Keithley 6487 Reference Manual

Model 6487 Reference Manual SCPI Reference Tables 14-11
:SOURce[1]
:VOLTage
:SWEep Sweep commands: 6
:STARt <NRf> Program start voltage: -505V to 505V. 0V
:STARt? Query start voltage.
:STOP <NRf> Program stop voltage: -505V to 505V. 10V
:STOP? Query stop voltage.
:STEP <NRf> Program step voltage: -505V to 505V. 1V
:STEP? Query step voltage.
:CENTer <NRf> Program center voltage: -505V to 505V. 5V
:CENTer? Query center voltage.
:SPAN <NRf> Program span voltage: -505V to 505V. 10V
:SPAN? Query span voltage.
:DELay <NRf> Set delay: 0 to 999.9999s. 1s
:DELay? Query delay.
:INITiate Arm sweep, put source in operate.
:ABORt Abort sweep, put source in standby.
:STATe? Query if sweep running: 1 = sweep in
progress.
:SOURce2 Path to control Digital I/O port: 8
:TTL Set I/O port value directly:
[:LEVel] <NRf> or
<NDN>
Specify 4-bit Digital I/O pattern (0 to 15). 15 (see
note)
[:LEVel]? Query output value.
:CLEar Clear I/O port (return output to TTL value).
[:IMMediate] Clear I/O port immediately.
:AUTO <b> Enable or disable auto-clear. OFF
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 14-5 (cont.)
SOURce 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%