6-4
Troubleshooting and Customer Support
CESAR 1312 (E)
Dressler
®
HF-Technik GmbH
Front Panel Display (LCD) Not Lit
The front panel display should operate as soon as the front panel
ON/OFF
switch is turned on. Verify that the:
1. Front panel
ON/OFF
switch is in the
ON
position.
2. Input line voltage is 230 VAC (187 VAC to 253 VAC), 1
φ
.
Communication Problems
Several factors can cause communication problems:
•
Poor grounding
Ensure that the communication cable shield is properly grounded. Ensure
that the generator and the matching network are properly grounded
according to the instructions in
and the
installation section of the matching network manual.
•
Improper cabling
Ensure that each of the communication cables matches the specifications
listed in the associated sections of
•
Incorrect baud rate (RS-232 Host port only)—
Ensure that the baud rate used by the host computer and the baud rate
set in the CESAR generator are the same (see
).
•
Incorrect or corrupt data packet
Verify that the data packet has been set up correctly (see
•
Commands transferring too fast
Ensure the commands are sent to the CESAR generator at a rate less
than 1 command every 50 milliseconds (20 commands per second) if you
are not using the recommended handshaking protocol described in
“Creating an Ideal Communications Transaction” on page 4-48
.
Capacitor Failure
The CESAR generator is compatible with a Dressler Variomatch or a matching
network with the same control functions and electronic topology. Several
factors could cause the Variomatch capacitors to fail:
Содержание CESAR 1312
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