Tektronix 551 Dual Beam Instruction Manual page 5

The Type 551 Oscilloscope is a dual-beam, laboratory-
type instrument, well suited to oscilloscope applications
involving fast-rise pulses and transients.
Plug-In
Type A
Type B
Type CA
Type D
Type E
Type G
Type H
Type K
Type L
Risetime—0.012 /isec
Linear Deflection— 4 cm for each beam. (2 cm overlap is
available)
DC coupled
Delay Line— Balance Network Signal Delay —0.2
Delay Lines
The balanced delay lines delay the arrival of the vertical
deflection signals at the crt plates 0.2 fisec.
Special Purpose Plug-In Units
Type N
The Type N Sampling Unit is designed for use with Tek­
tronix plug-in type Oscilloscopes.
Separate, and
INPUT CHARACTERISTICS
Deflection-Factor
(C alibrated)
0.05 v/cm to 20v/cm
0.05 v/cm to 20 v/cm
5 mv/cm to 0.05 v/cm
0.05 v/cm to 20 v/cm
1 mv/cm to 50 v/cm
0.05 mv/cm to 10 mv/cm
0.05 v/cm to 20 v/cm
0.005 v/cm to 20 v/cm
0.05 v/cm to 25 me
0.05 v/cm to 20 v/cm
0.005 v/cm to 2 v/cm
fisec.
The sampling system
identical, vertical amplifiers are provided for each beam.
Plug-in preamplifiers are used in the vertical-deflection
systems, permitting the instrument to be used in many
specialized applications.
TABLE l-l
Pass Band
dc to 18 me
dc to 18 me
5 cps to 10 me
0.035 fisec
dc to 22 me
0.016 /isec
dc to 350 kc at 1
mv/cm increasing to
2 me at 50 mv/cm
0.06 cps to 60 kc—
depending upon de­
flection factor
dc to 18 me
dc to 14 me
dc to 25 me 0.014 fisec
dc to 25 me 0.014 fisec
dc to 22 me 0.016 fisec
thus formed permits the display of repetitive signals with
fractional nanosecond (10"" second or nsec) risetimes. By
taking successive samples at a slightly later time at each
recurrence of the pulse under observation, the Type N re­
constructs the pulse on a relatively long time-base. Specifica­
tions of the Type N include a risetime of 0.6 nsec, correspond­
ing to a maximum bandpass of approximately 600 me; a
sensitivity of lOmv/cm with 2 mv or less noise; and a dy­
namic range of ± 1 2 0 mv minimum linear range before
overloading occurs. Accidental overload of ± 4 volts is per­
missible.
Type P
The Type P Plug-In Unit generates a fast-rise step-function
test signal of known waveform, simulating the output of an
ideally compensated Type K Unit driven with a Tektronix
Type 107 Square-Wave Generator. The Type P permits the
standardization of the main-unit vertical amplifier transient
response of a Tektronix convertible oscilloscope. Risetime of
Risetime ' Input Characteristics
0.02 fisec 47 fifif, 1 meg
0.02 fisec 47 fijuf, 1 meg
47 fifif, 1 meg
20 fifif, 1 meg
47 fifif, 1 meg
50 fifif, 10 meg
47 fifif, 1 meg
0.02 /isec
0.25 fisec 47 fifif, 1 meg
20 fifif, 1 meg
20 fifif, 1 meg
20 fifif, 1 meg
1-1