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sistor socket as in the drawing according to transistor type, remove
voltage before measurement.
b) Capacity- and Temperature Measuring Socket (poles “+“ and “-“)
In this socket discharged capacitors can be checked, observe correct
polarity. Make sure the connector pins are long enough to avoid
unreliable measurement.
For temperature measurement plug in type “K“ temp probes (NiCrNi),
observe the correct polarity.
Plug in adapter for function „SIG OUT“.
Attention!
The outer contacts are only for capacitance measurement, the inner
contacts are only! for temperature measurement & signal output
checking. Never confuse the sockets to avoid damage of the meter.
c) Rotary Function Switch = Measuring Function Switch (10)
Attention!
Never turn the rotary function switch during measurement, as there is
the risk of instrument damage and danger to life.
The different basic measuring ranges are selectable by turning the switch
(clockwise).
SIG OUT
= CMOS signal output - no function mode possible
mV
= millivolt AC/DC (milli = 10 exp. -3) no manual range selction
V
= Volt AC/DC - Auto-Range and manual range selection (R-H)
is possible
FREQ
= frequency measurement - Auto Range and manual range
selection (R-H) is possible
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• In the function mode R-H simply press button again to exit.
• In the function mode A-H (MIN-MAX and AVG) the R-H symbol (for
manual range setting) and the A-H symbol is displayed. After the
first push of the SET/R key the A-H symbol is set and will stop blin-
king. The R-H-symbol continues flashing to be able to set the
manual measuring range with buttons UP and DOWN. If the SET/R-
key is pressed again, the R-H symbol is fixed. You can commence
measurement. Another (third) push of the SET/R key discards the
function and the previous normal mode is restored.
• In the function modes REL, MEM, RCL and CMP, push SET/R button
several times to return to normal mode.
Another possibility to exit from these modes is either to press the
button FUNC, DC/AC or ON/OFF once or to move the rotary function
switch to an adjacent position (observe all safety rules!).
d) DC Ohm/AC (
)
Press this button to toggle between DC and AC when the rotary fun-
ction switch is set to resistance measurement, continuity check, to vol-
tage or current or to switch from resistance measurement to acoustic
continuity check.
e) UP/DOWN
Press UP or Down button to determine the reference value in the fun-
ction modes REL or CMP or to address the stored value in the modes
MEM or RCL (reference numbers). In the function mode R-H (= Range
Hold) you can set manually the measuring range with these buttons.
f) Back Light
To switch on/off the back light (the back light is LED operated to save
energy) push the yellow button. After 15 s the back light will auto-
matically extinguish.
4.4.3 Terminal and Switch Imprint
a) Transistor Socket hfe
The eight pole transistor terminal is lettered symmetrically with (E)
Emitter, (B) Base, (C) Collector. Insert the transistor pins into the tran-
