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HP 5061A Service manual

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MANUAL
CHANGES
April
21,
1980
CHANGE
DATE:
MANUAL
DESCRIPTION
INSTRUMENT:
SERIAL
PREFIX:
1,2,3,4,
5,6, ,8
1816A
1908
A
1
A5
Series
1916
1840A
1.2
A5
Series
1840
1936
A
3
1
thru
11
1940
A
A2
Series
1848
4
1
thru
12
1948A
1852A
1
thru
13
2002A
1904
A
A5
Series
1904
3.
5061A-1
5061
A-2
5061
A-3
5061
A-4
5061
A-6
5061
A-
5061
A-8
NOTE
—
THE
FOLLOWING
ERRATA
APPLIES
ONLY
TO
INSTRUMENTS
WITH
SERIAL
PREFIX
NUMBER
1740A.
1 R/S/T/U
—
859- 860- 865/ 883/88 8/88 / 894/ 893/889 -8901/8942/8926-9825/9652/9669/E/
DATE
PRINTED:
HP
PART
NO:
MICROFICHE
NO:
IF
YOUR
INSTRUMENT
HAS
SERIAL
PREFIX
OR
SERIAL
NUMBER
JUN
19 8
05061-9052
05061-9053
MAKE
THE
FOLLOWING
CHANGES
TO
YOUR
MANUAL
(This
change
supersedes
all
earlier
dated
changes)
•
Make
all
changes
listed
as
ERRATA.
©
Check
the
following
table
for
your
instrument
’
s
serial
prefix
or
serial
number
and
make
listed
change(s)
to
manual.
MAKE
THE
FOLLOWING
CHANGES
TO
YOUR
MANUAL
HEWLETT
PACKARD
5061A
Cesium
Beam
Frequency
Standard
Operating
and
Service
Manual
1 40
A
□
NEW
OR
REVISED
ITEM
The
following
Service
Notes
are
available
from
your
local
HP
Sales
and
Service
Office.
Service
Note
No.
1.2,3,
4,5
1.2,3,4,5,6
Description
Improve
Decade
Divider
IC4
in
Synthesizer
A1
Preferred
Replacement
Parts
that
Increase
Reliability
Cesium
Oven
Controller
Circuit
Modification
Increasing
Reliability
and
Tunability
of
Harmonic
Generator
Assembly
(A4)
Installation
of
Hot
Wire
Ionizer
Current
Limit
Resistors
Summary
of
Important
Circuit
Changes,
Procedures
and
Replacement
Parts
Modification
for
Improved
Short
Term
Stability
3,
thru
1
thru
10
IF
YOUR
INSTRUMENT
HAS
SERIAL
PREFIX
OR
SERIAL
NUMBER
ERRATA
Page
8-5,
Figure
8-5,
Wiring
Diagram:
Add
“
(Serial
Prefix
1816Ai
”
to
caption.
Page
8-35,
Figure
8-20,
A9
Schematic
Diagram:
Change
SERIES
numbers
for
A9
and
A9A1
to
1816.
Page
8-55,
Figure
8-30,
A1
Schematic
Diagram:
Add
“
(SERIES
1 401
”
to
A1
description
on
bottom
edge
of
diagram.
Page
8-5,
Figure
8-5,
Wiring
Diagram:
Replace
with
attached
Figure
1
Signal
Wiring
Diagram
(Serial
Prefix
1 40A).
Page
8-35,
Figure
8-20,
A9
Schematic
Diagram:
Replace
with
attached
Figure
2.
A9
(05061-6134
SERIES
1 40)
Schematic
Diagram.
Page
8-55,
Figure
8-30,
A1
Schematic
Diagram:
Change
output
from
terminal
4
to
“
TO
S2B
(4,
6,
11,12)
MODE
”
.
Changeout
put
from
terminal
22
to
“
TO
SB2
(2,
3)
MODE
”
.
MANUAL
CHANGES
MODEL
5061A
Page
2
ERRATA
(Continu d)
the
battery
will
charge
for
13
to
are
transposed.
on
during
the
charge
cycle.'
Page
6-28,
Table
6-1,
Replaceable
Parts:
Change
HP
and
Mfr
Part
Number
for
KIT:RACK
MOUNT
from
5060-0
to
5060-8 42.
Page
6-18,
Table
6-1,
A11
Replaceable
Parts:
Change
A11A1R33
and
R34
to
0811-3288;
R:
FXD
WW
0.025(1
10%
2W;
28480;
0811-3288.
Page
8-45,
Figure
8-25,
A11
(05061-6009)
Schematic
Diagram:
Change
values
of
A11A1R33
and
R34
to
0.025
ohms.
Title
Page
(inside
front
cover):
Change
paragraph
under
“
SERIAL
PREFIX:
1 40A
”
to
the
following:
This
manual
applies
directly
to
HP
Model
5061A
Cesium
Beam
Frequency
Standards
having
Serial
Prefix
1 40A.
