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„- - - -"
logic level measurement between high and low
„PASS"
indication for LMT function (VC 670 only), meaning that the
measured value is somewhere between the previously-set
lower and upper limits
„hfe"
hfe (amplification) parameter indication during transistor
test measurements
„O.L"
"Overload" = measured value too great, ie. measurement
range limit exceeded
„
„
signal generator TTL output symbol (VC 650 and VC 670
only)
„
„
symbol for battery replacement
+
–
„°C"
degrees Celsius unit of measurement during temperature
measurements with optional temperature adapter (VC 650
and VC 670 only)
„°F"
degrees Fahrenheit unit of measurement during tempera-
ture measurements with optional temperature adapter (VC
650 and VC 670 only)
„->I-"
symbol for diode test
„-I(-"
symbol for capacity measurements of bipolar and unipolar
capacitors
„
"
symbol for acoustic continuity test
all remaining symbols stand for the various units of measurement:
AC
= alternate unit
DC
= direct unit
mV
= millivolt (exp.-3)
10
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V
A
Hz
kHz
k½
M½
pF
nF
uF
4.4
4.4.1 General
All parameters can be changed/set by means of the various buttons on
the instrument. According to the instrument model, the following set-
tings are possible:
"TRIG" (all three DMMs), „
(VC 670 only), "RANGE" (manual range setting), "AC/DC" with „½
"HOLD", "POWER" (on/off), "ENTER MENU" (confirmation button), „"
(measurement function button via "ENTER"), "mA TEMP A" (measure-
ment function button to the right of "ENTER"); "TEMP" (VC 650 and VC
670 only), "< >" (selection-aid button), „HzhfeLogic
ment function button to the left of ENTER); „
and VC 670 only)
4.4.2 TRIG
a)
= volt (unit of electrical potential difference)
= ampere (unit of electrical current)
= hertz
= kilohertz (exp.3)
= kilohm (exp.3)
= megohm (exp.6)
= picofarad (pico = exp. -12)
= nanofarad (nano = exp.-9)
= microfarad (micro = exp.-6)
Configuration of buttons and functional description with
button operation
„ lighting (VC 670 only), „
TRIG button
This button is required for frequency measurement to switch from
positive triggering to negative triggering. Positive triggering "+"
means that the signal to be measured is captured on its rising
„ tone signal
",
„ (measure-
„ and "Logic" (VC 650
11
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