Tektronix 1A1, Instruction Manual

Page: 46 / 137

Maintenance— Type 1A1
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Signal to PULL FOR
INVERT Sw. (CH 1)
— 0
0
+ 3 9 v H © 0
Signal to PULL FOR
INVERT Sw. (CH I I
■*" E ]
To INVERT BALANCE (CH 1 ).via
Signal from PULL FOR
INVERT Sw. (CH 1)
.05 V /C M DC BAL (CH 1)
—
0
- « " 0
Input Circuit Board Pin ‘F
(CH 1)
CH 1 TRIGGER OUT Con.
Pin 5, Interconnecting Plug
.005 V /C M VAR ATTEN
BAL (CH 1)
R139 (CH 1 Atten. Chassis)-
.005 V /C M VAR ATTEN.
BAL (CH 1)
Hi 0
00
0 0
0
0 0
" 1 0
’ 5 1 0
MJ 0
131
0 0
771[
m
}
Q -
+
10 0
»
Index Key Index Key
+ 5v
From Pin 18 |]~
Output Board C onT^-
l
Input Circuit Board ^ i 5
Pin ‘C (CH 1) f =
.0 5 V /C M DC
(CH 1 ) W iper
BAL
Arm
FRONT
[
22
I [ T l — ► Signal to PULL FOR
t z f
'
------ INVERT Sw (CH 2)
0 0
S 0
0 0
0
[ 7 1 — ► S ig n a l to PULL FOR
_____ 1 ■ --* IM V F D T S w f C H 21
0 0
0 1
-----
1
via
10
ll>IVEKI BALANCE
T 4 — ► Signal to PULL FOR
------ INVERT Sw (CH 2)
1 1 5 | | S [ — ► .0 5 V /C M DC BAL (CH 2)
+
0 0
00
Index Key
£77]
[
m
} - ^ . Q 5 V /C M DC BAL (CH 2 )
[To] I
L
I ►
Pin ‘F1 Input Circuit Board
'----- ' ----- 1 (CH 2)
| 9 | | K f
— ► .0 5 V /C M DC BAL
From Pin 5 | f 7 1 (— | (CH 2) W iper Arm
Output Board Con. ^ * ___| |___ |
POSITION (CH 1) - 4 0 0 U ^ pin *c ’ ' " ^
h
“ r " Board
INVERT Sw. (CH 2)
To INVERT BALANCE (CH 2)
Signal to PULL FOR
INVERT Sw (CH 2)
>5 V /l
• 11 v
-PO SITIO N (CH 2 )
.00 5 V /C M VAR ATTEN
BAL (CH 21
.0 0 5 V /C M VAR ATTEN
BAL (CH 2)
O S —
'
□ 0 — R239 (CH 2 Atten Chassis)
0 0 H - + 2 2 5
□ 0
Channel 1 Card
Connector
Channel 2 Card
Connector
5-12
Fig. 5 -4 . Circuit card connector top view.