The second measuring method is called "RMS Sensing, RMS Indicating." An instrument with this type of measuring system computes the RMS value of the measured waveform (sine or otherwise). This is referred to as "True-RMS" reading. This measuring system is accurate for any waveform. When an average sensing instrument is used on a non-sinusoidal waveform, measurement accuracy could be off as much as 50%. Since you may not know what type of AC waveform you are measuring, a True-RMS instrument should be used whenever possible.
Features:
- Frequency to 40 MHz, Temperature to 1832 F, Capacitance to 4000 µF
- Input warning tone when Test Leads are in the wrong jack
- 1000V/750V DC/AC
- 10 Amps AC/DC, fully safety fused
- Resistance to 40Mohm
- Autoranging; display: 3-3/4 digit LCD, 3999 counts with 41-segment analog bar graph
- Display update rate: 2/sec, nominal
- Operating temperature: 0 °C to 45 °C at < 70 % R.H
- True-rms digital multimeter with temperature and backlight
- Overrange indication
- Auto power off to save battery life
- Min/max, data hold and range lock
- Separate door for easy battery and fuse access
- Magne-Grip Holster with magnetic hanging strap
- 1 - True-RMS Digital Multimeter (34XR-A)
- 1 - Set of Test leads with threaded alligator clips (TL36A)
- 1 - 9V Battery (installed)
- 1 - Magne-Grip Holster with magnetic hanging strap
- 1 - Temperature Adapter (TA-1)
- 1 - Type K thermocouple probe (TP255A)
- 1 - Spare fuse
- 1 - Users Manual