B&K Precision Electronic Multimeter Model 277 - Tested and Working VGC
B&K Precision Electronic Multimeter Model 277 - Tested and Working VGC - Unit comes with the original DYNASCAN PR-21 Probe - VGC - Please see all photos. An electronic copy of the manual is included.
Condition: Excellent tested AC/DC voltage, A/ma and R against know standards, the analog meter was within 2% on all functions checked! I've had this one for a while and its always been accurate if you carefully zero the meter prior to observing the results. Case is in exceptional shape as well.
PR-21 probes are hard to find, they were sold with the 277 with later years production. It's a 10:1 / direct probe for scopes and meters, rated 10 MHz / 500v. I've see just the probes sell for quite a bit. Keep in mind these probes have shielded cables, that provide more accurate measurements including lower voltages, for example.
Specifications Highlights:
DC Volts - 9 Ranges +-2% accuracy .1V to 1000V full scale
Input Resistance: 15 Megohms, +-2% accuracy Including the 100K isolating resistor in probe
AC Rejection: 20db minimum @60Hz for 2% accuracy change
AC Volts - 9 RMS Ranges +-3% accuracy .1V to 1000V full scale
9 Peak to Peak ranges .28 to 2800V full scale
Accuracy is +- 3% full scale @ 60hz
Input Impedance: 10 Megohms, shunted by 56pf at input jacks head.
Frequency Response: +-.5db, 20Hz to 140KHz approx. 3db @ 400KHz
OHMs MEASUREMENTS
7 Low Volt Ranges (68mv) RX1, RX10,RX100, RX1K,RX10K,RX100K, RX1M
Midscale Readings: 10 Ohms on RX1 Range
Accuracy: +-3 deg.of arc
DC CURRENT: 9 Ranges: 1μa to 1Amp
Accuracy: 3% full scale
DECIBLE (db) 9 Ranges -20 to +62
Accuracy: 3% full scale