Com Port Password Security Feature - Teledyne 400E Instruction Manual

Operating Instructions

6.10.6. COM Port Password Security Feature

In order to provide security for applications where the Model 400E is being remotely
accessed via a modem or a public telephone line, the LOGON feature can be set to
require a password to before the instrument will accept commands. This is done by
turning on the SECURITY MODE (see Section 6.10.6).
Once the SECURITY MODE feature is implemented, the COM port has the following
attributes:
1. A password is required before the port will operate.
2. If the port is inactive for 1 hour, it will automatically LOGOFF.
3. Repeated attempts at logging on with incorrect passwords will cause subsequent
logins (even with the correct password) to be disabled for 1 hour.
4. If not logged on, the only command that is active is the '?'.
5. The following messages will be given at logon.
LOG ON SUCCESSFUL - Correct password given
LOG ON FAILED - Password not given or incorrect
LOG OFF SUCCESSFUL - Logged off
To logon to the model 400E analyzer with SECURITY MODE feature ON type:
940331 is the default password. This password can be changed to any number from
0 to 999999 by the variable RS232_PASS. To change the password enter the
command:
Where N is any numeral between 0 and 9.
140
LOGON 940331
V RS232_PASS=NNNNNN
Model 400E Ozone Analyzer
Instruction Manual
P/N 04316 Rev: B