7B53A/7B53An Features - Tektronix 7B53A Instruction Manual

OPERATING
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Section 1-7B53A/7B53AN
INSTRUCTIONS
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7B53A/7B53AN Features
The 7B53A and 7B53AN Dual T ime Base units provide
Main, I ntensified, Delayed , and Mixed sweep operation for
TEKTRONIX 7000-Series Oscilloscopes. Calibrated sweep
rates from 5
slO
IV to 50 ns/D IV (5 nanoseconds with X 10
magnification) and triggering to 100 megahertz are
provided. The 7B53A and 7B53AN are electrically identical
ex cept that only the 7B53A is compatible with the
alphanumeric readout system provided for 7000-Series
Oscilloscopes.
Other features include 0 to 10 times continuous sweep
delay, variabie main and delayed sweep rates, and variabie
main sweep holdoff. Separate triggering controls are
provided for main and delayed sweep triggering, and when
operating in the AUTO MAIN TRIGGERING MODE, a
bright base line is d isplayed in the absence of a trigger
signa!. The 7B53A/7B53AN can also be used as an amplifier
for X-V operation.
Before pr o ceeding with installation it is necessary to
check the settings of the Variabie Selector multi-pin
connector (P140) and the Delayed Sweep Gate Out
multi-pin connector (P613) . The Var iabie Selector muIti-
pin connector (P140) determ ines whether the front-panel
VAR IABLE control varies main sweep rates, delayed sweep
rat es, or main sweep holdoff; the Delayed Sweep) Gate Out
multi-pin connector (P613) determines whether the
Delayed Sweep Gate Out signal is connected to the
front-panel DL Y'D TRIG IN connector (see Fig. 1-3). Refer
to General Operating Instructions in this section for
VARIABLE control and DLY'D GATE OUT information.
To install the 7B53A/7B53AN in a plug -in compart-
ment, push it in until it fits firmly into the compartment.
The front panel of the 7 B53A/7B53AN should be flush
with the front panel of the indicator oscilloscope. Even
though the gain of the indicator oscilloscope is standardized
to minimize adjustment when inserting plug-in units, the
sweep calibration of the 7B53A/7B53AN should be
checked when instalied . The procedure for checking the
unit is given under Sweep Calibration in the Operating
Checkout procedure in this section.
To remove the 7B53A/7B53AN, pull the release latch
(see Fig. 1-2) to disengage the unit from the indicator
oscilloscope and pull it out of the plug-in compartment.
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General
The 7B53A/7B53AN operates with a TEKTRONIX
7000-Series Oscilloscope and a 7A-Series Amplifier unit to
form a complete oscilloscope system. To effectively use the
7 B53A/7 B53AN its operation and capab i Iities shou Id be
known. This section describes the operation of the front-
panel controls and connectors, provides an Operating
Checkout procedure, gives genera I operating information,
and basic applications for th is instrument.
Installation
The 7B53A/7B53AN is designed to operate in the
horizontal compartment of the ind icator oscilloscope. This
instrument can also be instalied in the Vertical plug-in
compartment to provide a sweep that runs vertically on the
CRT. However, when used in this manner, th ere are no
retrace blanking or internal triggering provisions, and the
unit may not meet the specifications given in Section 2.
The instructions in this manual are written for use of the
7B53A/7B53AN in the horizontal plug-in compartment.
®
7B53A
Fig. '·2. Location of release latch.
DU A L TI M E
BA~
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