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Communication With a PC
Dump Instrument Info (Option 1)
Set Date and Time (Option 2)
N-595
Data can be sent from the N-595 to a PC by using a data cable with a Null modem
connector installed between the instrument and the PC. Select the ASCII Comm
protocol (see Communication Protocol on page 107). Data sent to the PC is serial,
8 data bits, no parity, 1 stop bit XON/XOFF flow control and is space delineated.
When the connection is made, real-time data will be sent to the PC. A new line of
data will be sent every 2 seconds. The information presented will be the same as
described in Real-Time Printouts later in this section.
Holding the Control key on the PC keyboard and pressing "C" twice can access an
interactive mode. When the interactive mode has been accessed, real-time serial
output is stopped and serial input is accepted. Printouts can be requested or the
date and time can be adjusted via the PC. The PC monitor will display 5 options:
1. Dump Instrument Info
2. Set Date and Time
3. Dump Trend
4. Dump Error Log
5. Exit Interactive Mode
This allows Instrument Info to be printed or displayed on the PC screen. This
option is intended for Nellcor's field service personnel. Instrument Info is a single
line of data, which includes software version, CRC number, and total operating
time.
When the instrument is shipped from the factory, the date and time are set to the
time zone by the manufacturer. If the battery has been removed or disconnected,
the time clock will not reflect the actual date and time. After battery power has
been restored, it will be necessary to reset the date and time.
When option 2 has been selected, the date and time can be changed via the PC.
The format for date and time is DD-MMM-YY HH:MM:SS. Move the cursor
under the value to be changed and enter the new value.
Data Port Interface Protocol
115
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