TDS2CMA Communications Module
TDS1000/2000-Series Digital Oscilloscope User Manual
141
7. If you receive only part of the printer file, try these remedies:
a. Lengthen the timeout for the external device
b. Make sure the printer is set to receive a binary file, not a
text file.
RS-232 Conventions
There are processing conventions that are specific to the RS-232
interface, such as transferring binary data, processing break signals,
reporting RS-232 I/O errors, and checking command status.
Transferring Bi nary Data
To use the RS-232 port to transfer binary data to the oscilloscope, set
up the interface as follows:
H Use hardware flagging (RTS/CTS) whenever possible. Hardware
flagging guarantees no data loss.
H All eight bits of binary data contain meaningful information. To
make sure that all eight bits are received or transmitted, configure
the external RS-232 device to re ceive and transmit eight-bit
characters (set the RS-232 word length to eight bi ts).
Reporting RS-232 I/O Errors
Errors are reported when there is a probl em with parity, framing, or
input/output buffer overruns. To report errors, the oscilloscope posts
an event code. When an error occurs, the oscilloscope discards all
input and output and wait s for a new command.
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