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9009 Industrial Dual-Block Calibrator
User's Guide
8.1.2
8.1.2.1
8.1.2.2
8.1.2.3
8.1.2.4
30
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Setup
Before operation the serial interface must first be set up by programming the
BAUD rate and other configuration parameters. These parameters are pro-
grammed within the serial interface menu. The serial interface parameters
menu is outlined in Figure 3 on page 20.
To enter the serial parameter programming mode first press "EXIT" while
pressing "SET" and release to enter the secondary menu. Press "SET" until the
display reads "Par". Press "UP" until the serial interface menu is indicated
with "SErIAL". Finally press "SET" to enter the serial parameter menu. In the
serial interface parameters menu are the BAUD rate, the sample rate, the duplex
mode, and the linefeed parameter.
Baud Rate
The baud rate is the first parameter in the menu. The display will prompt with
the baud rate parameter by showing "bAUd". The current baud rate value is
displayed. The baud rate of the 9009 serial communications may be pro-
grammed to 300, 600, 1200, 2400, 4800, or 9600 baud. The baud rate is
pre-programmed to 2400 baud. Use "UP" or "DOWN" to change the BAUD
rate value. Press "SET" to set the BAUD rate to the new value or "EXIT" to
abort the operation and skip to the next parameter in the menu.
Sample Period
The sample period is the next parameter in the menu and prompted with
"SPEr". The sample period is the time period in seconds between temperature
measurements transmitted from the serial interface. If the sample rate is set to 5
then the instrument transmits the current measurement over the serial interface
approximately every five seconds. The automatic sampling is disabled with a
sample period of 0. Adjust the period with "UP" or "DOWN" and then use
"SET" to set the sample rate to the displayed value.
Duplex Mode
The next parameter is the duplex mode indicated with "dUPL". The duplex
mode may be set to half duplex ("HALF") or full duplex ("FULL"). With full
duplex any commands received by the thermometer via the serial interface are
immediately echoed or transmitted back to the device of origin. With half du-
plex the commands are executed but not echoed. The default setting is full du-
plex. The mode may be changed using "UP" or "DOWN" and pressing "SET".
Linefeed
The final parameter in the serial interface menu is the linefeed mode. This pa-
rameter enables ("On") or disables ("OFF") transmission of a linefeed charac-
ter (LF, ASCII 10) after transmission of any carriage-return. The default setting
is with linefeed on. The mode may be changed using "UP" or "DOWN" and
pressing "SET".
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