GT864 Quad / PY User Manual Revision 1.
Important information This technical description contains important information for start up and use of the GT864 Quad / PY. Read it carefully before you start working with the GT864 Quad / PY. The warranty will be void should damage occur due to non-compliance with these instructions for use. We cannot accept any responsibility for consequential loss. We cannot be held responsible for material loss or personal injury that is due to incompetent use or non-compliance with the safety instructions.
Before putting a device into operation, it has to be clarified, whether this device or module is meant for the field of application. In case of doubt ask specialists or the manufacturer of the device. Please note that we are not responsible for any errors in usage or connection. Therefore we cannot accept any responsibility for consequential loss. Devices which operate with >35 Volt have to be connected by a specialist.
Table of Contents Important information ......................................................................................................................... 2 Safety Instructions .............................................................................................................................. 2 1 2 Mechanical Description ................................................................................................................. 7 1.1 Overview ........................................
.1.3 Connections of components to GT864 QUAD / PY Terminal............................................... 22 5.1.4 Network and Subscription .............................................................................................. 23 5.2 How to install the modem..................................................................................................... 23 5.2.1 Power supply ................................................................................................................
Table Overview Table Table Table Table Table Table Table Table Table Table Table Table Table 1: Pin Description .................................................................................................................... 10 2: RJ11 Pin and Signals Description ........................................................................................... 10 3: Example for the Analogue Input ............................................................................................
1 Mechanical Description 1.1 Overview The pictures below show the mechanical design of the GT864-QUAD/PY Terminal along with the positions of the different connectors and mounting holes. The GT864-QUAD/PY Terminal case is made of durable PC/ABS plastic.
Please note the following Mounting holes positioned at two of the corners make it possible to securely bolt the modem into your application. Keypad, display, microphone, speaker and battery are not part of the modem. The SIM card is mounted in the modem, accessible by the user under a lid without any tools. The pins and electrical characteristics or the modem’s various connectors are described in “2. Electrical Description” Information about the antenna connector is found in “2.
2 Electrical Description The modem uses the following industry standard connectors: RJ11 6-way (power connector) Mini USB (audio- / IO- connector) SIM card reader FME male coaxial jack (antenna connector) Sub-D female socket, 9 pin (RS232 serial port) 2.1 Power Connector An RJ11 6-way connector, as shown and described below, serves as a means of supplying and controlling DC power to the modem. The supply voltage, VCC, required by the modem is in the range 5V - 36V DC.
Pin 1 2 3 4 5 6 Description VCC ADC_IN (GT864-PY only) HR_IN TO_IN DIG_OUT (GT864-PY only) GND Table 1: Pin Description PIN Signal Direction Limits Description 1 VCC Input 5 – 36V Positive power input, DC 2 ADC_IN or not connected Input - Analogue Input in GT864 PY - No connection in GT864 Quad version Active high control line used to switch off HR_IN Input 5 – 36V VIH > 5V, VIL < 0.
2.1.2 Digital Output – GT864 PY Variant only switched voltage is VIN; high side switch max. Output 400mA short circuit protected ESD protected under full control of embedded application The following command has to be used to initialize and to set the digital output: AT#GPIO=3,1,1 output switched on AT#GPIO=3,0,1 output switched off 2.
2.2.1 GT864 Quad with Audio connector The USB connector supports the connectivity of a headset or any other audio equipment using the analogue microphone and loudspeaker interface of GT864-QUAD Terminal. The table below describes the signals on the USB connector.
low level: 0...1V high level: 12…30V ESD protected under full control of embedded application GT864 PY Pin Layout for Mini USB connector: The GT864 Terminals with a hardware revision of G or higher have an internal GSM module that is upgraded from a GE864 to a GE865. The Python enabled version of the GT864 terminal family has some special considerations that should be considered when using the newer module. Fortunately the Python script interpreter should be 100% compatible between the modules.
Output Power: 2 Watt Peak (Class 4) 1 Watt Peak (Class 1) GSM900/850 GSM1800/1900 The antenna that the customer chooses to use should fulfil the following requirements: Quad Band GSM 850/900 MHz GSM 1800/1900 MHz Depending by frequency band(s) provided by the network operator, the customer shall use the most suitable antenna for that/those band(s) 80 MHz in EGSM 900, 70 MHz if GSM 850, 170 MHz in DCS, 140 MHz PCS band Frequency range Bandwidth Gain > 1.
PIN Signal Direction Voltage levels Description 4 DTR Input > + 4V < 0.8 V Data terminal ready 5 GND - 0V Ground connection 6 DSR 7 RTS 8 CTS 9 RI > + 4V <-4V > + 2,4V Input < 0.8 V > + 4V Output <-4V > + 4V Output <-4V Table 7: Electrical characteristics of the serial port signals Output Data set ready Request to send Clear to send Ring indicator 2.5.
modem when activated for 0.2 seconds. The DTR line must be deactivated prior to switching off the modem to ensure it switches off (powers down) correctly. Data Set Ready (DSR) An active DSR signal is sent from the modem to the application (DTE) to confirm that a communications path has been established. DSR has two modes of operation, settable using the AT command AT&S. Data Carrier Detect (DCD) DCD indicates that the DCE is receiving a valid carrier (data signal) when low.
