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Keithley 6487 Reference Manual

Keithley 6487
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Model 6487 Reference Manual Limit Tests and Digital I/O 8-17
LIN4MOD (Line 4 Mode):
ENDOFTST (End of Test) — With this mode, Model 6487 will pulse the EOT line
when the test is finished. Use with catagory register component handlers.
/BUSY and BUSY — Pulls line 4 LO (/Busy) or HI (Busy) while the test is in pro-
cess. Use with catagory pulse component handlers.
Arm layer configuration menu
To access the menu, press CONFIG and then TRIG. Use the RANGE keys to scroll to the
ARM menu.
ARM-IN — Select the “start of test” option:
IMM (Immediate) — Test starts when LIMIT key is pressed.
/STEST — Test starts when the handler pulls the SOT line of the Digital I/O
low.
STEST — Test starts when the handler pulls the SOT line of the Digital I/O
high.
BSTEST — Test starts when the handler pulls the SOT line of the Digital I/O
either high or low.
klqb The other arm-in control sources are seldom used with component handlers, but
are available.
Performing limit tests
Step 1. Configure test system
As previously explained, testing the system could be as simple as connecting a DUT to the
Model 6487.
Step 2. Configure measurement
Configure the Model 6487 for the desired measurement as covered in the previous sections
of this manual.
Step 3. Configure limit tests
Configure the Model 6487 for the limit tests as explained in “Limit test configuration,
page 8-16.
Step 4. Start testing process
To enable the limit tests, press the LIMIT key—the testing process will start when LIMIT
is pressed. The testing process can be terminated at any time by again pressing the LIMIT
key.

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Keithley 6487 Specifications

General IconGeneral
TypePicoammeter/Voltage Source
Current Measurement Range20 fA to 20 mA
InterfacesGPIB, RS-232
Voltage Burden< 200 µV
Input Impedance>10^14 Ω
Power100 V / 120 V / 220 V / 240 V
Basic Current Measurement Accuracy0.4%

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