Page
3- ,
NOTE
following
paragraph
3-14.
c:
Change
second
sentence
to:
"Thus,
when
the
instrument
is
initially
turned
on,
18
hours
and
the
BATTERY
light
will
be
on
during
the
charge
cycle.
”
Page
5-40,
Paragraph
5-234,
fifth
line:
Change
"A15R30
and
A15R31
”
to
A15R33
and
A15R34.
Page
5-40,
Paragraph
5-236,
second
and
third
lines:
Change
"P+50V)"
to
"(=50V)
”
.
Change
"A15R30
and
A15R31
”
to
A15R33
and
A15R34.
Page
5-40,
Paragraph
5-239:
Change
to
the
following:
If
assembly
A19
is
replaced,
resistors
A15R33
and
A15R34
on
Power
Regulator
Assembly
A15
must
be
changed.
Refer
to
paragraph
"5-186.
ELECTRON
MULTIPLIER
VOLTAGE
ADJUST
(A15R33,
A15R34).
”
for
procedure.
Page
5-41,
Paragraph
2-254,
second
line:
Change
sixth
word
to
“
operating
”
.
Page
5-43,
Paragraph
5-260,
step
c:
Change
“
18
to
21
”
to
"13
to
18
”
.
Page
5-43,
Paragraph
5-260,
step
d:
Change
"bread
”
to
"lead
”
.
Page
5-43,
Paragraph
5-262:
Complete
second
sentence
to
read
as
follows:
“
To
isolate
the
the
trouble
circuit,
perform
following
checks
in
order
given:
1)
Timing
Oscillator
(Paragraph
5-268),
2)
Decades
(Paragraph
5-2 1),
3)
Reset
Preset
(Para

graph
5-26 )
and
4)
Logic
Comparator
(Paragraph
5-269).
”
Page
6-33,
Table
6-3,
Option
001
Miscellaneous
Replaceable
Parts:
Change
05061-6061
to
W26;
05061-6104;
CABLE
ASSY:
FREQUENCY
DIVIDER;
28480;
05061-6104.
Add
in
"Reference
Designation
”
column.
W2
for
05061-6062
cable
assembly.
W31
for
05061-6068
cable
assembly.
W32
for
05061-6069
cable
assembly.
Page
8-11,
Figure
8-9,
Al
Schematic
Diagram:
Reference
designators
for
C31,
C32;
CR36,
CR3 ;
and
R 2,
R 3
;
Change
C31
to
C32
and
C32
to
C31.
Change
CR36
to
CR3
and
CR3
to
CR36.
Change
R 2
to
R 3
and
R 3
to
R 2.
Delete
A1C39
capacitor
(2500
pF)
in
the
drain
circuit
of
FET
Q3.
Page
8-53,
Figure
8-29,
A16A1
Schematic
Diagram:
Add
"CR4
”
label
to
diode
between
U2
and
CIO
in
A16A1
component
locator
illustration.
Change
A16A1
schematic
diagram
by
transposing
A16R14
and
A14C12.
Capacitor
C12
connects
between
U2(9)
and
one
end
of
R14.
The
other
end
of
R14
goes
to
circuit
board
common.
Remove
connection
between
A16A1Q3
collector
and
A16A1U2
pins
11
and
14.
Add
connection
between
cir

cuit
board
common
and
A16A1U2
pins
11
and
14.
Page
6-33,
Table
6-3,
Option
001
Replaceable
Parts:
Add
A5;
05061-6118;
MODULE
ASSY:
DIGITAL
DIVIDER.
Page
6-30,
Table
6-2,
Option
002
Replaceable
Parts:
Change
"Description
”
for
BT1
to
BATTERY
24V
2.2A-HR
NI-CD
WITH
FLEX
LEADS;
28480;
1420-0053.
Page
8-19,
Figure
8-13,
A5
BLOCK
DIAGRAM:
Change
A5
DIGITAL
DIVIDER
ASSY
part
number
(top
of
diagram)
from
05061-6011
to
05061-6118.
Change
A5A1
POWER
SUPPLY
part
number
from
05061-6015
to
05061-6114.
MANUAL
CHANGES
MODEL
5061A
Page
3
J
16
JIT
BRN
HEATER
ELECTRON
MULTIPLIER
55M
BRN-ORN
HEATER
TO
AI5(5)
COMMON
WHT-ORN
HOT
WIRE
IONIZER
J2 J6
£
LF
coil
5
ORN-WHT
HOT
WIRE
IONIZER
5
W7
J3
15
C
FIELD
SIGNAL
T
4
JI
14
THERMISTOR
J5
J4
COMMON
T< >T
9
WHT-RED
IO
W2I
J2
2SYNTH2
J3
W8
I3 HZ
WHT-BRN-YEL
B
3
22
21
BLU
TO
AI (
13)
J3
J2
MULT
JI
RED
JI
R
J3
SWEEP
OUTPUT
J2
I37HZ
BRN
q
WHT-RED
19
J4
J2
WHT-RED
W4
+I8.7V(A>
W-R
20
ON
o-
J5
=
WHT-YEL-GRY
OFF
J6
6
AI7(34)
>
TP
I
WHT-ORN-GRY
GRN
A
1
7(33)
GRN
>
WHT
W5
WHT-RED-BLU
o
7-1
V
-EFC
WHT-BRN
■o
TO
AI7
17)
--0
|
COARSE
|
O
O
WHT-BRN-YEL
8
>
RED
-O
TP2
C,OFF
O
WHT-RED
JI
+
I6V
J2(3)
J2(6)
|
LOOP
OPEN~~|
A>-1
3
o
3
-I6V
J2(8)
J2(9)
■Q
OPER
WHT-RED
'
ol
olJ
42(5)
LTC
5.
