4 Quadrant Operation -  The 228A is capable of bipolar source or sink up to a full 100 watts without derating, permitting it to act as a voltage or current supply or as an active load.

• 100 watt source or sink
• < 1ms transient recovery
• Built-in voltage and current monitors

• Output Resistance (maximum) -
  • 100 V Range:  10 m ohms.
  • 10 V Range:   100 µ ohms.
  • 1 V Range:  100 µ ohms.
• Output Inductance -  100 µ H typical
• Sensing - REMOTE or LOCAL

• Output Resistance (min) -
  • 10 A Range:  10⁴ ohms
  • 1 A Range:  10 ⁵ ohms
  • 0.1 A Range:  10⁶ ohms
• Output Capacitance - 0.2 µ F typical
• Output Load -  Must be non-inductive

Scale Factor - 1 V = 100% of range

External Modulation

Sensitivity - -10V increases magnitude of programmed output by 100% full scales; + 10 V decreases magnitude of programmed output by 100% of full scale

Modulation Frequency - 600 Hz bandwidth

General

Display - Dual 3½-digit LED (0.5 in) displays indicate programmed values in Standby and output values in Operate

Program Memory (battery backed-up) -  Stores up to 100 output settings.

• Range of Dwell Times:  10 ms to 1000 s 

Output Connections -   Quick disconnect card with screw terminals for output, modulation, current monitor, and external sense.  BNC (chassis isolated) connectors for TRIGGER IN/OUT.

Standard IEEE-488 Bus

Please contact us for more information on the Keithley 228A