6220型直流电流源和6221型交流/直流电流源系列，是非常易于使用噪声极低的精密微电流源。微电流的产生在许多研发和产品测量应用中是关键的仪器，尤其是在半导体、纳米技术和超导等方面。6220/6221系列成为下列应用的理想选择，例如霍尔测量、Delta模式电阻测量、脉冲式测量、以及微分电导的测量等。

GENERAL SPECIFICATIONS

COMMON MODE VOLTAGE: 250V rms, DC to 60Hz.

COMMON MODE ISOLATION: >10000000000Ω, < 2nF.

SOURCE OUTPUT MODES: Fixed DC level, Memory List.

REMOTE INTERFACE:

IEEE-488 and RS-232C.

SCPI (Standard Commands for Programmable Instruments)

DDC (command language compatible with Keithley Model 220)

PASSWORD PROTECTION: 11 characters.

DIGITAL INTERFACE:

Handler Interface: Start of test, end of test, 3 category bits,+5V@300mA supply.

Digital I/O: 1 trigger input, 4 TTL/Relay Drive outputs(33V@500mA, diode clamped).

OUTPUT CONNECTIONS:

• Teflon insulated 3-lug triax connector for output.

• Banana Safety Jack for GUARD, OUTPUT LO

• Screw Terminal for CHASSIS

• DB-9 connector for EXTERNAL TRIGGER INPUT,OUTPUT, and DIGITAL I/O

• Two position Screw Terminal for INTERLOCK

INTERLOCK: Maximum 10Ù external circuit impedance.

POWER SUPPLY: 100V to 240V rms, 50-60Hz.

POWER CONSUMPTION: 120VA.

WARRANTY: 1 Year.

ENVIRONMENT:

For Indoor Use Only: Maximum 2000m above Sea Level.

Operating: 0°-50°C, 70%R.H. up to 35°C. Derate 3% R.H./°C,35°-50°C.

Storage: -25°C to 65°C, guaranteed by design.

EMC: Conforms to European Union Directive 89/336/EEC, EN61326-1.

SAFETY: Conforms to European Union Directive 73/23/EEC,EN61010-1.

VIBRATION: MIL-PRF-28800F Class 3, Random.

WARMUP: 1 hour to rated accuracies.

Passive Cooling: No fan.

DIMENSIONS:

Rack Mounting: 89mm high x 213mm wide x 370mm deep (3.5in. x 8.375 in. x 14.563 in.).

Bench Configuration (with handle and feet): 104mm high x238mm wide x 370mm deep (4.125 in. x 9.375 in. x 14.563 in.).

SHIPPING WEIGHT: 4.75kg (10 lbs).

ACCESSORIES SUPPLIED: Model 237-ALG-2 Triaxial Test Lead (6.6ft), Trigger Link cable, RS-232 (Null Modem) cable,Interlock terminal block, User’s Manual, CD Manual, LabVIEW Drivers.