J2(4)
_8
O
BLK
WHT-BRN-YEL
AI (3)
J
T
■O
AITTP
I'CONTROL'
WHT-RED-BLU
■O
WHT-BRN-GRY
,1
I
2
12
Figure
1.
Signa
Wiring
Diagram
(Seria
Prefix
1740A)
k
MOD
S5
TO
SIA(9)
(METER)
AI2PI7
*2
H-
O
’
4
£Ft
WHT-
RED
+25V
TO
+33V
FROM
AI7(40)
+25V
TO
+33V
FROM
AIT(4I)
AI2PI6
BRN
OSC
OVEN
I
I
AI2
CESIUM
BEAM
TUBE
+25V
TO
+33V
TO
AI7(47)
+I8.7V(A)
TO
AI7(39)
+I8.7V(D)
TO
AI7 49)
*
R2
I7.8K
ZEEMAN
MOD
INPUT
R4
I
OK
TEST
SIGNALS
FROM
Al
I
JI
(22)
CESIUM
OVEN
CONTROLLER
FROM
Al
IJI(2O)
FROM
Al
I
JI
(23)
+I8.7V(A)
FROM
AI7(48)
AI7R9
200K
AI7RI
IK
R5
IOOK
A8
PHASE
DETECTOR
A9
OPERATIONAL
AMPLIFIER
R6
I2M
TO
SIA(8)
TO
Ml
THRU
SIB(8)
BEAM
I
METER
ADJ
AI4
LOGIC
CIRCUIT
+I8.7V(B)
FROM
A1
7(37>
+I8.7V(A)
FROM
AI7(50)
+
I
8.7V(
A
)
FROM
AI7(49)
+I8.7V(B)
FROM
AI7(37)
FROM
Al
IJI(I5,I6)
FROM
AI
I
J
I
(
IT,IB)
FROM
AI7(21
)
FROM
AI7(29)
FROM
Al
IJI(I3)
WHT-
GRY
5MHZ
TO
AI3J2
BUFFER
AMPL
FROM
AI9(4)
-2500VDC
POWER
SUPPLY
4*
P3
+I8.7V
FROM
A
17(43)
A3
MULTIPLIER
AIO
OSCILLATOR
A4
HARMONIC
GENERATOR
JI
R3
1
20K
f
+18.
7V
TO
AI7(37)
W-R
JI
L2
4MH
A7
AC
AMPLIFIER
ALARM
I
1
—
!
§
!
C2
8UF
20,21
BLK
FROM
A' (38)
+I8. V(D)
<>L
I
I
_90MHZ
W23
T
,
WI4
>T-e-
'
1
BLK
•T
W3
WIO
W9
W22
T
wht
-
red
q
blk
AI7(54)
A
17(22)
W30
WIT
t
WHT-ORN
A
17(3
I
)
(GREEN)
W28
T
TP3
TP4
T
-IOV
FROM
AlIJI(6)
|
PHASE
DETECTOR
OUT
WHT-VIO
A
17(32)
(AM8ER)
A
17(5)
-
M
+20V
RED
W29
WHT-
I
ORN
+
I5V
WHT-
BRN-
_
GRN
WBG
WHT-
BRN-
_
BLU
WBB
A
17(4)
□3
|
LOGIC
RESET
|
BLK
J7
P3
IV
+24V
5MHZ
FROM
AI3JI
BUFFER
AMPL
“
TT
I
15VAC
TWISTED
PAIR
■
TO
A6J6
FREQUENCY
DIVIDER
TO
AI5(6)
E.M.REGULATOR
RETURN
Al
SYNTHESIZER
+18.
7V
FROM
AI7145)
+18.
7V
FROM
A
17(44)
+I8.7V(D)
FROM
AI7(53)
a
X
o
1
o
I
_
S2B
WHITE
DOT
ON
COAX
.rJRT
CW2
250K
|
WHT-
GRN
SYNTH
TEST
POINT
AIT(TPT)
W-R
WHT-
I
RED
|
WI5
+I8.7VID)
FROM
AI7(38)
11
P2
+EFC
g274HZ
I
I
----
1.2
>4
----
k
Al
k
5
J2
-Q-
C
control
Z
CONTROL
VOLTAGE
TEST
SIGNALS
AC
'
J
15
J3
3,8
|GRY.
