Keithley 6485 User Manual

Model 6485 Picoammeter Instruction Manual DDC Emulation Commands D-11
Figure D-2
U1 Status word
PREFIX
DATA STORE
1 = Full
B (Reading Mode)
0 = Picoammeter
1 = Buffer Reading
2 = Maximum Reading
3 = Minimum Reading
N (Zero Correct)
0 = Off
1 = On
Q (Data Store Rate)
0 = Conversion Rate
1 = One reading per second
2 = One reading per 10 seconds
3 = One reading per 60 seconds (1 minute)
4 = One reading per 10 minutes
5 = One reading per hour
6 = Trigger Mode
7 = Disabled
P (Digital Filter)
0 = Off
1 = Off
2 = Repeat filter on, where filter size = n
485MNBQJPPPP
STATUS (DATA CONDITION) FORMAT
J (Digits returned)
4 = 3-1/2 digits resolution
5 = 4-1/2 digits resolution
6 = 5-1/2 digits resolution
7 = 6-1/2 digits resolution

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)