ADCMT 6244 User Manual

6243/44 DC Voltage Current Source/Monitor Operation Manual
2.3 Measurement Example
2-30
2.3 Measurement Example
2.3.1 Measuring a Diode
The following describes examples of measuring a diode’s forward voltage (VF) using a pulse current
source and its reverse leak current (IR) by DC voltage source.
NOTE:
1. Use a 4-wire connection to ensure an accurate forward voltage measurement.
2. For the 6243, use a shielded cable with driving guard to ensure an accurate measurement of leak current
below 1
 A.
For details, refer to Section 4.1, “DUT Connection.”
The measurement conditions are indicated below.
VF measurement: The forward voltage (VF) by applying a 100 mA current is measured using a pulse
in order to prevent a heat generation. The measurement is also made using a NULL
calculation in order to cancel errors caused by a voltage drop in the cable when
using the 2-wire connection.
IR measurement: The leak current is measured when a 20 V DC voltage is applied in the reverse
direction. It is measured with an integration time of 10 PLC in order to cancel
induced noise. Also, the measurement is made using NULL calculation in order to
cancel errors due to cable leak and CMV.
VF measurement conditions
Source mode
Pulse current
Base current
Limiter
Pulse width
Period
integration time
Measure delay
Measurement range
NULL
:
:
:
:
:
:
:
:
:
:
Pulse
100 mA
0 mA
1.5 V
5 ms
100 ms
1 ms
3 ms
VM Auto
ON
IR measurement condition
Source mode
Source voltage
Limiter
Period
integration time
Measurement range
NULL
:
:
:
:
:
:
:
DC
20 V
300 A
250 ms
10 PLC
IM Auto
ON

ADCMT 6244 Specifications

General

Brand	ADCMT
Model	6244
Category	Measuring Instruments
Language	English