DM44

The Tektronix DM44 is a digital multimeter module that attaches to the top of the 464, 465, 466, and 475. It replaced the DM40 and DM43. It is a 3½ Digit Multimeter.

Key Specifications

DC V Range	0 to 1.2kV in 5 Steps
DC V Resolution	100μV
DC V Accuracy	0.1% of reading, ±1 Count
DC V Input Resistance	10MΩ, Removable internal wire strap to increase input resistance to 1000MΩ on 200mV and 2V Ranges
DC V Maximum Input Voltages, All Ranges	±1200V (DC + Peak AC) Between Positive input and Common input/Chassis
DC V Maximum Floating Voltage on COMMON	±500V (DC + Peak AC) to Chassis
Resistance Range	0 to 20MΩ in 6 Ranges
Resistance Resolution	0.1Ω
Resistance Accuracy 200Ω and 2kΩ Range	within 0.25%, ±1 count + Probe Resistance
Resistance Accuracy 20kΩ,200kΩ and 2MΩ Ranges	within 0.25%, ±1 count
Resistance Accuracy 20MΩ Range	within 0.30%, ±1 count
Resistance Response Time 200Ω and 200kΩ Range	Within 1 Second
Resistance Response Time 2MΩ and 20MΩ Range	Within 5 Seconds
Temperature Range (with HP6430Probe)	-55 °C to +150 °C