Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Model 2635/2636
System SourceMeter
®
Specifications
Specifications are subject to change without notice.
Page 4 of 8
SPEC-2635_2636 Rev. A / September 2007
Specifications Category
Specifications
Over Temperature
Protection
Internally sensed temperature overload puts unit in standby mode.
Voltage Source Range
Change Overshoot
300 mV + 0.1% of larger range (typical)
• Overshoot into a 200 K
load, 20 MHz BW
Current Source Range
Change Overshoot
< 5% of larger range + 300 mV/Rload + 60 nA (typical)
• See CURRENT SOURCE OUTPUT SETTLING TIME for
additional test conditions.
PULSE SPECIFICATIONS
Specifications Category
Specifications
Minimum
Programmable Pulse
Width
7
200 µs
• Note: Minimum pulse width for settled source at a given I/V
output and load can be longer than 200 µs.
Pulse Width
Programming
Resolution
1 µs
Pulse Width
Programming Accuracy
± 25 µs
Pulse Width Jitter
50 µs (typical)
Quadrant Diagram
7
Times measured from the start of pulse to the start off-time; see figure below.
Pulse Level
Bias Level
Start t
on
Start t
off
90%
10%
t
on
t
off
10%