The Extech 380400 Resistance Decade Box is a multi-function resistance testing device that offers 7 decades of resistance ranges from 1 to 11MΩ (in 1Ω steps). Slide switches allow easy addition and subtraction of resistance values. Binding posts (3) offer simple and secure connections. Careful use of this decade box will provide years of reliable service.
The Extech 380400 Resistance Decade Box provides seven decades of resistance ranges from 1 to over 11MΩ in 1Ω steps. It features 28 front panel switches for easy addition or subtraction of resistance values and three binding posts for secure connections. The device includes an internal resistance of 0.3Ω and a power rating of 0.3W.
| Resistance ranges | 1 to 11,111,110 Ω in 1Ω steps |
|---|---|
| Internal Resistance | 0.3 Ω |
| Power | 0.3W |
| Accuracy | 1% |
| Operating Temperature | 0 to 50°C |
| Dimensions | 5.79 x 4.61 x 1.3" |
Connect the positive lead to the RED post and the negative lead to the BLACK post.
The WHITE post is case ground and is typically not used unless the device under test needs to be grounded to the case.
Set the switches corresponding to the desired value to the IN position to add them to the total resistance.
Extech recommends that calibration be performed on an annual basis to ensure calibration integrity.