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Keithley 6485 User Manual

Keithley 6485
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Model 6485 Picoammeter Instruction Manual DISPlay, FORMat, and SYSTem 13-9
A) SYSTem:PRESet
Returns the instrument to states optimized for front panel operation. SYSTem:PRESet
defaults are listed in the SCPI tables in Section 15.
B) SYSTem:TIME:RESet
Resets the absolute timestamp to 0 seconds. The timestamp also resets when power is
cycled, or after the instrument is on for 99,999.99 seconds. The TRACe:TSTamp:FORMat
command is used to select the absolute timestamp. See Section 6 (Buffer) for details.
C) SYSTem:POSetup <name>
Parameters RST Power-up to *RST defaults
PRESet Power-up to SYSTem:PRESet defaults
SAVx Power-up to setup stored in memory (x = memory location
0, 1 or 2)
The *RST and SYSTem:DEFaults are listed in the SCPI tables in the Section 15. A setup
is saved in memory using the *SAV command. See Section 12 (Common Commands) for
details.
D) SYSTem:VERSion
Read the version of the SCPI standard being used by Model 6485. Example response mes-
sage: 1996.0.
E) SYSTem:KEY <NRf>
Parameters 1 = CONFIG/LOCAL key 17 = MENU key
2 = MEDN key 18 = COMM key
3 = AVG key 19 = DISP key
4 = MX + B key 20 = TRIG key
5 = M/X + B key 21 = HALT key
6 = LOG key 22 = DIGITS key
7 = REL key 23 = RATE key
8 = ZCHK key 24 = Cursor left arrow key
9 = ------- 25 = -------
10 = ------- 26 = SAVE key
11 = RANGE up arrow key 27 = SETUP key
12 = AUTO key 28 = STORE key
13 = RANGE down arrow key 29 = RECALL key
14 = ENTER key 30 = LIMIT key
15 = Cursor right arrow key 31 = AZERO key
16 = ZCOR key 32 = EXIT key
This command is used to simulate front panel key presses. For example, send the follow-
ing command to simulate pressing the MEDN key: SYSTem:KEY 2. The key-press
codes are also shown in Table 13-3.

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Keithley 6485 Specifications

General IconGeneral
ModelKeithley 6485
CategoryPicoammeter
Input Impedance>10^14 Ohms
Voltage Burden<200µV
Accuracy0.4% of reading
Voltage Source RangeNot Applicable
Voltage Source ResolutionNot Applicable
Voltage Source AccuracyNot Applicable
InterfaceIEEE-488
Power Requirements100V to 240V AC, 50/60Hz
Dimensions89 mm high x 214 mm wide x 369 mm deep (3.5 in x 8.4 in x 14.5 in)

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