3M DELTA Series - Test Tapes

831-0280-003 28 pin double-sided for Play-
Logic cards
E. TEST TAPES
Test tapes should be carefully chosen to suit your
particular needs. ITC cautions that the use of a par 
ticular test tape may indicate performance slightly
different from that of the factory setup. ITC uses
commonly available test tapes in an effort to adjust
each machine to a known in-field standard.
We will be glad to discuss test tape require 
ments. Should you have questions or need assis 
tance in choosing the correct format, call ITC Tech 
nical Service.
1. Purchase tapes loaded into a cartridge "shell" of
the same type you normally use in your ma 
chine,
2. Use only ONE test tape throughout your car 
tridge system. This insures accurate and repeat 
able head adjustments and frequency response
from machine to machine.
3. Use the same test tape to perform head align 
ment and frequency response. If one cartridge is
used for head phasing (azimuth) and a different
cartridge is used for frequency response adjust 
ments, errors will result.
4. Store tapes in a cool, dry, non-magnetic envi 
ronment.
5. Discard a test tape when it begins to show signs
of high frequency deterioration, instability, or
non-repeatable performance.
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