Using Auto-Diode For Diode Tests; Table 2-13 Rotary Switch Position Allowing Auto-Diode Tests; Table 2-14 Auto-Diode Voltage Thresholds - Agilent Technologies u1273a User Manual

2 Making Measurements

Using Auto-diode for Diode Tests

Using Auto-diode for Diode Tests

N O T E
N O T E
62
Set up your multimeter to test diodes as shown in
Figure 2- 20. Probe the test points, and read the display.

Table 2-13 Rotary switch position allowing auto-diode tests

Legend Default function
Diode test
Auto
The auto-diode function will help you test both forward- and reverse-bias
directions simultaneously. You do not need to change the measuring
direction to identify the diode's status.

Table 2-14 Auto-diode voltage thresholds

Forward voltage
Primary display
OL or <0.3 V or >0.8 V
Within 0.3 V to 0.8 V
OL
The open condition will not be alerted as OL on both directions if the
auto-diode function is used.
The primary display shows the forward- bias voltage value.
The reverse- bias voltage value is shown in the secondary
display.
• GOOD is shown briefly (along with a single beep) on the
secondary display if the diode is in a good condition.
• NGOOD is shown briefly (along with two beeps) if the
diode is out of the thresholds.
Function when
Auto-diode test
Reverse voltage
Secondary display
–OL or >–0.3 V or <–0.8 V
–OL
Within –0.3 V to –0.8 V
U1273A/U1273AX User's Guide
is pressed
Diode status
Good No Good
✘
✔
✔