Tektronix 47E5A

DM44 DISPLAYS AND MEASUREMENTS I
Except for the TIME and 11TIME functions, the DM44 is independently usable anytime the oscilloscope is turned on.
The TIME and 1/TIME functions are discussed in the Oscilloscope Applications and Measurements section of this manual I
under Delayed or Mixed Sweep Measurements.
RESISTANCE
The meter may be damaged by attempting to
measure voltage
if the meter is in the resistance
mode of operation (OHMS FUNCTION button push-
ed in) and the applied voltage is in excess of 120 V
rms.
1. Push in the OHMS FUNCTION button and the
20 MO RANGE button. See Fig. 8.
2. Connect the + and COM leads to the unknown
resistance.
3. Reduce the range, using the following table, until a
proper readout is obtained .
TABLE 2
Resistance Ranges
RANGE
READOUT MEASUREMENT
20 MO 20. 00-02 .00
20
MO-2 MO
2 MO 2. 000-0 .200
2 MO-200 kO
200 kO 200.
0-20.00
200 kO-20 kO
20 kO
20.
00-02.00
20 kO-2 kO
2 kO
2.000-0.200
2 kO-200 0
2000 200. 0-000.0
2000-00
A blinking readout on any range, when connected to
any unknown resistance, indicates an overrange condi-
tion and a need to select a higher range.
A
blinking readout, when meterleadsaredisconnected
is normal.
20
475A/DM44 Operators
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