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5
GENERAL INFORMATION
Introduction
Four-trace h.f. unit PM 3344 is a plug-in unit for the
Y-channel of basic oscilloscope PM 3330.
This unit comprises four identical amplifiers and an
Technical data
Properties expressed in numerical values with tolerances
stated are guaranteed by the factory. Numerical values
without tolerances stated represent the properties of an
average unit and merely serve as a guide. The following
Channels
Input circuit
input
input impedance
input socket
maximum permissible input
voltage in position AC
Amplifiers
deflection coefficient
bandwidth
rise time
magnification
polarity
Mode of operation
0
electronic switch, by means of which it is possible to
display four signals.
The amplifier data apply to all channels.
data apply in case of nominal mains voltage, unless
otherwise stated. All data of this unit apply when the
unit is used in combination with main frame PM 3330.
4 identical channels A...D.
identical for channels A...D.
AC/DC
Push-button for checking zero level and channel identification.
1 MS2/18 pF
B.N.C.
400 V.
4 identical amplifiers for channels A...D.
adjustable to 10 calibrated values i.e. 10 mV/cm... 10 V/cm in 1, 2, 5
sequence.
Tolerance: -{- or — 3%.
Continuous (non-calibrated) adjustment between the steps is possible.
in position DC: 0 Hz...50 MHz
in position AC: 1.6 Hz...50 MHz
7 ns. Unit only: 5 ns.
up to 3
the useful screen height for frequencies up to 10 MHz.
The peaks of a displayed picture, having maximum amplitude, can be
displayed by means of the shift control.
reversible for each channel.
Channels A, B, C and D, chopped at 2 MHz.
Channels A, B, C and D alternately.
Each channel can be switched off separately.
Blanking during switching.
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