User Manual

2.6 Connecting Logic Probes
39
Logic Probe Usage Procedures
Range Table
Range Digital input (Threshold value) Contact input (Detecting resistance value)
1.4 V 1.4 V±0.3 V
more than 1.5 kΩ
less than 500Ω
opened (Output L)
shorted (Output H)
2.5 V 2.5 V±0.4 V
more than 3.5 kΩ
less than 1.5 kΩ
opened (Output L)
shorted (Output H)
4.0 V 4.0 V±0.5 V
more than 2.5 kΩ
less than 8 kΩ
opened (Output L)
shorted (Output H)
Using Model 9327 and 9320-01 Logic Probes
Connect to the measurement
object
When measuring digital signals
(Digital input)
1 Connect the IC clip leads to the logic
probe.
2 Set the input selector to DIGITAL.
3 Connect the alligator clip to the circuit
ground.
4 Use the threshold value selector to select
the threshold value.
5 Connect the IC clips to the measurement
object.
When measuring the contact signal
(Contact input)
1 Connect the Alligator clip leads to the logic
probe.
2 Set the input selector to CONTACT.
3 Connect the alligator clips to the measure-
ment object.
IC clip leads
Alligator clip leads
1
3
3
4
Alligator clip lead
5
Connect to the measurement
object
GND
Input selector
1
2
Input selector
2
Connect to the
LOGIC receptacle
Connect to the
LOGIC receptacle
Threshold value selector