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User/Installation Guide
GSM STU EV

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Summary of Contents for BT Redcare GSM STU EV

  • Page 1 User/Installation Guide GSM STU EV...
  • Page 2 CE MARKING The GSM* STU* carries the CE approval marking in accordance with the CE Marking Directive 93/68/EEC. The GSM STU EV complies with the following European Directives:- 73/23/EEC (Low Voltage Directives) by compliance with safety specifications:- EN60950 User Safety...
  • Page 3: Table Of Contents

    Table of Contents INTRODUCTION Static Sensitive Devices Decommissioning Procedure GSM STU EV OVERVIEW Specifications GSM STU Compatibility 3GSTU Replacement Redcare GSM Connection Safety Statement Siting Power Supply Line Compatibility INSTALLATION Training Courses Pre-installation Requirements CPE Number Connecting The Telephone Line And Earth...
  • Page 4: Introduction

    Important: If the GSM STU EV is in service, the Alarm Receiving Centre (ARC) must be contacted to decommission it before it is power cycled. You must follow these decommissioning instructions when there is a need to change the alarm system settings: 1.
  • Page 5 GSM STU EV Overview...
  • Page 6: Gsm Stu Ev Overview

    The GSM STU EV system is designed to provide a backup communications path for the single landline connection to a premises. This allows alarms to continue to be transmitted even in the event of a landline communications failure.
  • Page 7: Specifications

    350 mA peak @12 V DC (Required rating of power supply) 160 mA mean @12 V DC (For standby battery capacity) Ripple/noise: 200 mV p-p max. Low battery threshold (detected by GSM STU EV): 10.8 V ± 0.2 V Pin alarm inputs: Logic High = +3.5 V to +30 V Logic Low = -0.5 V to +0.8 V...
  • Page 8: Gsm Stu Compatibility

    FIRE ENCLOSURE in accordance with the requirements of BS EN 60950. It is essential that the GSM STU EV is installed so that there is a gap of at least 5mm between it and any other part of the host equipment (excluding the mounting face). If any part of the host apparatus uses or generates voltages in excess of 250 V rms or dc, obtain advice from a competent telecommunications safety engineer before you install the GSM STU EV.
  • Page 9: Siting

    2. Place the phone where the GSM STU EV is to be installed, switch it on and observe the signal strength. If the signal strength is weak, try to find a better position for the GSM STU EV. If required, higher gain extension antennas and extension cables are available at extra cost.
  • Page 10: Line Compatibility

    REN values for each apparatus should not exceed 4.0. A BT provided telephone is assumed to have a REN value of 1.0 unless otherwise marked. If the GSM STU EV is used with an MCD, the...
  • Page 11 Installation...
  • Page 12: Installation

    The CPE (Customer Premises Equipment) number of the GSM STU EV must match that on the redcare service order allocated to the premises. The CPE number can be found on the outer GSM STU EV packaging as well as on the GSM STU EV circuit board itself (see below).
  • Page 13: Connecting The Telephone Line And Earth

    RF pickup. Connecting the Telephone Line and Earth The TNV circuit cover of the GSM STU EV should not be removed whilst the unit is connected to the PSTN or Private Wire network.
  • Page 14: Antenna

    The Block Terminal provides an insulation displacement connection (IDC) block for the incoming phone line. No connections, other than those made by BT, should be made to this IDC block. The GSM STU EV should be connected to the screw terminals as shown.
  • Page 15 Try to route the RF cable away from any other wiring within the box to reduce the likelihood of interference. Carefully connect the RF cable to the GSM module on the GSM STU EV. The connector is a micro-miniature co-axial (MMCX) screened type and is easily damaged.
  • Page 16: Mains Fail

    Connect +12V to the terminal labelled V+ and 0V to the terminal labelled 0V. This power wiring must be less than 3m in length and use wires having core areas of at least 1mm2. The GSM STU EV will take a peak current of 350mA from the 12V supply, when the GSM transceiver is in operation.
  • Page 17 Page 16 Function Function Pin 1 Alarm Input 1 Pin 9 Not Used [+12V on 3GSTU] Pin 2 Alarm Input 2 Pin 10 Signal Ground [0V supply on 3GSTU] Pin 3 Alarm Input 3 Pin 11 ATS Test (via LK3) Pin 4 Alarm Input 4 Pin 12...
  • Page 18: Plug-In Compatibility Link (Lk3)

    Some newer alarm panels use pin 11 as the ATS Test function on the plug-in connectors, whilst older panels may use pin 16 as alarm 8. GSM STU EV is supplied with an NVM (IC10) programmed and fitted to enable ATS Test mode (see page 18).
  • Page 19: Control Output

    Page 18 Control Output The Control Output can be used as a general purpose output which is controlled by the Alarm Receiving Centre. It may be used for various functions including the remote resetting of alarm panels. Additionally, this relay can be used in conjunction with the Line Fault relay to indicate discrete communication path fails at the protected premises (in this mode, the Control Output relay is no longer controlled by the ARC) For plug-in installations, Control Output connections are made automatically when the unit is fitted in the host alarm...
  • Page 20: Ats Test

    The GSM STU EV is supplied ready to connect to the Public Switched Telephone Network (LK1 is not fitted). If the GSM STU EV is to be connected to a Private Wire (RedDIRECT) a suitable link must be fitted in the position marked LK1.
  • Page 22: Nvm

    The NVM can be re-programmed after careful removal using an IC extractor. If the unit has already been commissioned, see the note on page 3. The GSM STU EV and alarm system must be totally powered down (switch off mains power and disconnect the battery) before fitting or removing the NVM.
  • Page 23: Remote Programming

