Specification; Introduction; Main Sweep Triggering - Tektronix 7B53N Instruction Manual

Introduction
The 7B53N is a dual time base unit designed for use in
Tektronix 7000-Series Oscilloscopes without a readout
system ; however it is compatible with all 7000-Series
Oscilloscopes. The 7B53N features calibrated sweeps from
5 seconds/division to 50 nanoseconds/division (5
nanoseconds/division with X10 magnification) . The Main or
Delayed sweep rates may be varied continuously (uncali-
brated) between calibrated steps. Sweep triggering is pro-
vided to at least 100 megahertz, Separate trigger controls
are provided to select the desired triggering for the main
and delayed sweeps.
O
SECTION l
SPECIFICATION
TABLE 1-1
ELECTRICAL
MAIN SWEEP TRIGGERING
7B53N
Four display modes are provided . These include separate
display of the main sweep, an intensified display, delayed
sweep, and mixed sweep . The 7B53N can also be used as an
amplifier for X-Y operation.
This instrument will meet the electrical characteristics
listed under Performance Requirement in Table 1-1, fol-
lowing complete calibration . The following electrical char-
acteristics apply over an ambient temperature range of 0°C
to +50°C, except as otherwise indicated. Warmup time for
given accuracy is 20 minutes.
Characteristic Performance Requirement Supplemental Information
Source
Internal from associated vertical unit . Selected by SOURCE switch .
Internal from AC power source .
External
External divide by ten.
Coupling AC Selected by COUPLING switch .
AC low-frequency reject .
AC high-frequency reject .
DC
Polarity Sweep can be triggered from positive- Selected by LEVEL/SLOPE control .
going or negative-going portion of trigger
signal .
Internal Trigger Sensitivity
AC 0.3 division of deflection, minimum, 30 The specified upper -3 dB frequency
hertz to 10 megahertz; increasing to 1 .5
of the vertical system supersedes the
divisions at 100 megahertz.
frequency limits given in the Internal
Trigger Sensitivity table when the
number in the table is greater than the
upper -3 dB frequency of the vertical
unit .