Tektronix 7613 User Manual

Section 1—7613/R7613 Service
OPERATING
INFORMATION
The 7613/R7613 can be operated from either a 110-volt
or a 220-volt line source. In addition, three operating ranges
can be selected by a jumper located on the Rectifier board.
Select a range which is centered about the average line volt-
age to which the instrument is connected.
See Table 1-1 for ranges and proper fuses.
TABLE 1-1
Regulating Range and Fuse Data
Pins Regulating Range
Selected 110-volt nominal 220-volt nominal
LOW 90 to 110 volts 180 to 220 volts
MED 99 to 121 volts 198 to 242 volts
HI 108 to 132 volts 218 to 262 volts
Line fuse 3.2 A slow-blow 1.6 A slow-blow
The 7613 can be operated where the ambient air
temperature is between 0° and +50°C. The instrument is
cooled by forced air. Adequate clearance must be provided
on back and bottom of the instrument. The R7613 is
cooled by forced air. Adequate clearance must be provided
behind the air filter and on the right side. A thermal cutout
in the instrument provides thermal protection by
interrupting the power to the instrument if the internal
temperature exceeds a safe operating level.
OPERATING SET-UP INFORMATION
INTENSITY Midrange
READOUT Midrange
FOCUS Well defined display
STORED INTENSITY Midrange
PERSISTENCE Midrange
SAVE TIME Clockwise
STORE Out (release)
SAVE Out (release)
NON-STORE In (pressed in)
VERT MODE LEFT (pressed in)
TRIG SOURCE VERT MODE
GRATICULE ILLUM As desired
POWER On {pulled out)
Display Modes
Install two vertical plug-in units into the vertical com-
partments. Set the deflection factor for two volts/division.
Connect the 4 V calibrator signal to both vertical plug-in
units. Use a pin jack to BNC connector and a dual input
coupler connector. [Install a time-base plug-in unit in the
horizontal compartment. Set the time/division switch to
0.5 millisecond/division, and adjust the trigger level for a
stable display. The left vertical signal is displayed.
Press the RIGHT button of the VERT MODE switch.
The display should be stable for either vertical unit
selected.
Press the ALT button of the VERT MODE switch.
Adjust the position controls of each vertical unit so that
two displays are present on the CRT screen. One vertical
signal is displayed per sweep and the other vertical signal is
displayed at the next sweep. This is a dual trace mode.
Press the CHOP button of the VERT MODE switch. A
dua! trace will be displayed on the CRT screen, Each verti-
cal signal is displayed during the sweep, on a time-sharing
basis.
Press the ADD button of the VERT MODE switch. The
display is the algebraic sum of both vertical signals.
Stored Displays
Obtain a display by following the instructions under
OPERATING SET-UP INFORMATION and Display Modes.
Press the STORE button, the instrument is in the vari-
able persistence mode. Change the vertical position, and
note that the stored display will fade out and the new
Position will be stored. The time that a display is stored on
the screen of the CRT is controlled by the PERSISTENCE
contro! (clockwise decreases the retention).
Press the SAVE button. All functions are locked out
except the SAVE TIME control and the STORED INTEN-
SITY control. The STORED INTENSITY controls the
brightness of the stored display. The SAVE TIME controls
the length of time that a display is stored. When the SAVE
TIME control is at MAX and in the switch detent (mini-
mum intensity) the display is not visible. Turning the SAVE
TIME control clockwise will make the stored display
visible, but will reduce the storage time. While in the MAX
save mode, the stored information will remain stored for
long periods of time even with the power turned off. Turn
the instrument on, and adjust the SAVE TIME control
setting for a visible display.
Care of Storage Screen
1. Use minimum beam intensity to produce a clear well
defined display.
2. Avoid repeated use of the same area of the CRT.
3. Do not leave a stored display on the screen when it is
no longer needed.
4, Use MAX SAVE when storing a display for extended
periods of time (minimum intensity).
5. Operate in the NON-STORE mode unless storage is
required.
BEAM FINDER
The BEAM FINDER switch provides a means of locating
a display which overscans the viewing area.
Press and hold the BEAM FINDER switch in. Increase
the vertical and horizontal deflection factors until the
display is reduced to about two divisions, and adjust the
horizontal and vertical position contro! settings to center
the display. Release the switch for normal operation.
For more detailed operating instructions see the 7613/
R7613 Operators Manual.
1-1
7613

Tektronix 7613 Specifications

General

Brand	Tektronix
Model	7613
Category	Test Equipment
Language	English