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6.5.3.
oOaw
| = High resolution mode
AUTO UP
ranging
AUTO DOWN
ranging
measuring
current
Range
display
200.008 2
220.008.
2000.08 2 | 2200.08
20.0008k 2
22,0008:
200.0008k2 | 220.008,
2000.00k 2
Testing semiconductors
Semiconductors can be tested in the 22 2W function.
The output current of the PM2528 causes a voltage drop across the semiconductor under test. This voltage
drop is measured by the PM2528.
The display length corresponds in every range with a voltage of 2.4 Volt.
When the voltage drop across the semiconductor becomes higher than 2.4 Volt, the PM2528 indicates "OL"
{e.g. measuring diodes in reverse direction).
Select the INT, EXT or MAN start mode,
— Select function Q2W.
Select a range in the manual ranging mode, according to the desired measuring current (see table below).
Select the
HIGH RES mode or the normal resolution mode.
— Connect the semiconductor to the 0 and V-Qsocket.
o—t—_o
+$£=j%&->—oO
0
vQ
ft)
vQ
+
-
+
SS
REVERSE
FORWARD
Remarks
When only dashes are displayed (—-——.—— 92) press START INT or MAN.
The maximum output voltage at the terminals is 13V.
Vforward must be lower than 2.4V.
In the table below the ranges and measuring currents are listed.
The relative reference mode can be used (e.g. comparative measurements)
By measuring the forward voltage in all ranges (measuring currents), the characteristic of a diode can
easily be measured.
©
High resolution mode
Range
display length
measured voltage
measuring
max. reverse
at end of display
current
voltage
200,008
2
240.000.
24Vv
10mA
i3 Vv
2000.09
2
2400.08
2.AV = (2400.00mV}*
1mA
13.V
20.0000k 2
24.0008.
24V
1004 A,
13 V
200.000k 22
240,000
24V
10p A
i3 Vv
2000.06k 2
2400.06
2.4V = (2400.00mv)*
1A
45V
20.0000M 2
24.000
24V
100n A
45V
200.08M 2
240.08
24V
10n A
45v
2000:0M Q
2400.8
2.4V = (2400.0mv)*
InA
45V
* Direct reading in mV.
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