Keithley 2635 Reference Manual

Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
Specifications are subject to change without notice.
SPEC-2611_2612 Rev. A / June 2006 Page 3 of 6
Models 2611/2612
System SourceMeter
®
Specifications
10ȝA range: <500ȝs typical.
1ȝA range: <2ms typical.
100nA range: <20ms typical.
DC floating voltage: Output can be floated up to ±250VDC from chassis ground.
Remote sense operating range:
1
Maximum voltage between HI and SENSE HI = 3V. Maximum voltage between LO and
SENSE LO = 3V.
Voltage output headroom:
200V range: Max. output voltage = 202.3V; total voltage drop across source leads (maximum 1ȍ per source lead).
20V range: Max. output voltage = 23.3V; total voltage drop across source leads (maximum 1ȍ per source lead).
Over temperature protection: Internally-sensed temperature overload puts unit in standby mode.
Voltage source range change overshoot: Overshoot into a 200k load, 20MHz BW, 300mV typical.
Current source range change overshoot: <5% of larger range + 300mV/Rload + 60nA typical (see “Current source output
settling time” for additional test conditions).
Pulse Specifications
Region Maximum current limit Maximum pulse width
7
Maximum duty cycle
8
1 100mA at 200V DC, no limit 100%
1 1.5A at 20V DC, no limit 100%
2 1A at 180V 8.5ms 1%
3
9
1A at 200V 2.2ms 1%
4 10A at 5V 1ms 2.2%
Minimum programmable pulse width:
7
200ȝs. NOTE: Minimum pulse width for settled source at a given I/V
output and load can be longer than 200ȝs. See note 10 for typical settling times.
10
7 Times measured from the start of pulse to the start of off-time:
Pulse Level
Bias Level
Start t
on
Start t
off
90%
10%
t
on
t
off
10%
8 Thermally limited in sink mode (quadrants 2 and 4) and ambient temperatures above 30°C. See power equations in the
Reference Manual for more information.
9 Voltage source operation with 1.5A current limit.
10 Typical performance for minimum settled pulse widths:
Source value Load Source settling (% of range) Min. pulse width
5V 0.5ȍ 1% 300µs
20V 200ȍ 0.2% 200µs
180V 180ȍ 0.2% 5ms
200V (1.5A limit) 200ȍ 0.2% 1.5ms
100 mA 200ȍ 1% 200µs
1A 20ȍ 1% 500µs
1A 180ȍ 0.2% 5ms
10A 0.5ȍ 0.5% 300µs
Typical tests were performed using remote operation, 4W sense, Keithley 2600 ban cables and best fixed
measurement range. For more information on pulse scripts, see the Series 2600 Reference Manual.

Keithley 2635 Specifications

General

Brand	Keithley
Model	2635
Category	Measuring Instruments
Language	English