Tektronix 634, Instruction Manual

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Section 2— 634 Operators
OPERATING INSTRUCTIONS
AMBIENT TEMPERATURE
CONSIDERATIONS
This instrument can be operated where the ambient air
temperature is between 0° and +50° C (+32° and +122°
F), and can be stored in ambient temperatures between
-40° and +70° C (-40° and +1 58° F). After being stored in
temperatures beyond the above operating limits, allow
the chassis temperature to return to within the operating
limits before applying power. Allowing the Monitor to
operate at an ambient temperature substantially higher
than that specified may result in poor reliability as well
as inaccurate performance.
When the 634 is mounted in a rack with other
equipment, it is important that the ambient temperature
surrounding the Monitor does not 50° C (+122°
F). Additional clearance for convection, or forced
ventilation methods (fan), may be needed to maintain
ambient temperatures below +50° C (+122° F). Reliability
and performance of the 634 will be affected if the
ventilation holes in the protective panels are obstructed,
or if the 634 is operated at an ambient temperature
higher than +50° C (+122° F). Other environments and
mounting configurations may require additional cooling
measures.
CONTROLS AND CONNECTORS
Controls and
connectors necessary for operation of the
634 Monitor are located on the front and rear panels of
the instrument. To make full use of the capabilities of this
instrument, the operator should be familiar with the
function and use of each external control and connector.
The front-panel controls are shown and described in
Figure 2-1. Brief descriptions of the standard rear-panel
controls and connectors are given in Figure 2-2. The
Option 20 rear panel is illustrated in Figure 2-3.
INPUT SIGNAL REQUIREMENTS
The 634 Monitor requires a negative sync-tip video input
signal for proper operation. The input signal amplitude
range should not exceed 0.35 to 2 volts peak-to-peak for
normal operation, or a maximum of 5 volts peak.
OPERATORS CHECKOUT
PROCEDURE
The following procedure is provided to aid in obtaining a
display on the 634 Monitor and may be used as a check
of basic instrument operation. The procedure may be
used for incoming inspection to verify proper operation,
and may also be used by the operator for instrument
familiarization. Only instrument functions, and not
measurement quantities or specifications, are checked in
this procedure. Therefore, a minimum amount of test
equipment is required. If performing the Operators
Checkout Procedure reveals improper performance or
instrument malfunction, first check the operation of
associated equipment, then refer to qualified service
personnel for repair or adjustment of the instrument.
TEST EQUIPMENT REQUIRED
The following test equipment was used as a basis to
write the Operators Checkout Procedure. Other test
equipment, which meets these requirements, may be
substituted. When other equipment is substituted, the
control settings or set up may need to be altered.
1. Sync Pulse and Test Signal Generator
Description: Negative-synchronized video signal
generator.
Type Used: TEKTRONIX 1470 NTSC Color Sync Test
Signal Generator.
2. Cable
Description: Coaxial; length, 42 inches; connectors,
BNC male-to-male; impedance, 75 ohms.
Type Used: Tektronix Part 012-0074-00.
PRELIMINARY SETUP
1. Connect the 634 Monitor power cord to a suitable
power source.
NOTE
Check the line voltage information indicated
on the rear panel. If the source voltage is not
within this range, refer qualified service
personnel to the servicing information
sections of the 634 Instruction Manual.
2. Open the access door on the front panel and set the
controls as follows:
BRIGHTNESS ......... ................. Fully counterclockwise
FOCUS .................... Midrange
CONTRAST .......... Midrange
POWER ............................. Out (PULL ON)
3. Allow at least one minute for the instrument to warm
up.
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