| Model |  1698 |  1697 |  1505 |  1502 |  1501 |
| Description | DC Power Supply, Programmable, Switch Mode, 1-60V 0-3.3A, Digital Display, RS232 Interface | DC Power Supply, Programmable, Switch Mode, 1-40V 0-5A, Digital Display, RS232 Interface | DC Power Supply, Regulated DC, 0-20V, 500mA | DC Power Supply, Battery Eliminator, 1.5V, 3V, 4.5V, 6V, 12V, 500mA | DC Power Supply, Battery Eliminator, 1.5V or 3V, 3A |
| Output (Volts) | 1-60V | 1-40V | 0-20V | 1.5V, 3V, 4.5V, 6V, 9V, 12V | 1.5V or 3V |
| Output (Amps) | 0-3.3A | 0-5A | 0.5A | 0.5A | 3A |
| Ripple & Noise | 25mV | 25mV | 100mVp-p | 200mVp-p | |
| Metering | | | None | None | None |
| Manufacturer's Warranty | 1-year | 1-year | 1-year | 1-year | 1-year |