Testing Diodes; Connections; Range; Figure 2-10 Diode Testing - Keithley 2016 User Manual

Testing diodes

With a Model 2016, you can measure the forward voltage drop of general-purpose diodes and
the zener voltage of zener diodes. To test diodes, press SHIFT then
range, connect the diode, and take a reading from the display.
NOTE

Connections

Connect the diode leads to the INPUT HI and INPUT LO terminals on the Model 2016. The
test current flows from the INPUT HI terminal as shown in
Figure 2-10
Diode testing
LOCAL
POWER
LOCAL
POWER
Note: Source current flows from the INPUT HI to INPUT LO terminals.

Range

You can set the test current range from the front panel. The choices are 1mA, 100µA, and
10µA. The factory test current setting is 1mA. To set the test current, do the following:
1.
2.
The diode test measures voltages on the 3V range for the 1mA test current and the 10V range
for the 100µA and 10µA ranges. If a reading is more than 10V, the Model 2016 displays the
"OVERFLOW" status message.
Diode test has a non-selectable reading rate of MEDium (1 PLC).
Model 2016
REM STEP SCAN CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
TALK
LSTN
SRQ
SHIFT
TIMER HOLD TRIG FAST MED SLOW REL FILT AUTO ERR
MATH T H D dBm dB CONT
Ω2 Ω4
SHIFT DCV ACV DCI ACI
DELAY HOLD LIMITS ON/OFF TEST CAL
EX TRIG TRIG STORE RECALL FILTER REL
SAVE SETUP RS232
CONFIG HALT GPIB
SOURCE MEAS
STEP SCAN DIGITS RATE
THD
Model 2016
REM STEP SCAN CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
TALK
LSTN
SRQ
SHIFT
TIMER
HOLD TRIG FAST MED SLOW REL FILT AUTO ERR
MATH T H D dBm dB CONT
Ω2 Ω4
DCV ACV ACI
SHIFT DCI
DELAY HOLD LIMITS ON/OFF TEST CAL
EX TRIG TRIG STORE RECALL FILTER REL
SAVE SETUP
CONFIG HALT GPIB RS232
SOURCE MEAS STEP SCAN DIGITS RATE
THD
Press SHIFT then .
Use the and keys to scroll through the three test current selections.
SENSE
INPUT
Ω 4 WIRE
HI
CH9 CH10 MATH
REAR
4W
350V 1000V
BUFFER
STAT !
PEAK PEAK
2016 THD MULTIMETER
LO
500V
PERIOD TCOUPL
PEAK
INPUTS
FREQ TEMP
RANGE
F R
AUTO
FRONT/REAR
3A 250V
AMPS
RANGE
EXIT ENTER
SENSE
INPUT
Ω 4 WIRE
HI
CH9 CH10 MATH
REAR
4W
350V 1000V
BUFFER STAT !
PEAK PEAK
2016 THD MULTIMETER
LO
500V
PERIOD TCOUPL
PEAK
INPUTS
FREQ
TEMP
RANGE F R
AUTO
FRONT/REAR
3A 250V
AMPS
RANGE
EXIT ENTER
Basic Measurements
, set the test current
Figure 2-10.
General-Purpose
Diode
Zener
Diode
2-33