Grass Valley Performer SD - Manual (Page 76)

2-44
Section 2 — Installation
Polling Address, Non GVG TEN-XL ASCII Protocols
To determine a polling address, each segment of switch S1 is
assigned a value from 1 through 128. When the segment is
closed ,
that value is added into the polling address. In the example below,
the value of each segment is shown above the switch.
For SMPTE-45 protocol addressing, a value of 40 (28H) or more
must be used or the address will be invalid. The remaining
segments are then ABCDEFG. If the (tributary) address is
1000ABCD EFGH000P, P is 1 when polling and 0 when selecting.
Polling Address, GVG TEN-XL ASCII Protocol
This protocol divides the address switch segments into two
groups of four each (1, 2, 3, 4) and (5, 6, 7, 8). Each group assigns,
in binary, an address digit from 0 to 9. Digits larger than nine are
invalid. Thus, the highest valid address is 99. Segments 1 - 4 assign
the first, or most significant, digit. Segments 5 - 8 assign the
second, or least significant, digit. See the illustration below.
OPEN
1 2 3 4 5 6 7 8
Dot indicates switch segment is down on that side.
S1
128
16
4
148
128 64 32 16 8 4 2 1
=Sample Address
OPEN
1 2 3 4 5 6 7 8
Dot indicates switch segment is down on that side.
S1
When using a TNX-SCP in
X-Y mode, address must
be between 0 and 9
inclusive.
8 4 2 1 8 4 2 1
1st digit:
1 + 2 = 3
2nd digit:
2+4 = 6
Address = 36