'
YEL
ii
S2C
-Lp
—
r*o
s
DIV
P4
I
E
W6
_>X
L
d
£GAUSS2
DEGAUSSING
COIL
I
TO
JIS
OPT
004
ONLY
„
F
PINS
G.H
1
FROM
A1
8(5)
1
+3500VDC
1
POWER
SUPPLY
;
p
I
MODE
|
S2
Q
l
S2A
-V-L
T<
1.2
<-r
c
,
I
BRN-WT
T<
6.2
<
T
------
'
BLR
Y
-H
S2B
■k)
■
;
K
)
TO
AIT(
I
I)
I
2ND
I
|
HARMONIC
|
rxicr
T1i
~|
0)
*
Rl
7500
z
2ND
HARMONIC
ERROR
SIGNAL
SIGNAL
|
--
*•
JI8(K)
|
WHT-RED-YEL
WHT-YEL-VIO
i
►
JI8(J)
”
"P
1000
I
CONTINUOUS
I
|
OPERATION
I
MANUAL
CHANGES
MODEL
5061A
Page
5
|
CS
OFF
I
O
TP5
TP4
WHT
-e-
o
LTC
O
!
o
/77
I
L
L___
---
1
TP3
A9AI
(WHT/RED/YEL)
+
I5V
TP
I
(WHT/YEL/VIO)
-I5V
NC
+300V
II
AI7(3)
-300V
BLK
CHASSIS
O
+
I5V
GRN
(WHT/BLU~)
OUT
>-©■
CRI
CR2
(WHT/BLK)
rh
BLU
L
+
I5V
7
Lr
2
U2
OUT
3
-I5V
P2
DC
SIGNAL
FROM
PHASE
DETECTOR
A8J6
R6
*
I2M
R5
I00K
+
I6V
Al
I
8>
-I6V
Al
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J
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OPERATIONAL
AMPL
IFIER
CIRCUIT
BO
ARD
ASSEMBLY
(0S06I
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35)
(
SERIES
I74O)
Rl
75
R2
75A.
TEFLON
STAND-OFF
INSULATOR
R3
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R5
200K
R4
200K
R6
200K
C3
30PF
AI7TPI
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AI7R9
200K
A
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CONTROL
VOLTAGE
TO
AI4(2)
TO
SIA(9)
METER
C
ontrol
:
ci
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CESIUM
OVEN
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CONTROL
VOLTAGE
TO
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OPERATIONAL
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i
MANUAL
CHANCES
MODEL
5061A
Page
Change
A1 R2*
to
0 5 -0962;
Change
A1 R3*
to
0 5 -0959;
Change
A1 R4*
to
0 5 -09 2;
Change
A1 R *
to
0698-345 ;
Page
8-55,
Figure
8-30,
A1
Schematic
Diagram:
Change
R2*
to
39K.
Change
R3*
to
30K.
Change
R4*
and
R9*
to
100K.
Change
R *
to
316K.
Page
5-10,
Table
5-3,
Assembly
Designations:
Change
A16
part
number
05061-60125
to
05061-6125
and
part
number
05061-60136
to
05061-6136.
Page
5-2 ,
Paragraph
159,
Cesium
Tube
05061-60
Specifications:
Change
Peak
beam
current
to
equal
0.8
X
10-8A.
Page
5-29,
Paragraph
5- 0:
Delete
first
three
sentences
(approximately
8
2/3
lines).
Page
5-30,
Paragraph
5-1 1b,
third
line:
Add
"de
”
between
"impedance"
and
"voltmeter
”
.
Page
5-30,
Paragraph
5-1 1k:
Change
power
of
10
in
formula
from
"1013
”
to
"10-13
”
.
Page
6-1 ,
Table
6-1,
All
Replaceable
Parts:
Change
A11Q5
and
Q6
from
1854-0613
to
05061-8013
in
HP
Part
Number
column.
Page
6-30
thru
6-32,
Table
6-2,
Option
002
Replaceable
Parts:
Add
"(SERIES
1 36)
”
to
Description
for
A2.
Add
an
asterisk
(*)
beside
A2R2
and
A2R64
reference
designations.
Change
“
Mfr
Part
Number
”
for
A2C
to
150D10 X903052.
Page
8-13,
Figure
8-10,
A2
Schematic
Diagram:
Change
A2
series
number,
at
top
of
diagram
to
1 36.
Add
an
asterisk
(*)
beside
A2R2
and
A2R64
reference
designators.
Page
-1,
Table
-1,
Manua
Backdating:
Change
second
entry
in
left-hand
column
to
the
following:
"1 24A
(-0138
and
below
except
-013 8,
-013 9,
or
-01384)
with
series
1 36
circuit
board
for
A2
in
Option
002
or
003.
”
Page
-2,
CHANCE
2:
Change
CHANGE
2
to
the
following:
Page
6-30,
Table
6-2,
Option
002
Replaceable
Parts:
Change
A2
series
number
from
1 36
to
1512A.
Change
A2CR5
from
1902-0041
to
1902-05 9.
Page
8-13,
Figure
8-10:
Change
Series
No.
