Teletype 28 - Page 97

ISS 8, SECTION 573-118-700TC
3. 17 Contact Timing Measurements for Auxiliary Timing Contacts (continued)
(2) Requirement (front contact)
Connect neon trace to both sides of front contact. With unit receiving LETTERS
code combinations, observe trace.
(a) Break in trace to indicate break before make
Min 10 divisions
(b) Between earliest starts of traces of right and left (normally open and normally
closed) sides of contact
Min 325 divisions---Max 420 divisions
(c) Bounce should end within maximum 5 divisions of earliest start and latest end of
any trace.
To Adjust
(a) If timing requirements under (1) (a), (b), (c), and (2) (a), and (b) are not met,
refine CONTACT BRACKET (3.08) adjustment and/or RIGHT CONTACT GAP,
LEFT CONTACT GAP, SWINGER CONTACT SPRING, and LEFT CONTACT
SPRING
(3. 10) adjustments.
(b) If bounce requirements under (1) (d) and (2) (c) are not met, refine SWINGER
CONTACT SPRING and
LEFT CONTACT SPRING tensions (3. 10).
(c)
If any refinements are necessary, repeat complete test procedure.
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