Conrad VC630 Notice D'emploi page 17

measuring instrument switches to signal generator output, recognis-
able through the symbol „
b) Connect the black test lead to the "COM" measuring instrument
socket and the red test lead to the „mA•TEMP•
VC 650 or VC 670.
c) Although the bar graph appears under the display of the output fre-
quency, it is however not here as trend indicator.
d) Connect the test probes to the object to be measured and, when
necessary, operate the following buttons to set the output frequen-
cy:
Each operation of the "<" button (under "Enter") reduces the output
frequency by one step. Each operation of the ">" button (under "Enter")
increases the output frequency by one step.
Attention!
Do not short-circuit the signal generator output of the measuring instru-
ment, because the unit can be destroyed by this.
Connect no voltage to the signal generator output of the measuring
instrument, because the unit can similarly be damaged or destroyed.
Note !
Selectable special functions
The following sub-function is selectable by means of the "ENTER MENU"
button: "TIME". The sub-functions are described in more detail from
section 5.12.
5.12 General and "Reference value measurement" sub-function
a) General
The following chapters describe the special functions which are to
be seen at the top of the LCD display after the "ENTER MENU" but-
ton is pressed. According to the measuring instrument model, more
or fewer function symbols appear. When none of the special func-
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" at the bottom left of the display.
" socket of the
tions is selected, the selection disappears automatically after
approx. 6 s.
b) "Æ%" reference value measurement
The reference value measurement, represented by a delta and per-
cent symbol, enables measurements with reference to a previously-
set value. This set value appears then unchanged in the right-hand
sub-display. Adjacent and to the left, the difference value in per-
cent is indicated in the centre sub-display; in the main display the
instantaneous actual measured value appears. This function is par-
ticularly well-suited to resistance measurement. The display can be
set to "0000", meaning that resistance measurements can be car-
ried out in the low ohms range without the need to deduct the
resistance of the test leads from the measured value each time.
Reference value measurement is possible during voltage, current,
resistance, capacity and temperature measurement (temperature
with VC 650 and VC 670 only). Because "AUTO"-ranging is switched
off during reference value measurement, the desired measurement
range must be set manually prior to using this special function.
To set the reference value, proceed as follows:
Set the desired measurement range (by means of the "RANGE"
button). Measure the required reference value, e.g. a DC voltage of
12 VDC. Press the "ENTER MENU" button once. The menu appears
in the top line. Within 6 seconds, press the "ENTER MENU" button
once again. The first of the special functions, "Æ%", is set. The refe-
rence value "12 VDC" is displayed in the right-hand small display
(sub-display).
5.13 "MIN/MAX" value-capture sub-function
When the highest- (= "MAX") and the lowest- (= "MIN") occurring
measured value of a steadily-changing measured level is to be captured
then, during the measurement, press the "ENTER MENU" button. The
menu appears in the top line. The first symbol (for reference value
measurement) flashes. Using the "< >" button, move from symbol to
symbol. Press this button until the "MIN/MAX" symbol flashes. Finally
press the "ENTER MENU" button again. The flashing ceases and the
"MIN/MAX" value-capture is started.
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