Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 102)

Model 9110TH NOx Analyzer Operating Instructions
Teledyne Analytical Instruments 82
4.9. SETUP  PASS: PASSWORD FEATURE
The 9110TH/M provides password protection of the calibration and setup functions to
prevent unauthorized adjustments. When the passwords have been enabled in the PASS
menu item, the system will prompt the user for a password anytime a password-
protected function (e.g., SETUP) is selected. This allows normal operation of the
instrument, but requires the password (101) to access to the menus under SETUP. When
PASSWORD is disabled (SETUP>OFF), any operator can enter the Primary Setup
(SETUP) and Secondary Setup (SETUP>MORE) menus. Whether PASSWORD is
enabled or disabled, a password (default 818) is required to enter the VARS or DIAG
menus in the SETUP>MORE menu.
There are three levels of password protection, which correspond to operator,
maintenance, and configuration functions. Each level allows access to all of the
functions in the previous level.
Table 4-10: Password Levels
Password Level Menu Access Allowed
Null (000) Operation All functions of the MAIN menu: TEST, GEN, initiate SEQ , MSG, CLR
101 Configuration/Maintenance Access to Primary Setup and Secondary SETUP Menus when
PASSWORD is enabled.
818 Configuration/Maintenance Access to Secondary SETUP Submenus VARS and DIAG whether
PASSWORD is enabled or disabled.
To enable or disable passwords, press the following menu button sequence:
SAMPLE A1:NXCNC1=100PPM NOX=XXX.X
< TST TST > CAL SETUP
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
Toggle this
button to
enable, disable
password
feature
SETUP X.X PASSWORD ENABLE: OFF
OFF ENTR EXIT
SETUP X.X PASSWORD ENABLE: ON
ON ENTR EXIT