Keithley 2601 Reference Manual page 486

Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, Ohio 44139
1-888-KEITHLEY
www.keithley.com
4. GENERAL
Host interfaces: Computer control interfaces.
IEEE-488: IEEE-488.1 compliant. Supports IEEE-488.2 common commands and status model topology.
RS-232: Baud rates from 300 bps to 115200 bps. Programmable number of data bits, parity type, and flow control
(RTS/CTS hardware or none). When not programmed as the active host interface, the SourceMeter can use the
RS-232 interface to control other instrumentation.
Expansion interface: The TSP-Link expansion interface allows TSP-enabled instruments to trigger and
communicate with each other.
Cable type: Category 5e or higher LAN crossover cable.
Length: 3 meters maximum between each TSP-enabled instrument.
Digital I/O interface (see Models 2601 and 2602 GENERAL specifications for circuit diagram):
Connector: 25-pin female D.
Input/output pins: 14 open drain I/O bits.
Absolute maximum input voltage: 5.25V.
Absolute minimum input voltage: –0.25V.
Maximum logic low input voltage: 0.7V, +850 A max.
Minimum logic high input voltage: 2.1V, +570 A.
Maximum source current (flowing out of digital I/O bit): +960 A.
Maximum sink current at maximum logic low voltage (0.7V): –5.0mA.
Absolute maximum sink current (flowing into digital I/O pin): –11mA.
5V Power supply pin: Limited to 600mA, solid state fuse protected.
Safety interlock pin: Active high input. >3.4V at 24mA (absolute maximum of 6V) must be externally applied to
this pin to ensure 200V operation. This signal is pulled down to chassis ground with a 10k resistor. 200V
operation will be blocked when the INTERLOCK signal is <0.4V (absolute minimum of –0.4V). See figure below:
Power supply: 100V to 240VAC, 50–60Hz (manual setting), 240VA max.
Cooling: Forced air. Side intake and rear exhaust. One side must be unobstructed when rack-mounted.
Warranty: One year.
EMC: Conforms to European Union Directive 89/336/EEC, EN 61326-1.
Safety: Conforms to European Union Directive 73/23/EEC, EN 61010-1, and UL 61010-1.
Dimensions: 89mm high × 213mm wide × 460mm deep (3 1⁄2 in × 8 3⁄8 in × 17 1⁄2 in). Bench configuration (with
handle and feet): 104mm high × 238mm wide × 460mm deep (4 1⁄8 in × 9 3⁄8 in × 17 1⁄2 in).
Weight: Model 2611: 4.75kg (10.4 lbs). Model 2612: 5.50kg (12.0 lbs).
Environment: For indoor use only.
Altitude: Maximum 2000 meters above sea level.
Operating: 0°C–50°C, 70% R.H. up to 35°C. Derate 3% R.H./°C, 35°C–50°C.
Storage: –25°C to 65°C.
Specifications are subject to change without notice.
Page 6 of 6
Coil
Resistance
INTERLOCK Pin
145Ω ±10%
(on DIGITAL I/O
connector)
10kΩ
Chassis
Ground
Rear Panel
System SourceMeter
Read by firmware
+220V Supply
–220V Supply
To output stage
SPEC-2611_2612 Rev. A / June 2006
Models 2611/2612
®
Specifications