BRUEL & KJAER 1024 Operating instructions

BROEL & KJ.ER
NC2rum -Denmark Service Instructions
Sine - Random Generator
Consisting of:
tv'.eter Circuit
Output Amplifier
Oscillator
Compressor
Position of Components
Parts
Li st
Circuit Diagram
Removal of the !Vetal Case
1024.1
1024.2
1024.3
1024.4
1024.5
1024.6
1024.7
1024
After removing the four threaded re tainers at the back of the instrument, it is possible to slide the chassis and the front ponel out
of the case.
Troub le Shooting
If the reason for a fault is not an obvious one such as a de ad tv be, broken down resistor, blown or disconnected fuse etc., then
first test the voltages of all the tubes and compare them with the voltages shown in the circuit diagram in order to localize the
defect. Should this method of finding the fault prove unsuccessful, then check the instrument by adopting the method described in
the adjustment procedure. When the trouble has be en found and remedied, the vo ltages and adjustments which ar e i nfluenced by
the remedy must be
rechecked.
The tolerances stated in the instructions can anly be used as a guide for adjustment and control, but any deviations must not be
corrected without being sure that the tolerances of the instruments used for making the ad justme nt are so small as to have no i n-
fluence on the mea$urements .
The instructions in this tv\anual
are given purely as a guide to the service of equipment with minor faults . Some faults, as f.inst.
small deviations in tolerances require for their correctio n special control equipment and extensive experience, and in these cases
it is necessary to ~nd the instrument to the factory .
~
Please state type and serial numb er of apparatus when spare parts are ordered.
Instruments necessary for
service and repair
Multimeter (SO ~)
Frequency Analyzer Type 2107
(Frequency counter or a frequency standard and a service oscilloscope)
(Vacuum Tube Voltmeter Type 2409)
(Frequency and Distortion .v.easuring Br Jdge Type 1607)
1024-16 5

BROH & KJ.ER
NCllrum - Denmark
1. 1. h\echanical Zero-pojnt
1
.2. tv\eter Circuit Balance
MATCHING IMP.: "600"
COMPRESSOR SPEED: "OIP'
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "S ine"
METER SWITCH: "0.3 sec . Output Vo l t."
FREQUENCY SCALE: "1000 Hz"
1 .3 . Sensitivity
MATCHING IMP.: "600"
COMPRESSOR SPEED: "OIP'
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "Sine"
METER SWITC H: "0 .3 sec . Output Volt. "
FREQUENCY SCALE: "1000 Hz"
1.4 . Meter Time Const.
MATCHING IMP . : "600"
COMPRESSOR SPEED: "Off"
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "Sine"
METER SWITCH: "0 .3 s ec . Output Vo lt ."
FREQUENCY SCALE: "1000 Hz"
1.5. Voltage Divider
MATCHING IMP.: "600"
COMPRESSOR SPEED: "Off"
SWITCH 07: "Scanning Off"
BAND WI DTH SELECTOR: "Sine"
METER SWITCH: "0 .3 sec. Output Volt ."
FREQUENCY SCALE: "1000 Hz "
1024.1 - 1.65
Meter Circuit
1024.1
vol id from seriol no. 13h$.81
Adju st for 0 with no power on.
Adjust the OUTPUT LE VEL lor a 10 Vdellection on type 1024. Check that
the voltages across R 84 and R 85 are equal (appro x. 7 V).
By unbalance: N\easure the voltage across R 85 and adjust P5 for the same
voltage across R 84.
Adjust the OUTPUT LEVEL to exactly 10 V on type 2107.
Deflection
on type 1024: 10 V.
If necessary adjust P 4.
Adjust th e OUTPUT LE V EL for 0 10 V deflection on type 1024 and check the
time constant lor all
OUTPUT V OLTAGE pasition 01 METER SWITCH .
Tolerance: t 20 %.
By the meter time constant is meant the ti me it tokes for the meter pointer to
fall from 10 V to 3.4 V deflection when the input signal is disconnected
(GENERATOR STOP pushed-in).
Adjust the
OUTPUT LEVEL lar a 10 V deflection an type 1024.
Check the deflection
on type 1024 in all positions 01 MATCHING IMP. by
comparison to type 2107.
Tolerance: ±
2% (+ tolerance 01 2107: 2%).

BROEl & KJ.ER
NCBrum - Denmark
2.1. Frequency Response
a. ATIENUATOR: "12000 mY"
MATCHING IMP. :"AII"
COMPRESSOR SPEED: "Camp. Ofr '
SWITCH 07 : I' Scanning Off"
BANDWIDTH SELECTOR: "Sine"
METER SWITCH: "0.3 sec. Output Volt."
FREQUENCY SCALE: "1000 Hz"
b. Check all positions of
MATCHING IMP. except IIAtt."
2.2. Power Output
MATCHING IMP .: "6Q"
COMPRESSOR SPEED: "Camp. Ofr'
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "Sine"
METER SWITCH: "0.3 sec. Output Volt ."
FREQUENCY SCALE: "1000 Hz"
b. Check MATCHING IMP . in position
60 -600 -6000 Q
2.3. Instability
OUTPUT LEVEL: "0"
SWITCH 07: "Stand by"
2.4. Attenuator
a. ATIENUATOR: "12000 mY"
MATCHING IMP . : "All."
COMPRESSOR SPEED: "Camp. Ofr'
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "Sine"
METER SWITCH: "0.3 sec. Output Volt."
FREQUENCY SCALE: "200 Hz"
b. FREQUENCY SCALE to "20000 Hz"
1024.2 - 1. 65
Output Amplifier
1024.2
val id from serial no. 131481
Adjust the OUTPUT LEVEL for a 20 dB deflection on type 1024.
Vary the frequency from 20 -20000 Hz.
Deflection on type 1024: 19.5 -20.5 dB
If necessary adjust C 103 .
As under item a, but deflection on type 1024: 19. 3-20 .7 dB.
Check that apprax. 3 Watts can be obtained . Deflection above 21 dB on type
1024 in the entire frequency range 20-20000 Hz with a load of 6 Q connec-
ted to LOAD terminals.
Possible reason for fault: too low LF signal on OUTPUT LEVEL potentiometer
The voltage shou ld be approx. 280 mY . If not check item 3.4, 3.5 and 3.7.
As under item a, but with a load of 60-600-60000 Q connected to LOAD ter-
minals .
Check that the amplifier does not stort oscillating when a 2 nF condenser is
applied to the
LOAD terminals.
If necessary opply a condenser 0-500 pF between 600 and 6000 Q terminals of
T 2 and check frequency response again item 2 .1.
Adjust the OUTPUT LEVEL for 010 Vdeflection on type 1024.
Check all positions of ATTENUATOR by camporison to type 2107.
Toleronce::!: 2% (+ tolerance of type 2107: 2%).
Check and tolerances as under item a.

