User's Guide

TECHNICAL DATA ON GLT2701/2/3/4
POWER SOURCE : 9-Volt Battery (Applied to the battery clip)
CURRENT CONSUMPTION : Maximum 45mA at 8VDC supply (Only when
transmitting).
STANDBY CURRENT : 10 uA (typical)
TRANSMISSION MODES
CONTINUES : Transmits as long as the channel is activated. Minimum
transmission time is 640 msec.
BURST (B version) : Transmits one 640 msec burst for each channel activation,
even if channel is activated for less than 640msec.
BATTERY MONITOR : LED flashes at 1 Hz, during transmission, when
battery voltage is at 6.5 volts (flat 9 volt battery).
NORMAL OPERATION : The LED flickers at 12.5Hz during normal operation.
OPERATING FREQUENCY : 27.195MHz (Other frequencies available on 27.045,
27.145 and 27.455 MHz)
CARRIER FREQUENCY TOLERANCE : Crystal controlled 30 parts per million.
OPERATING TEMPERATURE RANGE : -5 to +50°C
RADIATED R.F. POWER OUTPUT : 2.23µW (CKC test result)
ANTENNA : Built in 50mm long dilec rod.
TYPE OF EMISSION : Narrow-band-width Frequency Modulation (FM).
FREQUENCY DEVIATION LIMITING : 1600 - 1900 Hz non-return to zero.
MODULATION FREQUENCY : 1.8 kHz (0.56 ms/bit) (15% tolerance).
SPURIOUS TRANSMISSION : At least -60dB/carrier
NECESSARY BAND WIDTH : + - 2.5 kHz
DIGITAL CODING SYSTEM : Microcontroller based 96-bit word.
CODE COMBINATION : 4,294,967,296
DIGITAL CHANNELS : 1, 2, 3 or 4 channels. The type of membrane label
determines the number of channels. Customers can fit
custom-made membrane labels.
DIMENSION : 81 X 56 X 24 mm
WEIGHT : 51 grams excluding battery
USABLE RECEIVERS : GLR … series
USEABLE OPERATING RANGE : up to 250 metres depending on building structure.