Welch Allyn TM 262 Auto Tymp - User Manual - Manual (Page 69)

Revised 4/11/08 5-3
RS-232 Interface
Introduction
The RS-232 Interface option provides the capability of transferring stored test results from the
instrument to an external computer or data collection device via an optically isolated serial
interface.
Only equipment that meet the requirements of IEC 60601-1-1 rating
may be connected to the Serial interface. Computers should meet the requirements of
IEC 60950-1 and be connected through an isolation transformer. Users should take
precautions to not touch the patient and equipment connected to the serial interface.
Operation
Press the DATA TRANSFER button to transfer test results stored in memory. During data
transfer, the message “DATA TRANSFER” will appear on the LCD screen.
Transferring during normal operation
During normal testing operation, pressing the DATA TRANSFER button will transfer all
stored test results sequentially. The test results are transferred with one record for each memory
location in the order in which they are stored. Any test results which have been erased will not
be transferred.
Transferring from memory pages
If the PAGE button is used to review individual test results stored in any of the eight memory
locations, the DATA TRANSFER button will transfer only the currently displayed stored test
results. There is one exception to this rule: If the last (most recent) test result is displayed, the
instrument assumes normal testing operation, and transfers all test results.
Other LCD screen messages
“INVALID SELECTION
This message appears if the DATA TRANSFER button is pushed during any of the following
circumstances:
• During presentation of an audiometric tone
• During a tympanometry test
• During a reflex test
• During Printing
NO DATA AVAILABLE
This message appears if the DATA TRANSFER button is pressed and no results are stored.
NOT AVAILABLE
This message appears if the DATA TRANSFER button is pressed and the RS-232 interface is
not installed.
WARNING !