Chapter 5: Installation
EST3X Technical Reference Manual 141
Half-footprint space on the back of the CAB6 backbox (see Figure 25
on page 113 for the footprint location)
When connecting a CDR-3 to a serial port that is shared with a PT-1S printer,
you must connect both devices using an IOP3A.
IOP3A isolator module
The IOP3A isolator module provides two RS-232 connections that allow you to
connect a CDR-3 for coded tone output when a PT-1S printer is connected to the
control panel. See Table 30 for power and installation specifications.
Table 30: IOP3A power and installation specifications
Voltage
Standby current
24 VDC nominal
60 mA
Voltage
Current
12 VDC
10 mA max.
Half-footprint space on the back of the CAB6 backbox (see Figure 25
on page 113 for the footprint location)
Note: All unsupervised RS-232 connections must be in the same room, within 20 ft. (6.1 m), and
enclosed in conduit or equivalent protection against mechanical injury.
Configuring a CDR-3 for coded tone output
Refer to the Figure 39 wiring diagram on page 143 for a CDR-3 coded tone
output application. If your control panel setup includes a PT-1S printer, refer to
the Figure 40 wiring diagram on page 144. Refer to the information below for
configuration settings.
Configuration settings
• Set the CDR-3 parity DIP switch S1-6 to ON (no parity) as shown in Figure 38
on page 142.
• Refer to the CDR-3 Bell Coder Installation Sheet (P/N 3100023) for other
settings and specifications.
• For a combined CDR-3 and PT-1S printer application:
- Set the CDR-3 baud rate DIP switches S1-7 and S1-8 (see Figure 38),
and the PT-1S baud rate to the same rate. The recommended rate is
2400 bps.
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