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DC Voltage Current Source/Monitor
6241A / 6242

High-performance DC voltage current source/monitor capable of pulse source/measurement with a minimum pulse width of 50 μs

The 6241A/6242 is a DC voltage and current source/ monitor capable of 4½-digit generation and 5½-digit measurement with high accuracy of ±0.02 %.
The instrument has two slope linear sweep, linear sweep, fixed sweep and random sweep functions, and is also capable of pulse measurement with a minimum pulse width of 50 μs and low voltage/current measurement with a resolution of 1μ V/100 pA. Thus, it can be used for a wide range of applications for evaluation in R&D of semiconductors and other electronic components, or for characteristic tests in a production line.
The sink-enabled bipolar output, the individual HI/LO limiter function and the suspend function are effective in evaluation of batteries and power ICs.


Source and measurement function
Voltage/current source and voltage/current/resistance measurement can be selected by specifying the source and measurement functions.

Voltage/current source mode
There are four source modes; DC, pulse, DC sweep, pulse sweep. Then, the sweep modes are classified into four sweep types: fixed sweep, linear sweep, random sweep (user programmable sweep), two slope linear sweep (linear sweep with step value switching). The minimum pulse width is 50 μs. The minimum cycle is 2 ms, or 500 μs without measurement. 

Individual settings of HI/LO limiters
In voltage/current source, the HI/LO limiter settings are very important. The 6241A/6242 has a function that can set the HI and LO limiters individually. Furthermore, for the voltage-limiter, both HI and LO limiters can be set homo-polar. This prevents a capacitor or a battery from being over-discharged. Also, it is suitable for evaluating devices such as LDs that are used at a constant current and do not tolerate reverse voltage application.

Suspend function
The 6241A/6242 can select from three output OFF statuses; STBY (output relay OFF), HiZ (output relay ON and high resistance), and LoZ (output relay ON and low resistance). Using this function can omit unnecessary relay ON/OFF action, which reduces deterioration of the throughput due to relay operation time and improves the life span of the relay.
In addition, the setting of a suspend voltage (voltage in HiZ and LoZ status) prevents transient current sink that occurs at a connection of a voltage output device such as a battery. 

Sample hold measurement
Sample hold measurement is available in the pulse mode and the pulse sweep mode. Measurement holds an input signal immediately before pulse falling edge, and A/D conversion is implemented for integration time of 100 μs. In this case, the setting measurement delay time is ignored.

  6241A 6242
Number of digits for generation 
Output method Bipolar

Maximum output (top)

Minimum resolution (bottom)


±32 V/0.5 A

 ±6 V/5 A
10 μV


±0.5 A/32 V ±5 A/ 6V 
 1 nA
Number of digits for measurement
Accuracy (typical range) 0.02 % 
Minimum measurement resolution Voltage  1 μV
Current 100 pA 
Maximum measurement resistnace
/ Minimum resolution
1.6 GΩ/2 μΩ 304 MΩ/0.2 μΩ 
Pulse application / Measurement Available
Minimum pulse width 50 μs
Interface USB, GPIB 

*For the detailed specifications, please download the brochure from "Documents."