The Model 121 is a programmable DC current source designed for bench-top or panel-mounted use in testing and calibration applications, providing a low-noise output from 100 nA to 100 mA across 13 fixed ranges and a user-programmable setting. It features a 3-digit LED display, current reversal, and a USB interface that emulates an RS-232 serial port for integration with automated systems. The unit is DIN panel-mountable with a detachable terminal block, measures 96 mm wide × 48 mm high × 166 mm deep, and operates from 100 to 240 VAC, 50/60 Hz. It offers compliance voltage of ±11 V up to 30 mA and 10 V up to 100 mA, with accuracy of 0.05% on the 10 µA range and 0.5% on the 100 nA and 300 nA ranges. The device is CE marked and RoHS compliant.
The Model 121 programmable DC current source is a precision instrument suitable for bench-top use or panel-mounted operation in labs, test facilities, and manufacturing environments. It provides a low-noise, highly stable source of current up to 100 mA, with convenient manual selection through 13 pre-set output levels, each representing a ten-fold change in power when attached to a resistive load. A “user” setting allows the current output to be defined anywhere within the operating range of the unit, from 100 nA to 100 mA.
Programmable operation is also possible via the instrument’s USB computer interface, through which the Model 121 can be commanded to output any desired current at any time. Thus, application-specific
The instrument operates at 5 VDC, and power is supplied by the external AC wall-mount supply provided with the standard Model 121. The supply will automatically conform to any AC line voltage ranging from 100 VAC to 240 VAC, 50 or 60 Hz.
| Lake Shore Cryotronics, Inc. | |
|---|---|
| Product Category | Power Supplies |
| Product Number | Model 121 |
| Product Name | Programmable DC Current Source |
| Type | Current Source |
