3-31
IM 701240-01E
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18
App
Index
Preparations for Measurements
• Types of Measurement Leads That Can Be Used on the 700987 Isolated
Logic Probe
Use the following measurement lead.
For measuring voltages of 42 V or more: Measurement lead for isolation logic (758917)
An alligator adapter (758922), alligator adapter (758929), or alligator clip (dolphin
type, 701954) is needed to make measurements.
Note
Do not alter the connection leads, as it may cause the leads from satisfying the specifications.
Connecting Logic Probes
702911, 702912, and 700986 Logic Probes
1.
Attach the accessory connection lead (IC clip or alligator clip) to the logic probe,
and lock the connector by clamping the lever inwards. To release the connection
lead from the logic probe, pull both levers outwards.
2.
On the 702911 or 702912, use the input switch on the probe to set the input
format to TTL level* or contact.*
*
TTL level: Set to 1 at a voltage greater than or equal to approximately 1.4 V. Contact:
Set to 1 when the input is shorted to the earth line.
700987 Isolated Logic Probe
1.
Connect the measurement lead to the input terminal of the logic probe.
2.
Set the input switch. The threshold level is set to 50 VAC
±
50% (Hi: 80 to 250
VAC, Lo: 0 to 20 VAC) and 6 V
±
50% (Hi: 10 to 250 VDC, Lo: 0 to 3 VDC)
when set to “AC” and “DC,” respectively.
Connecting the Logic Probe to the Logic Signal Input Connector
3.
Turn OFF the SL1400.
4.
Connect the end with the 26-pin connector (clamp filter with ferrite core, parts
No. A1190MN) of the logic probe to the logic signal input connector of the
SL1400.
5.
Turn ON the SL1400.
To the logic signal input connector
on the left side panel of the SL1400
Note
•
Each bit is displayed as “L level” when the logic probe is not connected to the instrument.
•
For logic probe specifications, see section 18.13.
•
The logic input display is turned OFF by default. For the procedure to turn ON/OFF the
display, see section 5.1.
3.12 Connecting Logic Probes