20: Appendix B: Coaxial Connectors
Installation Guide TD 92022EN H/U952T Terminal Transmitter Appendix B: Coaxial Connectors This appendix applies to the following two brands of the TNC coax connector: • TESCH TNC-30C-TGN • Telegärtner J01010A0023 Note: The TNC coax connector images below shows the Telegärtner J01010A0023. When connecting the antenna cable to the Terminal Transmitter the TNC coax connector for soldering is preferable to use, but an TNC-UHF adapter can be ordered from your supplier if for example the antenna cable already is equipped with a PL259 (UHF) - Page 21 Installation Guide TD 92022EN H/U952T Terminal Transmitter Slide nut, clamp rings and gasket onto cable. Push shank cone between braid and cable sheath until stop (2). Insert cable into housing and screw on the nut. Solder the inner conductor (3). IMPORTANT: Overheating during soldering may damage insulation between inner conductor and shield resulting in negative effects on cable.
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