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234 Chapter 7
C:\Spk\Ref\RefGuideRevE\Cnfgscrn.fm
Configuration - Screens and Control Fields
Control Fields on the Configuration Screens
Flow Control
The flow control field is used when sending or receiving serial data.
• None disables the Xon/Xoff function.
• Xon/Xoff lets the Test Set “talk/listen” to the transceiver to alter the
rate of the data being sent.
• Hardware uses the serial port’s RTS and CTS lines to transfer data
at high baud rates.
NOTE
Do not turn flow control on (set Flow Cntl to Hardware in the I/O
CONFIGURE screen) for the serial port until you have a device
attached to the port that can respond to the flow control
communications.
Example: You have a printer attached to SERIAL PORT 9. Before you
run any IBASIC software (for example, the RFTOOLS program), you
must make sure that the printer is properly connected and that its
power is turned on.
Operating Considerations
This setting is retained when the instrument is turned off.
Baud rates of 38400 and above must use Hardware flow control.
When in remote mode (Remote Mode field is set to On), this field is
inaccessible.
Screen(s) Where Field is Present
I/O CONFIGURE
Frame Clock Output
This field selects the frame clock signal to send to the FRAME CLOCK
OUT connector.
Screen(s) Where Field is Present
INSTRUMENT CONFIGURE