(at
top
of
diagram)
from
1 36
to
1512A.
Delete
asterisk
(*)
beside
R2
and
R64.
Page
2-2,
Paragraph
2-14,
Second
sentence:
Change
sentence
to
read
"Parts
necessary
to
convert
the
instrument
for
rack
mounting
are
available
as
a
kit.
Page
8-55,
Figure
8-30,
A1
Wiring
Diagram:
Change
A1
terminal
3
connection
to
MODE
switch
"from
S2B( ,8)
”
to
"from
S2A( ,8)
”
.
Page
1-3,
Table
1-1,
Specifications:
Change
POWER:
to
115V
±10%,
48-440
Hz;
230V
±10%,
48-66
Hz;
or
22
to
30V
de.
Page
8-11,
Figure
8-9,
Al
Schematic
Diagram:
Change
Al
part
number
from
05061-608
to
05061-609
and
A1A1
from
05061-6088
to
05061-6098.
Page
5-13,
Figure
5-6,
Synthesizer
Operational
Check
Setup:
Change
model
number
of
HP
counter
to
5345A.
ERRATA
(Continu d)
Page
8-21,
Figure
8-14,
Part
of
A5
Schematic
Diagram;
Page
8-23,
Figure
8-15,
Part
of
A5
Schematic
Diagram;
and
Page
8-25,
Figure
8-16,
Part
of
A5
Schematic
Diagram:
Change
A5
part
number
shown
on
top
of
diagrams
from
05061-6011
to
05061-6118.
Page
6-23,
Table
6-1,
A1
(05061-6018)
Replaceable
Parts:
~
R:
FXD
ELM
39K
2%
.125W;
28480;
0 5 -0962.
R:
FXD
FLM
30K
2%
.125W;
28480;
0 5 -0959.
R:
FXD
FLM
100K
2%
.125W;
28480;
0 5 -09 2.
R:
FXD
FLM
316K
1%
.125W;
28480;
0698-345 .
■0
MANUAL
CHANCES
MODEL
5061A
Page
8
j.
k.
I.
m.
n.
o.
P-
q-
8
9
10
12
13
14
beam
current
indi-
until
current
is
halfway
—
"
"
r
making
the
that
the
peak
indication
is
obtained
when
the
'
"
t
one
encountered
as
and
then
cw
to
t.._
to
a
peak
of
lower
peak
indication
on
t>>«.
«
was
adjusted
to
±0.1
Hz
of
5
MHz,
do
the
ERRATA
(Continued)
ss
*.
...»
.....
h.
i.
line
between
A13J2
and
A3J3.
line
between
A13J1
and
A1J1.
line
between
A1J3
and
JT5
SYNTH.
line
between
A11J1
(15-18)
and
A12.
OVEN
POWER
line
between
A11
and
A12.
Push
A4
attenuator
halfway
in
and
lock
in
place.
Adjust
A4R1
completely
ccw,
then
carefully
cw
for
a
peak
indicatio
noni
the
de
volt
'JJ^a^between
the
halfway
between
peak
and
background.
Adjust
A4
cavity
tuning
control
(see
Figure
5- )
for
a
peak
indication
on
the
de
voltmeter.
Tighten
the
cavity
Tuning
Control
Lock.
If
in
step
d.,
the
oscillator
frequency
first
part
of
step
d.
Keen
locknut
snug
and
adjust
A4S5
for
a
peak
indication
on
the
de
voltmeter.
Be
sure
cation
never
exceeds
5%
of
the
peak
value
noted
in
step
i.
If
it
does,
adjust
A4R1
ccwu...
between
peak
and
background.
Repeat
steps
11
and
12
until
no
further
beam
current
increase
is
attained
by
adjusting
A4S5.
When
final
adjustment,
tighten
the
locknut
while
adjusting
A4S5,
so
t
locknut
is
tight
(do
not
overtighten).
Loosen
attenuator
and
push
full
in
(maximum
attenuation).
Adjust
A4R1
full
ccw,
and
then
cw
to
the
first
peak
indication
on
Pull
A4
attenuator
out
until
de
voltmeter
peaks
then
decreases
slightly.
and
15
on
line
from
A12J1 1P1
)
and
A J1.
on
DC
ERROR
line
at
A8J6.
and
11
at
A8J1
TEST.
at
A J2
2N
HARMONIC
TEST.
at
A8J4
13
Hz.
on
line
between
S3
ON
and
A8J5.
location
number
for
waveforms
at
the
following
points:
at
A10J3.
at
A10J4
(DIV).
on
on
on
on
on
Delete
reference
to
“
Synthesizer
time
scale
0366.
“
under
waveform
number
5.
the
de
voltmeter.
about
1
minor
division
of
the
voltmeter
qhisTthe
’
’
opdmum
beam
current).
Carefully
lock
attenuator
set-screw.
CAUTION
In
Step
o,
the
beam
current
may
decrease
as
the
attenuator
is
pulled
out.
Should
this
occur,
lock
the
attenuator
all
the
way
in,
and
adjust
A4R1.
