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Bench Digital Multimeter with RS232 Interface RSR Bench MultiMeter
- 3-3/4 (3999) count) large LCD display with back light.
- Bar graph display - 42 segment
- True RMS for AC voltage/current
- RS232C standard interface - software included
- Data hold, min/max relative measuring, storage data
Specifications: DCV:0-400m-4-40-400-1kV±0.3% ACV:0-4-40±0.8%-400-750V±1.2%(40Hz-1kHz) DCA:0-4m-40m-400m±0.8%-10A±2.0%(20A for 30 Sec.) ACA:0-4m-40m-400m±1.5%-10A±2.0%(20A for 30 Sec.) R:0-400-4k-40k-400k±0.5%-4M±1.0%-40Mohm±1.5% CAP:0-4n-40n-400n-4u-20±2.0%-40uF±5.0% Frequency:0-100-1k-10k-100k-1MHz±0.1% Audible continuity:<50ohm Diode Test:0.6mA,0.3V Test leads, Power cord, RS232C cable, software and carrying strap are included.
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Most Helpful Customer Reviews on Amazon.com (beta)
(2) Backlighted display
(3) Convenient form factor, and it has a fold out stand, which I find necessary.
(4) Compartments for either AA or 9V batteries are a nice touch, as is the hatch on top to stow the probes and cables.
(5) The display is clear and easy to read, although it provides limited visibility when viewed from above at an angle of perhaps 60 degrees (it offers sufficient lateral visibility).
(6) Carrying handle is, well, handy.
(7) Measures capacitance and frequency in addition to the usual suspects
(9) Faux analog meter
(10) RS-232 port/cable to link with computer (some serial-to-USB adapters may not work with this device; this is typically a driver issue)
On the minus side (also in no particular order):
(1) Insubstantial (cheesy) and unusable probes. These could even be a safety hazard around high voltages. I had a professional set on hand that I am using with the M9803R.
(2) No marker on the FUNCTION/RANGE SELECTOR knob, so you can tell which setting it's pointing to. I corrected this by daubing a line of red model paint in the appropriate groove.
(3) The beep, for making continuity checks, for example, is not loud enough!
(4) Tiny little Philips screw to access the battery compartment
(5) No auto shutoff
(6) "Chinglish" Users Manual -- One of my faves: "The Continuity Measurement is always fixed the range." Hey, Honey. I fixed the range! When's supper?
The software runs on Windows 98/NT/ME/2000/XP but I have Vista and have no problem. RS232 output is a serial port, so I use a KEYSPAN adapter to connect to a USB port and run seamless (sold by Amazon too).
The software is to record the actual reading at interval time from 1 second to 3600 seconds. I use to monitors the RMS voltage of my power generator for 6 hours and gave me a graphics too. Exporting to Excel is in csv format, that is why I didn't give a 5 star.
Solid construction, accurate for the bench work, and also portable. I use a strap that came with it to hang in front of me, and leave both hands free to test vertical electric control panels on the field.
It's a little bulky if you're primary intention is to use it for portable on-the-go stuff. But it works well either on the bench or as a portable unit otherwise.
Excellent for the price. You'd generally have to pay more for something comparable.
The manual is short on some specifics. The worst area is the RS232 output.
The meter leads almost had me ready to box it up and send it back. They didn't make contact with the meter. As a result when I went to do a quick check that it would measure a resistor, it simply showed open circuit. Somebody sure saved a lot of money on those leads. If you buy this meter buy some leads that have real banana plugs on the meter end or buy some good bananas and retrofit the leads. As they stand, the leads can't be used.
I found the source code from someone who figured out the weird RS-232 format. Don't expect just ASCII numbers directly from the meter. It is a funny unpacked BCD format at 9600 BAUD.
Would I buy another one? YES YES and YES.