Table of Contents
Advertisement
3.08
Code Reading Contacts (continued)
C ONTACT SWINGER - SENSING ARM
CLEARANCE (STROBING)
Note
1:
When strobing the code reading
contacts, use a DXD scale whose unit cor
responds to that of the unit being checked.
Refer to Contact Operating Require-
ments Table.
The signal generator on
the transmitter distributor must be syn
chronized with the DXD so that the end of
the stop pulse image is in line with the end
of the stop pulse on the DXD scale when
transmission is continuous.
signal line direct current of
20
rna
.±.10%
to strobe the contacts.
Unit
Levels
Code
Scale
Segment
5
7.00
Pulse
7.42
Pulse
5
6
8.50
Pulse
2:
Note
After making the adjustment, check
clearance between contact swinger and in
sulator on the contact sensing arm when a
BLANK combination has been selected and
the main shaft rotated to place the sensing
arms in their highest position. There must
be some clearance.
cannot be met, recheck initial mechanical
adjustments.
Use a normal
60
rna
.±.10%
or
CONTACT OPERAT ING REQUIREMENTS TABLE
Beginning Pulse
Scale
Tolerance
(Div)
Division
1
25
.±.20
1
30
.±.
20
0
45
.±.25
If the requirements
ISS 5, SECTION 573-127-703
(1)
Requirement
Contacts must open and close within
the range specified on the Contact
Operating Requirements Table.
(2)
Requirement
Breaks in the pulses must be confined
to the first and last
trace.
End of Pulse
Scale
Scale
Tolerance
Division
Segment
15
Pulse
5
40
Pulse
5
5
Pulse
5
To Adjust
Loosen contact bracket mounting screws.
Position bracket to meet requirements.
Retighten contact bracket mounting
screws.
10
divisions of ,the
Pulse
Max.
Length O sc
(Div)
(Div)
+20
3
.±.20
3
_2:25
4
Page
41
Advertisement
Table of Contents
