Table of Contents
Advertisement
8. UNIT PARAMETERS
RS-232 Signal Conversion
The LOW SPEED DATA unit is equipped with an Interface Assembly Board that
provides the necessary conversion for standard EIA RS-232/CCITT V.24
Transmit and Receive Data levels. The daughter board contains sixteen RS-232
drivers and receivers to provide the level conversion. The parameters for these
devices is shown in the following table:
PARAMETER
RS-232 Transmitter
Output Voltage Swing
Input Logic Threshold Low
Input Logic Threshold High
RS-232 Receiver
Input Voltage Swing
Input Threshold Low
Input Threshold High
Table 2: RS-232 Conversion Parameters
RS-232 Signal Support
The LOW SPEED DATA unit supports the following EIA RS-232 signals for all
ports:
•
Transmit Data (TD)
•
Receive Data (RD)
•
Signal Ground (SG)
Each port is also equipped with a Control Lead labeled as Control In and Control
Out. These user defined signals can be configured for various applications as
outlined in the Unit Description section of the manual.
Copyright GE Power Management 2001
Min
Typ
Max
±5.0
±8.0
1.4
0.8
2.0
1.4
±30
1.3
2.4
2.0
1.8
342-86400-447PS
Issue 1
March 1994
Page 21
Unit
Volts
Volts
Volts
Volts
Volts
Volts
Advertisement
Table of Contents