    Page 22 Leave LK2 in this position for three seconds. During this time the GSM STU EV stores the "NVM present" setting in its EEPROM so that it can re-start correctly should a complete power fail occur in the future.
  • Page 24: Pin Alarm Polarity

    Each channel can be programmed to be "Positive Applied" or "Positive Removed". This polarity is set to a default state in the EEPROM (see page 21). It can also be set in the NVM, or the GSM STU EV can "learn"...
  • Page 25 In some cases, particularly GSM STU EV plug-in installations, it may be difficult to perform the Learn Procedure because not all the alarm pins can be set to their normal state for the GSM STU EV to learn. This problem may be resolved by...
  • Page 26 Programming The NVM...
  • Page 27: Programming The Nvm

    Page 26 Programming The NVM The following procedure should be followed when programming NVMs for the GSM STU EV using a Scantronic 7200 or 7300 NVM programmer. Apply power to the programmer (12V DC or 12V AC.) and set the on/off switch to position "0". Insert the NVM in the socket marked ‘COPY NVM’.
  • Page 28 Page 27 Press in sequence: The address display changes to: 0 0 3 2 If the Control Relay is to be energised on power up press …………………………….….. If the Control Relay is to be not energised on power up press …......…. If the Line Fault Relay is to be energised on fault, press …………………………………..
  • Page 29 Page 28 Press…. to advance the address display to: 0 0 3 4 Press …………………………………………..............….. Press ………………………………………..............……... (This disables serial data, and enables GSM operation) Press in sequence: The address display changes to: 0 0 3 5 Use keys to set the bits required for the options detailed: 00000000 Line fail asserted when both paths fail.
  • Page 30 Page 29 Press in sequence: The address display changes to: 0 0 6 0 Use keys to set the polarity of alarm pins 1 to 8. Pressing the numbered key changes the setting of the polarity from 0 to 1, or 1 to 0. A state of 1 means positive applied and a state of 0 means positive removed.
  • Page 31 9, 10, 11, T and F respectively are enabled. A state of 1 means the pin is enabled and a state of 0 means the pin is disabled. The NVM is now completely programmed. Set the power switch to 0, remove the programmed NVM and insert it in the GSM STU EV at position IC10 (see page 21).
  • Page 32 Status Indicators...
  • Page 33: Status Indicators

    Page 32 Status Indicators The status indicators are to be found in two distinct groups: STU Status Indicators: GSM Status Indicators: Three LEDs in the bottom Four LEDs in the top left Left corner of the circuit board corner of the circuit board. Indication Normal state 1 (yellow)
  • Page 34: Stu Status Led Meanings

    Landline has failed (GSM signalling starts) Green intermittent flash: Landline is up and GSM STU EV commissioned. Green slow flash: The GSM STU EV has not been commissioned by the ARC. Green permanently off: GSM STU EV is not powered.
  • Page 35 Yellow medium flash: The GSM STU EV is in Security Mode. While the GSM STU EV is in Security Mode, it will indicate Line Fault OK on both the plug-in connector (SK2 pin 15) output and on the Line Fault relay. Security Mode will be cancelled if the GSM STU EV is reset (i.e.
  • Page 36 These two LEDs indicate the GSM radio signal strength. The signal strength is adequate when both are illuminated. If they do not light when the unit is in operation the signal strength is too low and the GSM STU EV will send a PIN 8 alarm over the PSTN.
  • Page 37: System Commissioning

    Note 2: If an MCD is fitted it will disconnect the telephone or data device connected through it during commissioning. Apply power to the alarm panel and the GSM STU EV and observe the STU Status indicators. The green STU Status LED will slow flash (on for 2.5 seconds approx.
  • Page 38: Warranty

    This signifies that the GSM STU EV is commissioned and there are no outstanding alarms. Affix the redcare gsm sticker to the outside of the box containing the GSM STU EV: this will indicate that the GSM device is active inside.
  • Page 39: Troubleshooting

    GSM unit. For this reason the SIM card in the GSM unit cannot be changed or used in any other installation. If a GSM STU EV is suspected of being faulty, it is not possible to substitute the unit for a different one without the help of BT redcare.
  • Page 40 Page 39 Line Earth Off Data Value Type Calling Hook Hook Bit Value Line Atten. Atten. Address 33 PSTN 0 dB 0 dB 00100001 PSTN 0 dB -3 dB 00000001 PSTN 0 dB -6 dB 00110001 PSTN 0 dB -9 dB 01000001 PSTN -3 dB...
  • Page 41 NVM leg bent under. e) Power down, insert the NVM and re-apply e) The NVM has been removed power to the GSM STU EV. Ask the ARC to from the STU. commission the STU again. f) Configure the STU to use the plug-in f) NVM fitted for the first time.
  • Page 42 Red STU Status NVM program error. GSM disabled in NVM, in this case, it LED5 flutter flash. may still be possible to up the GSM STU EV on the landline only. Re-program the NVM. Red STU Status AC fail alarm in NVM i) Re-program the NVM.
  • Page 43 Page 42 Symptom Possible Causes Possible Solution Green GSM The GSM unit has Power cycle the GSM STU EV and try to Status LED2 failed to initialise. commission it again. permanently on. No GSM signal a) The antenna may be a) i) Check antenna connection.
  • Page 44: Disposal

    Product disposal instructions for business users: Business users should return the product to the freepost address below: Freepost RLXS-ETYY-ELCU Rebound Electronics UK Ltd. Basingstoke Hants RG24 8FL Only return the product sub assembly (not the complete alarm panel) to BT redcare for recycling.
  • Page 45 Never compromise To find out more about Redcare: 0800 800 628 call us free on redcare@bt.com or email * Calls are free to this number from BT landlines and BT payphones. However, they are not free to call from mobile phones the costs will vary between service providers.

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