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Keithley 220 Programmable Current Source
- IEEE-488 bus standard
- 100 location program memory
- Programmable dwell time - 3 ms to 999.9 s
| Range |
Maximum Output |
Step Size |
| 100 mA |
±101.00 mA |
50 µA |
| 10 mA |
±19.995 mA |
5 µA |
| 1 mA |
±1.9995 mA |
500 nA |
| 100 µA |
±199.95 µA |
50 nA |
| 10 µA |
±19.995 µA |
5 nA |
| 1 µA |
±1.9995 µA |
500 pA |
| 100 nA |
±199.95 nA |
50 pA |
| 10 nA |
±19.995 nA |
5 pA |
| 1 nA |
±1.9995 nA |
500 fA |
- Display - 0.5 in LED digits, 4 ½-digit signed mantissa, 1-digit
signed exponent.
- Maximum Allowable Common Mode Voltage (Output or Output Common to
Chassis) - 250 V rms, DC to 60 Hz.
- Output Resistance - > 1014 ohms (on
1 nA range).
- Output Capacitance - < 20 pF.
- Voltage Limit - Bipolar, 1 to 105 volts in 1 V programmable
steps.
- Output Load - must be non-inductive
- External Trigger - TTL-compatible EXTERNAL TRIGGER INPUT and
OUTPUT.
- Output Connections - Teflon insulated 2-lug triax connector
(Specialty Connector #30JR121-1) for output; five-way binding posts for GUARD, OUTPUT
COMMON, and CHASSIS; BNC (chassis isolated) connectors for EXTERNAL TRIGGER INPUT and
OUTPUT, Amphenol or Cinch Series 87 IEEE and printed circuit digital I/O port. All
connections on rear panel.
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