The Philips AC millivoltmeter PM 2554 is a sensitive
and accurate measuring instrument suitable for floating
measurements from 50 µV up to 300 V in the frequency
range from 2 Hz up to 12 MHz.
The instrument can be powered by mains.
By the very great bandwidth and sensitivity the instrument
has a width range of applications, e.g. measurements on
LF and HF amplifiers, carrier-wave telephony, electro-acoustical
as well as for measurements on transducers and
The d.c. or a.c. output choosen by an internal jumper,
makes it possible to employ the instrument as an a.c./d.c.
converter or as an a.c. amplifier.
The instrument has a great indicating speed, a high
temperature stability and is quickly ready for use.
The 12 measuring ranges of 1 mV up to 300 V f.s.d. overlap
so that a high reading accuracy is obtained.
The moving-coil instrument is provided with a mirror scale
with the ranges 0-30 and 0-100 as well as dB scale from
—20 dB...+ 2 dB (total span —80 dB... + 52 dB).
By means of the measuring-probe PM 9336 the input impedance
can be changed from 1 MΩ// 30pF except capacity measuring
cable (100 pF) into 10 MΩ// 11 pF to permit measurements
on very high ohmic circuits.