Teledyne 300 Instruction Manual page 29

2.1.6 RS-232 interface
The Teledyne API CO Analyzer features an RS-232 interface which can output the
instantaneous and/or average CO data to another computer. It can also be used as a
command and status channel to allow another computer to control the Analyzer. Refer to
Figure 1.3 for details on using the RS-232 interface. Tips on connecting the RS-232 port
can be found in Appendix B.
2.1.7 Password protection
The Teledyne API CO Analyzer provides password protection of the calibration and
setup functions to prevent incorrect adjustments to the Analyzer. There are three levels
of passwords which correspond to operator, supervisor/maintenance, and analyzer
configuration functions. When prompted for a password, any of the valid passwords can
be entered, but the CPU will limit access to the functions allowed for that password level.
Each level allows access to the functions of all the levels below plus some additional
functions. Table 2.1 lists the password levels and the functions allowed for each level.
Password
No password
Operator (512)
Setup (818)
Supervisor
(101)
THE OPERATOR AND SETUP PASSWORDS CAN BE
DISABLED. TO DO THIS, ENTER SETUP-PASSWORD AND
TOGGLE "ON" TO "OFF". PUSH "ENTR" AND THE
P/N 02163G Teledyne API Model 300 CO Analyzer Instruction Manual - Page 23
PASSWORD LEVELS
Level
0
1
2
3
TABLE 2.1
NOTE
PASSWORDS WILL BE DISABLED
Functions Allowed
TEST
MSG
CLR
CALZ
CALS
CAL
SETUP
SETUP-VARS
SETUP-DIAG
ALL