h

RS-232 Pinouts

PIN

 

FUNCTION

 

 

 

2Rx (Computer to ZephyrExpress)

3Tx (ZephyrExpress to Computer)

4DTR (ZephyrExpress ready output)

5Ground

HOT TIP!

This port is configured as DTE, not DCE. This means pins 2 and 3 are wired like a computer instead of as a modem. You can plug in a standard modem, set for auto-answer, to remotely control ZephyrExpress for automated remote broadcasting. If you want to connect directly to a computer, youÕll need a null modem (a molded plug/jack with crossed wires, available from computer stores) or will want to cross pins 3 and 4 in the cable.

Parallel Port

The parallel port functions are not available as of ZephyrExpress software version 1.2.1. If you’re using a subsequent update that supports the parallel port, here’s how it’s wired:

Parallel Port

 

PI

FUNCTION

 

N

 

 

 

 

 

1

Ground

 

 

 

 

2

Output 2

 

 

 

 

3

Status Out

 

 

 

 

4

Output 3

 

 

 

 

5

N/C

 

 

 

 

6

Input 3

 

 

 

 

7

Input 0/Panic Dial

 

 

 

 

8

+5 volts 400 ma max.

 

 

 

PIN FUNCTION

9N/C

10Output 0

11Output 1

12N/C

13Input 2

14Input 1

15N/C

Inputs

All parallel port inputs are wired to accept either a voltage (up to +24 DC) or a closure to ground. Ground closures can be through switches or either pulled-up or open-collector logic outputs.

3-14 ZEPHYREXPRESS HARDWARE

Page 54 Page 56
Page 55
Image 55
Telos ZephyrExpress user manual RS-232 Pinouts, Parallel Port, Inputs, Output 12 N/C Input 15 N/C
Page 54 Page 56
Top Page Image Contents