E C O P H Y S I C S Operating Guide
CLD 780 TR / July 2000 56
5.2.2.6 (28) “SVCE“-window
The service window is only accessible with the service jumper in place. It is
activated by pressing the “YES“ key in MEAS mode. “SVCE“ appears in
the upper right hand corner of the display. This function enables the user
to check that the analog output and the keypad are functioning correctly.
Also in the rare case that it is necessary to perform a total reset of the
analyzer to factory default values, this can be accomplished from this
window.
1. “Recorder“: To check that the analog output is functioning correctly,
two options are available:
– “off“: Zero-point test; sets analog outputs to 0 V or 0 mA
– “max“: Full scale test; sets analog outputs to full scale i.e. 1 V, 10 V
or 20 mA depending on setting selected in window (4) under
“Mode“.
2. “Key Test“: To check functioning of keypad and display After pressing
the “YES“ key each pixel of on the display should illuminate.
Pushing the listed key produces the sign indicated:
.
→
“A“
CE
→
“B“
MENU
→
“E“
TEST
→
“F“
RANGE
→
“I“
SYS
→
“G“
CAL
→
“H“
NO
→
“C“
YES
→
“D“
If a number is pressed the same number should appear on the display.
Return to measuring function with “MEAS“.
3. “Byp. Pres“: If the instrument is fitted with the Bypass option, the set
value of the bypass pressure is entered here. If 0 is entered after a
Master Reset, the bypass regulator loop is disenabled. Once a non-
zero value has been entered, the bypass regulator loop cannot be
disabled unless a Master Reset is carried out, although the set value
may be changed if necessary.
Caution:
Access through the window described below is only permitted to
trained and authorized service professionals.
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