Keithley 6485 User Manual

13-10 DISPlay, FORMat, and SYSTem Model 6485 Picoammeter Instruction Manual
The queue for the :SYST:KEY? query command can only hold one key-press. When
:SYST:KEY? is sent and Model 6485 is addressed to talk, the key-press code number for
the last :SYST:KEY command is sent to the computer. The value is -1 if a :SYST:KEY
command has not been sent since the last time the unit was placed in remote.
Figure 13-3
Key-press codes
RANGE
AUTO
CONFIG/
LOCAL
MENU
POWER
RANGE
EXIT ENTER
HALT
RATEDIGITS
STORE RECALL
MEDN AVG MX+B M/X+B LOG REL ZCHK ZCOR
COMM DISP
TRIG
LIMIT AZERO
SAVE SETUP
1
2
345 678
16
11
12
13
23 32 15
1431 24
26 19 28 21 30
18
17
27 20 29 22

Keithley 6485 Specifications

General

Model	Keithley 6485
Category	Picoammeter
Input Impedance	>10^14 Ohms
Voltage Burden	<200µV
Accuracy	0.4% of reading
Voltage Source Range	Not Applicable
Voltage Source Resolution	Not Applicable
Voltage Source Accuracy	Not Applicable
Interface	IEEE-488
Power Requirements	100V to 240V AC, 50/60Hz
Dimensions	89 mm high x 214 mm wide x 369 mm deep (3.5 in x 8.4 in x 14.5 in)