Turn
A4R1
maximum
ccw,
then
cw
until
the
de
voltmeter
indicates
a
peak
(see
figure
5-10a).
Continue
turning
A4R1
cw.
The
de
voltmeter
indication
will
remain
the
same,
or
decrease,
then
increase
again
to
the
peak
level
of
step
o.
This
double
peaking
indicates
saturation.
NOTE
If
the
"saturated
”
double
peak
is
not
evident
in
steps
p
and
q,
pull
A4
attenuator
out
slightly
and
repeat
steps
p
and
q
(see
Figure
5-10a).
If
saturation
cannot
be
attained
with
the
attenuator
pulled
out
all
the
way,
realign
A4
Harmonic
Generator
as
described
previously.
If
A4R1
is
turned
further
cw,
the
de
voltmeter
indication
will
decrease,
then
increase
amplitude
than
in
step
o.
Tkt
rnrrprt
neak
is
the
first
one
encountered
as
R1
is
turned
cwfrom
its
maximum
ccw
position.
Reset
A4R1
by
burning
R
full
ccw
and
then
cw
to
the
first
peak.
This
completes
Harmonic
Generator
A4
alignment.
Page
8-63,
Beam
l:Low,
Troubleshooting:
rhanpp
Stens
"35/45
”
to
read
as
follows:
"Remote
P
MP2
Check
voltage
at
A4P2;
should
be
>0.2V
rms.
Pa
®dd"test'
,8Ure
‘
'"waveforms
at
the
following
points:
1
2
3
4
5
6
7
MANUAL
CHANGES
MODEL
5061A
Page
8A
□
Change
component
locator
to
show
an
alternate
location
for
C16.
This
capacitor
appears
at
the
lower
end
of
IC
between
R59
and
CR32.
The
alternate
position
is
between
CR29
and
R36.
□
Page
8-15,
Figure
8-11,
A3
Component
Locator:
Add
R38
callout
for
resistor
located
between
C28
and
Q5.
Add
R39
callout
for
resistor
located
between
C42
and
L13.
Page
8-23,
Figure
8-15,
A5A2
Component
Locator:
Change
resistor
designated
R43
(midway
between
IC4
and
IC5)
to
R42.
Change
resistor
designated
R42
(adjacent
to
IC10)
to
R43.
□
Page
8-2 ,
Figure
8-1 ,
A6
Component
Locator:
Change
"C14
”
located
between
CR4
and
R16,
near
T2,
to
C13.
Change
"R4 "
located
between
C36
and
R39,
near
Q11,
to
R41.
□
Page
8-49,
Figure
8-2 ,
A14
Component
Locator:
Change
"R36"
located
between
CR6
and
R33,
near
Q10,
to
R38.
□
Page
8-51,
Figure
8-28,
A15
Schematic
Diagram:
ERRATA
(Cont
’
d)
Page
8-9,
Figure
8- ,
A1
Component
Locator:
Transpose
the
reference
designators
for
R59
and
R60.
R60
is
adjacent
to
C24
and
R59
is
adjacent
to
CR31.
Page
8-5 ,
Figure
8-31,
A15
and
A18
Circuit
Diagrams:
Change
A15Q15
to
1854-0062.
Change
A15R23
from
3300
to
33K
ohms.
Change
A18Q2
to
1854-0062.
Page
6-33,
Table
6-3,
Option
001
Replaceable
MISCELLANEOUS
Parts:
Change
05061-6034
to
05061-6100
in
"HP"
and
"Mfr
Part
Number"
columns.
Page
8-53,
Figure
8-29,
A16A1
Component
Locator:
Add
C5
over
unidentified
capacitor
between
upper
end
of
U1
and
C8.
Add
C6
over
unidentified
capacitor
between
lower
end
of
U1
and
C8.
□
Page
3-4,
Figure
3-3,
Rear-Panel
Controls:
Change
"SYNC"
in
item
"6."
to
SYNTH.
□
Page
5-10,
Paragraph
5- :
Add
attached
page
5-10a
Performance
Check
Test
Card.
□
Page
6-6,
Table
6-1,
A3A1
Replaceable
Parts:
Change
HP
Part
Number
for
A3A1C33
and
C36
to
0160-2225.
□
Page
8-4,
Figure
8-3,
Front-Panel
View:
Change
switch
marked
"S3"
in
front-panel
view
to
S5.
□
Page
8-13,
Figure
8-10,
A2
Component
Locator:
Change
R28
to
10K
and
R32
to
4 00
ohms.
□
Page
8-53,
Figure
8-29,
A16
Schematic
Diagram:
Add
"10"
by
U2
pin
labeled
"SHUT"
in
A16A1
diagram.
Add
a
connection
between
Q1
through
Q
emitters
in
U2
and
U2
pin
15
shown
in
A16A2
diagram.
MANUAL
CHANGES
MODEL
5061A
Page
9
CHANGE
1
(1816A)
Page
6-13,
Table
6-1,
A9
Replaceable
Parts:
Add
"(SERIES
1816)"
to
Description
of
Module
A9
and
circuit
board
assembly
A9A1.
