Harman Martin VC-Dot Series, User Manual

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System planning and installation 9
Martin™ can manufacture VC-Dot strings with non-standard Dot pitches to special order. Please consult
your Martin™ supplier for details.
It is possible for the user to reduce or increase the Dot pitch of a string by removing or inserting lengths of
VC-Dot ribbon cable between Dots (see ”Modifying Dot pitch and splicing VC-Dot strings” later in this
section).
If you increase Dot pitch (make a string longer by inserting lengths of ribbon cable between Dots), or if you
place a special order for strings with increased Dot pitch from Martin™, the maximum number of Dots on
the string is reduced. Table 2 gives the limits at different Dot pitches for the number of Dots on one string.
Do not exceed these limits:
Note that, if you increase Dot pitch yourself, you may have to remove Dots from the strings supplied by
Martin™ in order to stay within safe limits.
VC-Dot 1: maximum number of Dots per string
Lead-in cable length: 2000
Dot pitch (cable length between Dots on string) 50 100 200 300 400 500 600 700 800 900 1000
Maximum number of Dots per string connected to one
VC-Feeder
100 100 100 100 100 100 100 100 100 95 90
Lead-in cable length: 5000
Dot pitch (cable length between Dots on string) 50 100 200 300 400 500 600 700 800 900 1000
Maximum number of Dots per string connected to one
VC-Feeder
100 100 100 100 100 100 100 100 96 91 87
VC-Dot 4: maximum number of Dots per string
Lead-in cable length: 2000
Dot pitch (cable length between Dots on string) 100 200 400 600 800 1000 1200 1400 1600 1800 2000
Maximum number of Dots per string connected to one
VC-Feeder
64 64 64 64 64 59 54 51 48 45 43
Lead-in cable length: 5000
Dot pitch (cable length between Dots on string) 100 200 400 600 800 1000 1200 1400 1600 1800 2000
Maximum number of Dots per string connected to one
VC-Feeder
64 64 64 64 64 56 52 49 46 43 41
VC-Dot 9: maximum number of Dots per string
Lead-in cable length: 2000
Dot pitch (cable length between Dots on string) 100 200 400 600 800 1000 1200 1400 1600 1800 2000
Maximum number of Dots per string connected to one
VC-Feeder
36 36 36 35 31 29 26 25 23 22 21
Lead-in cable length: 5000
Dot pitch (cable length between Dots on string) 100 200 400 600 800 1000 1200 1400 1600 1800 2000
Maximum number of Dots per string connected to one
VC-Feeder
36 36 36 31 28 26 24 23 21 20 20
All lengths are given in millimeters
Table 2. Dot pitch and maximum number of Dots per string
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