Michell Instruments XZR200, User Manual

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XZR200 User’s Manual
Michell Instruments 9
INSTALLATION
3.5 RS232 Operation
With the RS232 outputs connected to a PC or any other RS232 compatible device the
user has the ability to access two modes of operation, continuous data streaming and
the menu screens.
Programs for communicating via PC serial RS232 are readily available.
3.6 RS232 User-Confi gurable Options
3.6.1 Menu Screens
If the XZR200 receives an ENTER command from the connected PC or device, it
automatically enters the password screen and stops outputting O
2
% and Td values.
After the correct password is input followed by the
ENTER
key, the menu screens are
accessed. The menu screens are primarily for diagnostics and information, although
there are user-con fi gurable options that may be changed. These are: the amount of
output fi ltering (averaging), the automatic O
2
calibration %, and the analog output
ranges. All three processes are further described below. The menu access password
may also be changed by the user, as shown below.
3.6.2 Changing the Menu Access Password
The password is factory set to ‘default’. However this may be changed to a user speci fi c
password.
1. Connect the XZR200 via the RS232 interface to the PC.
2. Press ENTER then enter your current security password.
3. Press
ENTER
to access the menu screen.
4. In the Con fi guration Menu (menu 2) enter ‘ 3 ’ to access the password
menu screen.
5. Enter the new password then press ENTER to save.
The new password is now stored in memory and is retained on power loss.
Pressing ESC returns the screen to the previous menu.