Pelco C538M manual Setting the Baud, Control Card, Pelco Manual C544M 2/98

3.1.1 Setting the Baud

NOTE: The operating baud must match the baud rate set in the .SCP Communications File for the CM9760-CC1.

Bauds of 2400, 4800, 9600, and 19200 are available. The communication protocol uses eight data bits, one stop bit, and even parity.

The baud is set using DIP switches 1 and 2 according to Table A.

Table A. Baud Settings

DIP Switch 2	DIP Switch 1	Baud
ON	ON	2400
ON	OFF	4800
OFF	ON	9600
OFF	OFF	19200

3.2 CONTROL CARD

NOTE: The VCRs connected to a single microprocessor must be in the same brand and model. Brands and models required should be specified at the time of order.

The CM9760-IRC can have up to four control cards installed.

Each control card has four microprocessors.

Each microprocessor controls two DB9 output connections.

Each DB9 output controls up to four VCRs (refer to Figure 6).

This enables one Pelco CM9760-IRC to have infrared control of 128 VCRs (that is, four control cards multiplied by four microprocessors per card multiplied by two DB9 outputs per microprocessor multiplied by four VCRs per DB9 output equals 128 VCRs).

2DB9 OUTPUTS PER MICROPROCESSOR

CM9760-IRC

UP TO 4 CONTROL CARDS PER IRC

4 MICROPROCESSORS PER CARD

4 VCRs PER DB9 OUTPUT

CM9760-CC1

CONTINUES UP TO

32 VCRs PER CARD

IR LED CABLES

Figure 6. The Number of VCRs Controlled by One Control Card

8 Pelco Manual C544M (2/98)