Time Electronic 404N with carry case. DC Millivolt Source Potentiometer.

Description

I do not accept MB Way, nor do I ship items. Used in excellent condition. Time Electronic 404N with carry case. DC Millivolt Source Potentiometer. The Time Electronics 404N is a vintage portable precision millivolt DC calibrator and potentiometer, originally manufactured in the United Kingdom during the 1980s. Key Difference of the 404N ModelUnlike the base model 404S (which functions only as a signal injector/source), the 404N includes a front-panel adjustable null-balance display. This allows it to function both as a calibrated source and as a voltage measurement potentiometer with resolution up to 1 microvolt. Main Technical SpecificationsOutput Ranges (Three ranges selected via rotary switches):0 to 999.9 mV in 0.1 mV steps0 to 99.99 mV in 10 µV steps0 to 9.999 mV in 1 µV stepsNominal Accuracy: ± 0.05% of reading.Output Resistance: Less than 0.2 Ω on higher ranges, and 1 Ω on the 10 mV range.Maximum Output Current: Up to 20 mA (protected against continuous short circuits).Internal Reference: Precision-selected Zener diode for thermal stability.Power Supply: Operates from six standard AA batteries or six rechargeable NiMH/Ni-Cd batteries via a side connector.