Tektronix 545A Instruction Manual page 71

waveform. It is important that you adjust each pair of
inductors in conjunction with each other.
should be set at the same position as its corresponding-
opposite inductor.
Adjust the inductors, in pairs for the squarest possible
corner. It may be necessary to readjust the first two or
three capacitors closest to the crt in order to achieve a
wrinkle-free corner.
At this time the displayed waveform should be level on
top, there should be virtually no bumps or wrinkles, and the
risetime of the displayed waveform should be within specifi ­
cations for the instrument.
played waveform gives a very good check on the complete­
ness of the adjustments.
BANDPASS CHECKS
Install a properly calibrated Type K Unit in the oscillo ­
scope and connect the output cable from the Constant-
Amplitude ignal Generator to the INPUT Connector of the
Type K Unit. et the front-panel controls as follows:
TABILITY
TRIGGERING LEVEL
5
Each inductor
A risetime check on the dis ­
full right
any position
Calibration Procedure — Type 545A
TRIGGER LOPE
TRIGGERING MODE
TIME/CM
VARIABLE
HORIZONTAL DI PLAY
Tye K Unit
AC/DC
VOLT /CM
VARIABLE
et the frequency controls on the
an output frequency of 500 kc, and adjust the amplitude
controls for a vertical deflection of exactly 4 centimeters.
Position the display on the crt (with the VERTICAL PO I ­
TION control) so that the deflection extends exactly from
the top graticule mark to the bottom graticule mark.
Then increase the output frequency of the
erator to 30 m c (make sure the VOLT /CM and VARIABLE
controls are set to .05 and CALIBRATED, respectively);
the deflection should be at least 2.8 centimeters at 30 m c .
If not, the Vertical Amplifier and the Delay Line (and pos ­
sibly the Type K Unit) are in need of futher adjustment.
INT. (+ or -)
AC LF REJECT, AC
or DC
1 MILLI EC
CALIBRATED
A
DC
.05
CALIBRATED
ignal GENERATOR for
ignal Gen ­
6-11