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GMC-I Gossen-Metrawatt GmbH
19
Δ
Operating Mode, Reference Value
REF
.
The delta operating mode allows for the display of refer-
enced values. Normalized reference values are automati-
cally correlated to a previously selected reference value, i.e.
the reference value is subtracted from the current mea-
surement value.
An individual reference value must be entered in the
“Setup” menu for each of the y measurement functions: V,
A,
Ω
,
μ
F, Hz and
°
C.
➭
Select the reference value for the corresponding mea-
surement function in the Setup menu:
SEt
↵
V
rEF
vALUE
↵
V
unit x
↵
XXXXXX y
VU
↵
.
➭
Select the measuring range manually.
➭
In order to enter the
Δ
operating mode, simultaneously
press the
ESC|FUNC
and
MAN|AUTO
keys.
The current measurement value is then displayed, normal-
ized in reference to the stored reference value.
Alternatively,
a measurement value can be assigned as a refer-
ence value
by briefly pressing the
ESC|FUNC
and the
MAN|AUTO
keys simultaneously in the
Δ
mode. This refer-
ence value remains active until the above described opera-
tion is repeated (
MAN|AUTO
), or until the
Δ
mode is exited.
After exiting and re-initializing the
Δ
mode, the reference
value selected in the setup menu is active.
➭
Exit the
Δ
operating mode by pressing and holding the
ESC|FUNC
key.
FUNC
simultaneous
Reference Value
Measurement Value
Basic Display = Meas. Value – Ref. Value
-2
.
90000
3
.
00000 0
.
10000
MAN/AUTO