Tektronix 2337, Инструкция по эксплуатации

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DM M DISPLAYS AND
MEASUREMENTS
Before connecting the DMM test leads to a unit-under-
test, select the desired measurement RANGE and
FUNCTION. When the value o f the quantity to be
measured is unknown, select the highest range first.
Decrease the range setting until the display reads between
10% and 100% o f the full-range value.
Resistance
The D M M m ay be damaged i f i t is operating in the
resistance m ode (SI fu n c tio n selected) and m ore than
5 0 0 V is applied between the + (red) and - (black)
inputs.
1. Rotate the RANGE/FUNCTION switch to any
SI range.
The m axim um safe in p u t voltage is 5 0 0 V (dc + peak
ac) between the + (positive) a n d — (negative) in p u ts
o r between the + an d — in p u ts to ground.
If an overrange condition exists, a " 1 " w ill be displayed
on the left side o f the LCD readout, followed by three
blank digits and a decimal point. Should this occur, select
the next higher RANGE value.
The 500 V DC and 350 V RMS AC RANGE w ill not
indicate an overrange condition when the input signal
exceeds the maximum allowable input voltage.
2. Connect the + (red) and — (black) leads across
the unknown resistance.
3. Select the best
SI
range to obtain maximum resolu­
tion w ith o u t overranging; read the resistance value on the
LCD readout.
RMS AC
I f the LC D readout exceeds 3 5 0 V, im m ediately
disconnect the test leads fro m the unit-under-test
to prevent possible in stru m e n t damage.
2237 Operators
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