NOTE:
The
Wiring
Diagram
(Page
8-5,
Figure
8-5),
A9
Schematic
Diagram
(Page
8-5,
Figure
8-20),
and
A1
Sche

matic
Diagram
(Page
8-55,
Figure
8-30)
apply
to
instruments
with
Serial
Prefix
Number
1816A
or
higher.
Page
6-24,
Table
6-1,
CHASSIS
&
MISCELLANEOUS
Replaceable
Parts:
Change
F1,
F2,
and
F3
fuseholders
(1400-0084)
to
the
following:
2110-0564;
FUSEHOLDER
BODY;
28480;
2110-0564.
2110-0565;
FUSEHOLDER
CAP;
28480;
2110-0565.
2110-0569;
FUSEHOLDER
MTG
NUT-PLASTIC,
HEX:
28480;
2110-0569.
CHANGE
2
(1840A)
(STANDARD
INSTRUMENT)
See
NOTE
at
end
of
CHANGE
10.
Page
6-23,
Table
6-1,
A19
Power
Supply:
Add
(SERIES
1840)
to
"Description
”
for
A19
(05060-6092).
Page
8-5 ,
Figure
8-31,
A19
(05060-6092)
Schematic
Diagram:
Change
series
number
at
top
of
A19
schematic
from
"1240A
”
to
1840.
Change
minimum
output
voltage
range
at
A19
pin
4
from
"-1800V"
to
"-1250V".
Instrument
serial
prefix
number
changes
from
1816A
to
1840A
with
this
change
for
A19.
CHANGES
(A5
SERIES
1840)
(OPTIONS
001
or
003)
NOTE:
The
following
change
for
A5
series
number
does
not
affect
the
serial
prefix
number
of
the
instrument
in
which
A5
is
installed.
Module
assembly
A5
is
added
for
Option
001
or
003.
Consequently,
the
A5
series
number
may
not
be
the
same
as
the
instrument
serial
prefix
number.
Page
6-33,
Table
6-3,
Option
001
Replaceable
Parts:
Add
"(SERIES
1840)"
to
Description
of
A5
(05061-6118)
Digital
Divider
Module.
Page
6-35,
Table
6-3,
Option
001
Replaceable
Parts:
Add
“
(SERIES
1840)"
to
Description
of
A5A2
(05061-6014)
circuit
board
assembly.
Change
A5A2C13
from
0140-0202
(15
PF)
to
0160-219 ;
C:
FXD
MICA
10
PF
5%
300VDCW;
28480;
0160-219 .
Page
8-21,
Figure
8-13,
A5
Block
Diagram:
Change
A5
series
number
to
SERIES
1840.
Page
8-21,
Figure
8-14,
Part
of
A5
Schematic
Diagram;
Page
8-23,
Figure
8-15,
Part
of
A5
Schematic
Diagram;
and
Page
8-25,
Figure
8-16,
Part
of
A5
Schematic
Diagram:
Change
A5
series
number
at
top
of
diagrams
to
SERIES
1840.
Page
8-23,
Figure
8-15,
A5A2
(05061-6014)
Schematic
Diagram:
Add
SERIES
1840
at
top
of
A5A2
schematic
diagram.
Change
value
of
A5A2C13
from
15
to
10
pF.
CHANGE
4
(A2
SERIES
1848)
(OPTIONS
002
or
003)
NOTE:
The
following
change
for
A2
series
number
does
not
affect
the
serial
prefix
number
of
the
instrument
in
which
A2
is
installed.
Circuit
board
assembly
A2
is
added
for
Option
002
or
003.
Series
1848
circuit
boards
for
A2
will
not
be
the
same
as
the
instrument
serial
prefix
number.
Page
6-30,
Table
6-2,
Option
002
Replaceable
Parts:
Change
A2
series
number
from
1 36
to
1848.
Change
A2C5
and
A2C
from
0180-2614
to
0180-0113
under
"HP
Part
Number
”
and
"Mfr
Part
Number
”
from
150D10 X903052
to
109D10 C2030T2.
Page
8-13,
Figure
8-10,
A2
(05061-6019)
Schematic
Diagram:
Change
A2
series
number
(top
of
diagram)
from
1 36
to
1848.
CHANGE
5
(1852A)
(STANDARD
INSTRUMENT)
See
NOTE
at
nd
of
CHANGE
10.
Page
6-5,
Table
6-1,
A3
Replaceable
Parts:
Add
"(SERIES
1852)
”
to
Description
of
A3
(05061-6108).
Add
"(SERIES
1852)
”
to
Description
of
A3A1
(05061-6106).
Change
A3A1C12
from
0160-093
(1000
pF)
to
0160-05 3;
C:
FXD
CER
4 00
pF
±
20%
100
VDCW;
28480;
0160-05 3.
Add
A3A1C54;
0160-2055;
C:
FXD
CER
0.01
pF
+80-20%
100VDCW;
28480;
0160-2055.
