Tektronix 314 User Manual

Performance CheckICalibration-314 Service
STORAGE SYSTEM
I Equipment Required
3. 50-ohm Termination
1. Time Mark Generator
4. Function Generator
2. 50-ohm BNC Cable
5. 50-ohm 10X Attenuator
Control Settings
TIME/DIV
Variable
VOLTS/DIV CH 1
VARIABLE
CH 1 lnput Coupling
DISPLAY
TRIGGERING
Source
Coupling
LEVEL
SLOPE
Mode
STORAGE
STORE
AUTO ERASE
ENHANCE
10
,us
CAL
.5
v
CAL
DC
CH 1
I NT
AC
midrange
+
NORM
out
out
out
1. Check Stored Writing Speed (80 divlms, min)
a. Connect 10 ,us markers from Time Mark Generator
through 50-ohm cable and 50-ohm termination to CH
1
VERT INPUT connector.
(1) Instead of setting the INTENSITY control at the45"
setting, turn INTENSITY control fully counterclockwise.
(2) Connect DVM between
TP695 and TP696 on HV
&
UNBLANK circuit board, and record the voltage.
(3) Turn INTENSITY control clockwise until DVM
reads 0.6 V higher than voltage recorded in previous step.
This voltage (between the test points) indicates 0.2 mA of
cathode current.
(4) Proceed with part f.
e. Set INTENSITY control about 45" counterciockwise
from fully clockwise position.
f. Press STORE button in. Press ERASE button after
background is fully lighted.
g. Press RESET button. Readjust TRIGGERING
LEVEL, if necessary, to write
1 horizontal trace each time
RESET button is pressed.
h. Repeatedly push and release RESET button while
slowly positioning trace vertically.
b. Set TRIGGERING LEVEL for stable display of time
markers.
i. CHECK-stored lines over the inner 6
x 8 graticule
divisions should show no breaks greater than 0.025 inch.
c. Adjust TIME/DIV Variable for 5 markers in 4
horizontal divisions.
d. Switch CH 1 lnput Coupling to GND, TRIGGERING
Source to LINE (INT button out and EXTATTEN switch to
LINE), TRIGGERING Mode to SINGLE SWP (AUTO and
NORM buttons in).
NOTE
This Check Procedure using part e is a close
approximation of the method required to check to
specifications. The more accurate method requires
removing the instrument case. If greater accuracy is
required, substitute the following procedure for
part e.
2. Check Enhanced Writing Speed (400 divlms,
min)
Do not change INTENSITY control setting from that
used (either method) in previous step.
Control Settings
STORAGE
STORE out
ENHANCE LEVEL
ccw
TRIGGERING
Source INT
Mode NORM
CH 1 Input Coupling DC

Tektronix 314 Specifications

General

Brand	Tektronix
Model	314
Category	Test Equipment
Language	English