Midian CAD-POCSAG, Руководство пользователя

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HARDWARE INSTALLATION
Pin 1 – Ground
– Connect to ground in the base station.
Pin 2 – B+ - Connect to a 10-15 VDC source in the base station.
Pin 3 – PTT Output – Connect to the PTT input of the radio. This open collector provides a ground during PTT.
Pin 5 – Data Output – Connect to the Data Input of the radio which provides a flat frequency response.
Pin 9 – COR Input –
Connect to a point in the Squelch or CTCSS circuit that changes logic level when carrier is
received. A radio whose squelch circuit provides a logic low or logic high can readily turn the COR transistor on
and off. If the point that this lead is hooked to only makes a minute change in voltage, it will be necessary to
adjust the values of the input resistors to cause the COR transistor to change states.
The USB connector is P3.
The following are the pins used on the Female DB-9 connector P2 (RS-232).
P2-2 – TX Output
P2-3 – RX Input
P2-4 – Data Terminal Ready
P2-5 – Ground
P2-6 – Data Set Ready
P2-7 – Clear To Send
P2-8 – Request To Send
HARDWARE ALIGNMENT
Output Level: To set the output level, command the CAD-POCSAG to send a lengthy page by typing a long
message and sending to multiple pagers. Set R78 for a deviation of ±4.5 kHz at the transmitter.
R78: Output Level