This user's manual is intended to help you to extract the best performance from the
VISIONTEK GSM Modem 81GR. All the features of the system including installation,
operational and programming procedures are explained in a lucid language and in a step-
by-step Manner.
Please go through this manual and keep it Handy for easy reference.
FEATURES
Non-transparent (error correction/data compression) data transmission at
1200/2400/4800/9600 bps programmable via a laptop or PC.
Wide supply voltage ranges ( 63.5 V to 370V AC )
RS-232 interface
Short Message Service and data compatible.
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1
Introduction
81GR GSM Unit – 1 No.
2.5dB Rubber Antenna -1No. Fixing Clamps 02 Nos.
User Manual – 1 No.
VISIONTEK GSM Modem 81GR package consists of the following:
The installation of 81GR is very simple. Please follow the step by step procedure as shown
in the diagram.
2
Installation
1
Step:1
Connect the antenna to the unit.
Note:
Two wire power supply input to modem, customer to take care of external body
earthing for safety purpose.
Step:2
Connect the RS-232 Cable to the device.