3 Operation 3.1 Switching ON the modem There are two ways to switch on the modem, once power is applied. assert TO_IN to high level for > 1s activate the RS232 control line DTR The modem is fully operational after 4 seconds. Logging onto a network may take longer than this and is outside the control of the modem. The modem can be configured to start up at the time power is applied by permanently tying power connector signals TO_IN (pin 4) and VCC (pin 1) together.
3.2 Switching OFF the modem There are two ways to switch off (power down) the modem as described below: use the AT#SHDN command; DTR permanently to low (0,8V) HR_IN to high level for 1s < t < 2s A delay of up to 10s is experienced as the modem logs off the network 3.3 Operating states / LEDs 3.3.1 Power up LED (green LED in the middle) The modem has a green power up LED, as depicted below, which is used to indicate various operating states. These states are described in following table.
4 Power consumption The following table shows you the power consumption of the GT864 Quad / PY in different modes: [mA] @ 5V [mA] @ 12V [mA] @ 24V [mA] @ 32V GT864 off 0,075 0,520 1,770 2,580 GT864 idle mode 52 22 16 14 GT864 with voice call 203 86 41 40 Table 9: Power consumption of the GT864 Quad [mA] @ 5V [mA] @ 12V [mA] @ 24V [mA] @ 32V GT864 off 0,080 0,557 1,768 2,596 GT864 idle mode 61 26 17 17 GT864 with voice call 207 87 43 42 Table 10: Power consumption of t
4.2 General precautions The GT864-QUAD/PY Terminal as a stand alone item is designed for indoor use only. To use outside it must be integrated into a weatherproof enclosure. Do not exceed the environmental and electrical limits as specified in “Technical Data”. Avoid exposing the modem to lighted cigarettes, naked flames or to extreme hot or cold temperature. Never try to dismantle the modem yourself. There are no components inside the modem that can be serviced by the user.
Like any mobile station, the antenna of the modem emits radio frequency energy. To avoid EMI (electromagnetic interference), you must determine whether the application itself, or equipment in the application’s proximity, needs further protection against radio emission and the disturbances it might cause. Protection is secured either by shielding the surrounding electronics or by moving the antenna away from the electronics and the external signals cable.
5 Installation of the modem This chapter gives you advice and helpful hints on how to integrate the GT864-QUAD/PY Terminal into your application from a hardware perspective. Please read the information given in “Safety and Product Care”, page 10 and then read the information in this section before starting your integration work. 5.
5.1.4 Network and Subscription Before your application is used, you must ensure that your chosen network provides the necessary telecommunication services. Contact your service provider to obtain the necessary information. If you intend to use SMS in the application, ensure this is included in your (voice) subscription. Consider the choice of the supplementary services 5.2 How to install the modem 5.2.1 Power supply Use a high-quality power supply cable with low resistance.
the antenna needs to be grounded or not. Your local antenna manufacturer might be able to design a special antenna suitable for the application. 5.3.2 Antenna type Make sure that you choose the right type of antenna for the modem.
Shadowing is a form of environmental attenuation of radio signals caused by hills, buildings, trees or even vehicles. This can be a particular problem inside buildings, especially if the walls are thick and reinforced. Multi-path fading is a sudden decrease or increase in the signal strength. This is the result of interference caused when direct and reflected signals reach the antenna simultaneously. Surfaces such as buildings, streets, vehicles, etc., can reflect signals.
6 Technical Data Product features: Quad-band EGSM 850/900/1800/1900 MHz GSM 850/900 Power class 4 (2W) GSM 1800/1900 Power class 1 (1W) Control via AT commands according to GSM 07.05, 07.07 and proprietary Telit Serial Port Multiplexer GSM 7.10 SIM Access Profile Supply voltage range: 5 – 36 V/DC TCP/IP stack access via AT commands Sensitivity: o -107 dBm (typ) @ 850/ 900 MHz o -106 dBm (typ) @ 1800/ 1900 MHz Overall dimensions (excluding connectors): 77 x 67 x 26mm Weight: ca.
Circuit switched data transmission: Asynchronous transparent circuit switched Data (CSD) up to 14,4 kbps Asynchronous non-transparent circuit switched Data (CSD) up to 9,6 kbps V.
7 Abbreviation Abbreviation Explanations CBM Cell Broadcast Message CBS Cell Broadcast Service CSD Circuit Switched Data DCE Data Circuit Terminating Equipment DTE Data Terminal Equipment DTMF Dual Tone Multi Frequency EFR Enhanced Full Rate EMC Electro-Magnetic Compatibility ETSI European Telecommunication Standards Institute FR Full Rate GPRS General Packet Radio Service GSM Global System for Mobile Communication HR Half Rate HSCSD High Speed Circuit Switched Data ITU-T ME
8 Mark of Conformity The GT864-QUAD/PY Terminal will carry the following certificates: 29
9 Service and Support To contact customer support please use the contact details below: Customer Support CEP AG Raiffeisenallee 12b 82041 Oberhaching Germany E-mail: support@cepag.de or Tel. +49-89-450 292 – 11 Information about CEP AG, products and accessories is available on the following web site: http://www.cepag.de. Please contact us via e-mail if you miss anything on the web and we will provide it to you personally via e-mail.
10 Documentation Change Log Revision Date Changes Rev. 1.4 21.03.2014 Update Document Layout Rev. 1.5 26.03.
