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CHAPTER 4: DEFINITIONS OF 7500 OPTIONS
Parity
Configurations: Asynchronous DCE, Asynchronous DTE
Data Protocols: X.25, Mode 2, Mode 3
The 7500 ignores parity received from your terminal in Local Mode except for the xon and xoff flow
control characters. If a terminal connected to the 7500 requires parity to display Local Mode CMD
prompts, match the parity of the 7500 with your terminal.
The Parity setting of the 7500 only affects local mode. The 7500 never adjusts Parity of data
transmitted to or from the network in data mode.
To set this option from an attached terminal do the following:
Type set parity value (for example, set parity odd).
1 .
2 .
Change your data terminal's Parity to match this value. (See your data terminal's operating
manual for instructions. )
You can also change the Parity option setting of the 7500 (when the Autoadjust option is on) by
pressing the [
] key, then typing AT.
BREAK
Rec.flow (Receive Flow Control)
Configurations: Asynchronous DCE, Asynchronous DTE
Data Protocols: X.25, Mode 3
This option determines which method is used to control the flow of data from the 7500 to your
data terminal.
When you select xon/xoff, your data terminal sends the 7500 an xoff character when it is not ready
to receive data. When it is ready to receive data, it sends an xon character to the 7500 to restart the
flow of data. This setting is appropriate for most users.
Select eia, if your data terminal uses the Request-to-Send lead to indicate whether it is ready to
receive data. When it is not ready, your data terminal turns off Request-to-Send. When it is ready to
receive data, it turns Request-to-Send on.
When you select off, your data terminal has no way to control the flow of data from the 7500.
66
Asynchronous DCE and Asynchronous DTE
Option Values For Parity
Front Panel
Without Help
With Help
0
SPACE
1
MARK
2
EVEN
3
ODD
CMD
Factory Value
Mode
DCE
DTE
space
X
X
mark
even
odd
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