Board Vertical positions			29.4.1999

PCB thicknesses and gaps (in millimeters) are:

type	baseplate  gap-I  HVboard  gap-II  HVboard  gap-III

5s(1)	   0.8      2.5      1.1     3.2       /        / 
5d, 5s(2)  0.8      2.5      1.1     4.0      1.1      3.1 
10s	   2.4      5.5      1.6     5.6       /        /
10d	   2.4      5.5      1.6     6.0      1.6      8.1

Grounding pin lengths are:

type	lower pin    upper pin   pin No.

5s(1)	   2.5          5.5*	  1  3*
5d, 5s(2)  2.5	        7.5       1  2
10s        5.5          5.5       3  3
10d        5.5         15.0	  3  ordinary connector pin

* for 5s(1) the gap-II is smaller than connector hight, thus pin No.3 is used.
Upper pins are for .5 to 1 mm shorter than the gap width.

5s(1) boards for single layer 5 mm chambers.
5s(2) boards for two-fold single layer 5 mm chambers.

For 10mm two-fold single layer chambers two 10s boards are used as there is enough
space and both layers are wired separately. Here the grounding pins are:

	       type   lower pin    upper pin   pin No.

upper board    10s         /          5.5       /  3
lower board    10s	  5.5 	      7.5       3  2

The small nose on top of the pin No.2 (7.5mm) has to be cutted. The ground connection
and the fixation of the upper board is achieved by soldering between No.2 pin of the
lower board and the ground strip of the upper board.

See also drawings:
    solder_gnd_10mm-ts.ps	... for 10mm two-fold single chambers 
    solder_gnd_10mm.ps		... for 10mm single and double chambers 
    solder_gnd_5mm.ps		... for all 5mm chambers 
    board_positons.ps		... front views of all cases