| Model |  VSP6020 GPIB |  VSP6020 |  VSP4030 GPIB |  VSP4030 |  VSP2050 GPIB |  VSP2050 |  VSP12010 GPIB |  VSP12010 |  1692 |  1667 |  1666 |  1665 |
| Description | DC Power Supply, Switch Mode, Single Output, 0-60V, 0-20A, GPIB Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-60V, 0-20A, RS232 Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-40V, 0-30A, GPIB Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-40V, 0-30A, RS232 Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-20V, 0-50A, GPIB Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-20V, 0-50A, RS232 Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-120V, 0-10A, GPIB Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 0-120V, 0-10A, RS232 Interface, Digital Display | DC Power Supply, Switch Mode, Single Output, 3-15V, 40A, Digital Display | Switching DC Power Supply, Single Output, 1-60V, 0-3.3A, Digital Display | Switching DC Power Supply, Single Output, 1-40V, 0-5A, Digital Display | Switching DC Power Supply, Single Output, 1-19V, 0-10A, Digital Display |
| Output (Volts) | 0-60V | 0-60V | 0-40V | 0-40V | 0-20V | 0-20V | 0-120V | 0-120V | 3-15V or 13.8V fixed | 1-60V | 1-40V | 1-19V |
| Output (Amps) | 0-20A | 0-20A | 0-30A | 0-30A | 0-50A | 0-50A | 0-10A | 0-10A | 40A | 0-3.3A | 0-5A | 0-10A |
| Ripple & Noise | 10mVrms | 10mVrms | 10mVrms | 10mVrms | 15mVrms | 15mVrms | 20mVrms | 20mVrms | <= 10mVrms | <=20mV | <=20mV | <=20mV |
| Metering | | Dual Digital | | Dual Digital | | | | | Dual Digital | Dual Digital | Dual Digital | Dual Digital |
| Manufacturer's Warranty | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year |