Teledyne 300M, Instruction Manual, Page: 50 / 123

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A
4.7 Setting the Analog Output Offset
In order to permit the analyzer to connect to a wider variety of strip chart recorders and other
instruments, the analog output of the Carbon Monoxide readings can be adjusted by up to
±
500 mV for 0-5 V range (or
±
10% of current analog output range) in software. The default
output offset is 0 mV. To change it, press SETUP-MORE-DIAG, press NEXT until D/A
CALIBRATION is displayed and press ENTR. Press CFG to enter the D/A configuration menu.
Use the NEXT and PREV buttons to select the desired analog output and press SET . Enter a
value of from -500 mV to +500 mV (other ranges will ratio accordingly), followed by ENTR to
accept the change, or EXIT to leave it unchanged. The offset will be reflected immediately on
the strip chart recorder or other instrument.
4.8 Setting the RS-232 Baud Rate
To set the baud rate for the RS-232 channel, press SETUP-MORE-COMM-BAUD . Press 300 ,
1200 , 2400 , 4800 , 9600 , or 19.2 followed by ENTR to accept the new baud rate, or EXIT to
leave the baud rate unchanged.
4.9 Setting the Analyzer I.D.
Each analyzer may be programmed with a unique I.D. number that appears on all RS-232
messages. To set the analyzer I.D., press
SETUP-MORE-COMM-ID . Enter a 4-digit number
from 0000 to 9999, followed by ENTR to accept the new I.D., or EXIT to leave the I.D.
unchanged. If changed, the new I.D. number will appear on all RS-232 reports from this
analyzer.
4.10 Disabling the Calibration Password
Normally, operators are required to enter the calibration password when doing a manual
calibration via the
CALZ , CALS , or CAL buttons. To allow calibration without entering the
password, press SETUP-PASS and set it to OFF, and then press ENTR to accept the change, or
EXIT to leave it unchanged. To enable the calibration password, set the variable to ON.
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