Bell 28E Adjustments page 30

SECTION 573-127-703
Note: On units equipped with signal regener­
ators, remove regenerator circuit card be­
fore app lying test set probes to contact ac­
cess terminals.
CAUTION: APPLYING OPERATING VOLT­
AGE OF DISTORTION TEST SET DIRECTLY
TO GOLD-PLATED CONTACTS MAY MAKE
PULSE
RANGE
STOP PULSE
r
START PULSE
PULSE 1
PULSE 2
PULSE 3
PULSE 4
PULSE 5
L
ALLOWABLE
BREAK WIDTH
*Ranges specified apply only for test sets
Page 3 0
PULSE DATA TABLE
FIVE - LEVEL UNITS, 7.00 UNIT CODE
MARKING
*NOMINAL TOLERANCE
( )
36 STOP BEGIN ±5 DIV
TO
( )
142
STOP END
( )
142 BEGIN -t:5 DIV
STOP
TO
( )
6 ONE
END
( )
6 ONE
BEGIN +5 DIV
TO
( )
12
END
TWO
( )
12 BEGIN 15 DIV
TWO
TO
( )
18
THREE END
( )
18 BEGIN i5 DIV
THREE
TO
( )
24
FOUR END
( )
24 BEG IN t: 5 DIV
FOUR
TO
( )
30 FIVE END
( )
BEGIN r5 DIV
30 FIVE
TO
( )
36 STOP END
1 DIV
MUST FALL WITHIN
PULSE TOLERANCE
THEM UNSUITABLE FOR LOW-VOLTAGE
APPLICATIONS.
SERVICING INSTRUCTIONS.
2. 29 Follow the general procedure outlined in
Paragraphs 2. 27 and 2. 28 substituting the
appropriate data from the following table.
*NOMINAL
(
36 STOP
TO
(
±:1/2 DIV 142
START
(
142
STOP
TO
(
-t:5 DIV
6 ONE
(
6 ONE
TO
(
12
"5 DIV TWO
(
12
TWO
TO
(
+:5 DIV 18
THREE
(
18
THREE
TO
(
24
r-5 DIV
FOUR
(
24
FOUR
TO
(
+5 DIV
30 FIVE
(
30 FIVE
TO
(
r-5 DIV
36 STOP
1 DIV
( )
having a 7, 42 unit code scale.
DXD
1.12
REFER TO
SPACING
TOLERANCE
)
BEGIN +6 DIV
)
112 DIV
END
-t
)
BEGIN ±6 DIV
)
END -5, -H3 DIV
)
BEGIN +6 DIV
)
-5, +6 DIV
END
)
BEGIN ±6 DIV
)
END -5, -H3 DIV
)
BEGIN +6 DIV
)
END -5, -H3 DIV
)
BEGIN '6 DIV
)
END -5, -t-6 D IV
)
BEGIN t-6 DIV
)
END -5, +6 DIV
MUST FALL WITHIN
PULSE TOLERANCE
F O R