Ceilometer CT25K
CT25K-U059en-2.1 User’s Guide
17
The CT25K is equipped with a separate grounding screw on the measurement
unit flange for external earthing (see Figure 2-4).
CONNECTION TO A SOLID EARTH GROUND AT THE
INSTALLATION SITE IS MANDATORY FOR ADEQUATE
LIGHTNING AND TRANSIENT PROTECTION.
2.7 Connection of Maintenance Terminal
Any terminal or PC with serial interface and terminal emulation program can
be used for operation and maintenance of the CT25K Ceilometer. A standard
Maintenance Terminal option is offered including the following components:
• Palmtop Computer PSION3
• RS cable (RS-232 Interface)
• Terminal Cable CT3840
• Technical Manuals for the Palmtop Computer
Setting up PSION3
To set up PSION3 for communication for the first time the following steps are
needed. These settings must be done with the RS cable attached to PSION3.
The PSION3 has two normal Mignon AA batteries, which enable operation
for twenty hours.
1. Connect the RS cable to the PSION3 computer.
2. Press the System icon to start the computer.
3. Press the "Menu" key to get the menu on the screen.
4. Select the "Install" from the "Apps" menu.
5. Use cursor keys to move to the "Disk" line and to the "C" disk.
6. See that the "File: Name" line has "Comms.app" . If the line does not
have it add it by typing and press ENTER.
A new icon "Comms" is now installed and can be seen on the System screen.
The terminal emulation is ready.
7. Choose "Comms" from System screen and press ENTER to start it.
8. Press the "Menu" key and set "Port" from "Special" menu as follows:
Baud rate 2400
Data bits 7
Stop bits 1
Parity Even
Ignore parity Yes
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