Tektronix 5T1A Instrument Reference Book page 71

FACTORY CALIBRATION PROCEDURE
CONTENTS:
General C+805
Circuit specifications C-807
Calibration C-809
INTRODUCTION:
This isn't a field recalibration procedure as is the
procedure in your instruction manual, This is a
guide in calibrating brand-new instruments, just
assembled instruments that have never been turned
on before, Therefore it calls out many p¢ocedures
and adjustments that are rarely req
sequent recalibration.
Publication:
061-832
February 1963
Even though we wrote this pr,
our own factory test depax
others also if used with
our current catalOx
in our test depé? For 5T1A only, all serial num-
bers, not for 5T1.,
ity, devise alternate ap-
pecial test equipment your-
2. Factory uit specifications are not guaranteed unless they also appear as catalog
or instruction manual specifications. Factory circuit specs usually are tighter than adver-
tised specs. This helps insure the instrument will meet or exceed advertised specs after
shipment and during subsequent field recalibrations over several years of use, Your
instrument may not meet factory circuit specs but should meet catalog or instruction
manual specs,
3. Presetting internal adjustments, if mentioned, usually is unnecessary. This is help-
ful for "first-time" calibration only. If internal adjustments are preset, you'll have to
perform a 100% recalibration, So don't preset them unless you're certain a "start-from-
scratch" policy is the best,
In this procedure, all front panel controls for the instrument under test are in capital
letters (SENSITIVITY) and internal adjustments are capitalized only (Gain Adj).
STA FCP 2-11-63 | _5TIA CALIBRATION