Keithley 6487 Reference Manual

14-4 SCPI Reference Tables Model 6487 Reference Manual
:SOURce2? Query output pattern value. √
:STATe <b> Enable or disable limit 1 test. OFF √
:STATe? Query state of limit 1 test. √
:FAIL? Return result of limit 1 test: 0 (pass) or 1 (fail). √
:CALCulate2 8
:LIMit2 Limit 2 Testing: √
:UPPer Configure upper limit: √
[:DATA] <n> Set limit: -9.99999e20 to 9.99999e20. 1.0 √
[:DATA]? Query upper limit. √
:SOURce2 <NDN> or
<NRf>
Specify 4-bit I/O “fail” pattern (0 to 15). 15 (see
note)
√
:SOURce2? Query output pattern value. √
:LOWer Configure lower limit: √
[:DATA] <n> Set limit; -9.99999e20 to 9.99999e20. -1.0 √
[:DATA]? Query lower limit. √
:SOURce2 <NDN> or
<NRf>
Specify 4-bit I/O “fail” pattern (0 to 15). 15 (see
note)
√
:SOURce2? Query output pattern value. √
:STATe <b> Enable or disable limit 2 test. OFF √
:STATe? Query state of limit 2 test. √
:FAIL? Return result of limit 2 test: 0 (pass) or 1 (fail). √
:CLIMits Composite limits:
:CLEar Clear I/O port and restore it back to
SOURce2:TTL settings.
[:IMMEDIATE] Clear I/O port immediately.
:AUTO <b> When enabled, I/O port clears when INITiate
is sent.
ON
:AUTO? Query auto-clear state.
:PASS Define “pass” Digital I/O output pattern:
SOURce2 parameter values:
<NRf> = 0 to 15 Decimal format
<NDN> = #Bxxxx Binary format (each x = 1 or 0)
= #Hx Hexadecimal format (x = 0 to F)
= #Qxx Octal format (x = 0 to 17)
Table 14-1 (cont.)
CALCulate command summary
Command Description
Default
parameter
Ref
Section SCPI

Keithley 6487 Specifications

General

Type	Picoammeter/Voltage Source
Current Measurement Range	20 fA to 20 mA
Interfaces	GPIB, RS-232
Voltage Burden	< 200 µV
Input Impedance	>10^14 Ω
Power	100 V / 120 V / 220 V / 240 V
Basic Current Measurement Accuracy	0.4%