Add
A3A1R40;
0 5 -0924;
R:
FXD
ELM
IK
OHM
2%
0.125W
TC=
0±100;
24546;
C4-1/8-TO-911-G.
MANUAL
CHANGES
MODEL
5061A
Page
10
CHANCE
5
(1852A)
(STANDARD
INSTRUMENT)
(Continu d)
of
R20
and
the
junction
of
L2
and
C12.
Tabe
1.
A5A4
Part
No.
05061-6152
Repaceabe
Parts
DESCRIPTION
HP
PART
NUMBER
05061-6152
0140-0196
1820-1437
1854-0005
0757-0280
0757-0283
0757-0442
2100-0896
ASSY:
SWITCH
CIRCUIT
BOARD
(SERIES
1904)
C:
FXD
MICA
150
pF
5%
300VDCW
IC:
TTL
DUAL
MONOSTABLE
MVB/SCHMITT-TRIGR
TSTR:
NPN
SI
2N 08
R:
FXD
FLM
1K
OHM
1%
1/8W
R:
FXD
FLM
2K
OHM
1%
1/8W
R:
FXD
FLM
10K
OHM
1%
1/8W
R:
VAR
WW
15K
OHM
1-TURN
TOP-ADj
REFERENCE
DESIGNATION
A5A4
A5A4C1*
A5A4IC1
A5A4Q1
A5A4R1
A5A4R2
A5A4R3
A5A4R4
Page
8-19,
Figure
8-13,
A5
Schematic
Diagram:
Change
A5
from
SERIES
1840
to
SERIES
1904.
Replace
A5A4
schematic
diagram
with
diagram
in
attached
Figure
3
for
A5A4
Part
No.
05061-6152
(SERIES
1904
circuit
board
assembly.
Replace
A5A4
component
locator
illustration
with
new
illustration
in
attached
Figure
4.
Page
8-21,
Figure
8-14,
Part
of
A5
Schematic
Diagram:
Page
8-23,
Figure
8-15,
Part
of
A5
Schematic
Diagram;
and
Page
8-25,
Figure
8-16,
Part
of
A5
Schematic
Diagram:
Change
A5
series
number
at
top
of
diagrams
from
SERIES
1840
to
1904.
NOTE
The
new
A5A4
circuit
board
assembly
uses
a
potentiometer
for
adjustment
in
place
of
a
variable
capacitor.
The
adjustment
procedure
given
in
the
Operating
and
Service
Manual
for
A5A4
is
the
same
for
either
assembly.
Page
8-15,
Figure
8-11,
A3
Schematic
Diagram:
Change
"(SERIES
1640A)"
at
top
of
A3
and
A3A1
schematics
to
(SERIES
1852).
Add
0.01
pf
capacitor
(C54)
in
parallel
with
electrolytic
capacitor
C10.
Add
1000
ohm
resistor
(R40)
in
series
between
the
arm
Change
the
value
of
C12
from
1000
pF
to
0.004
/xF.
CHANGE
6
(1904A)
(STANDARD
INSTRUMENT)
See
NOTE
at
nd
of
CHANGE
10.
Page
6-12,
Table
6-1,
A8
Replaceable
Parts:
Add
"(SERIES
1904)"
to
A8
(05061-6095)
Description.
Add
"(SERIES
1904)
”
to
A8A1
(05061-6096)
Description.
Change
"HP
Part
Number"
for
A8A1C9,
C10,
and
C22
from
0180-0113
to
0180-2614.
Change
"Mfr
Part
Number
”
for
A8A1C9,
CIO,
and
C22
from
109D10 C2030T2
to
150D10 X903052.
Page
8-33,
Figure
8-19,
A8
Schematic
Diagram:
Change
"SERIES
1244A"
at
top
of
A8
schematic
to
"SERIES
1904".
Add
SERIES
1904
at
top
of
A8A1
schematic.
Page
6-24,
Table
6-1,
Replaceable
Chassis
Parts:
Change
C5
from
0180-0090
(1000
/xF)
to
0180-28 ;
C:
FXD
ELEC
2400
/xF
+ 5-10%
50VDCW;
28480;
0180-28 .
Page
8-51,
Figure
8-23,
Schematic
Diagram:
Change
C5
from
1000
to
2400
/xF.
CHANGE
7
(A5
SERIES
1904)
(OPTIONS
001
or
003)
NOTE:
The
following
change
for
A5
series
number
does
not
affect
the
serial
prefix
number
of
the
instrument
with
A5
added
for
Option
001
or
003.
The
series
number
on
the
A5
module
assembly
may
not
be
the
same
as
the
instrument
serial
prefix
number.
Page
6-33,
Table
6-3,
Option
001
(A5)
Replaceable
Parts:
Change
A5
(05061-6118)
series
number
from
1840
to
1904.
Page
6-3 ,
Table
6-3,
Option
001
(A5A4)
Replaceable
Parts:
Change
A5A4
(05061-6033)
and
all
components
for
this
assembly
with
A5A4
Part
No.
05061-6152
and
com

ponents
in
attached
Table
1.