2.5 . Distortion
- a. ATTENUATOR: "12000 mV"
MATCHING IMP .: "Alt ."
COMPRESSOR S PEED: " Comp . Ofr'
SWITCH 07: "Scanning Ofr'
BANDWIDTH SE LECTOR : "Sine"
METER SWITC H: "0.3 sec. Output Volt. II
b. MATCHING IMP. to "60"
2.6 . Noise - Hum
MATCHING IMP .: "600"
COMPRESSOR SPE ED: "Comp. OFr'
SWITCH 07 : "Scanning Off"
BANDWIDTH SELEC T OR: "Sine"
METER SWITCH: "0.3 sec. Output Vo lt."
FREQUENCY SCA LE: "1000 Hz"
b. MATCHING IMP. to " 6000"
BANDWIDTH SEL ECTO Rto "10 Hz"
2.7. Output Transformer
MATCHING IMP .: "600"
COMPRESSOR SPEED: "Comp. Ofr '
SWITCH 07: "Scanning Off"
BANDWIDTH SELE CTO R: "Sine"
METER SWITCH: "0.3 sec. Output Volt."
FREQUENCY SCALE: "1000 Hz"
1024 .2 - 1 _6 5
Adjust the OUTPUT LEVEL f", a 10 V deflection on type 2107 (10 V range)
and check the distortion of frequencies from 20 -20000 Hz.
Distortion down to 0.5% can be measured with type 2107 . lower distortion
requires use
of 1607 filter for rejection of fundamental frequency.
If 16lJ7 is available, check limits.
FREQUENCY SCALE:
max. distortion: 20 0.7
200
0.25
2000
0.25
20000 Hz
0.7 %
Connect a resistor of 6 Q to LOAD terminals and adjust OUTPUT LE VEl for 0
2 .5 V defle ction on type 1024.
FREQUENCY SCA LE :
ma x. distortion: 20 1.2
200
0.5
2000
0.5
20000 Hz
1.2 %
The i nstru ment must be placed in its case or in other way effectively screened .
Adju st the O UTPUT LE V EL f", 0 10 V deflection on type 2107 (10 V range).
Depress GENERATOR S TOP and measure the noise and hum at line frequency
and
2n d and Jr d harmonic.
Nois
e:
Hum : min.
65 dB below 1 0V
min. 70 dB below 10 V
Ch eck and tolerances as under item a.
Adju st the OUTPUT LEVEL for a 10 V deflection on type 1024.
Check all · other positio ns of MATCHING IMP . Deflection on type 1024
9.8 - 10 .2 V.

BROEL & KJ.ER
NCllrum -Denmark
Oscillator
1024.3
valid from serial no. 131481 sheet 1
100-120kH,V
~12JkH'
-
~
08
0
~
~
OE Or
~
~
OA
00
~
0
V1
Flg.1 Oscillator cOIL Assembly ZS 0113
Attention: Item 3.1 - 3.2 - 3.3 - 3.4 - 3.6 and 3.9can only be checked and adjusted by means of a frequency counter e<
on oscilloscope and a frequency standard . (The voltages should be measured by means of a high impedance (low
capacity) tube voltmeter.
3.1. Fixed Oscillate<
FREQ. INCREMENT: "0"
3.2. Variable Oscillator
MATCHING IMP , : "60"
COMPRESSOR SPEED: "Compo Off"
SWITCH 07: 'Sc anning Off"
BANDWIDTH SELECTOR: 'Sine"
METER SWITCH: '0.3 ,ec. Output Volt."
FREQ.SCALEALIGN,FINE: "Center PO$iiion"
FREQ, SCALE ALIGN. COARSE:
"Center P05Jtion"
FREQUENCY
SCALE: "20 Hz"
b. FREQUENCY SCALE tQ "20000 Hz"
1024.3 - 1.65
Adjust the oir trimmer ,"0
W
Fig . 1) for 123 kHz t 10 Hz. on the socket ·123
kHz".
Adjust only the iron core ("C" Fig. 1) if the regul ation range of the oir trim-
mer
is too narrow.
Adjust the iron
core of Z 10 to min. voltage on the "123 kHz" socket.
The voltage should be 170 -240 mV .
Adjust the air trimmer (liB Fig . 1) for 20 Hz at the LOAD terminals.
Voltage on the "100-120 kHz socket shou ld be 160-250 mV.
Adiust the iron core (lie" Fig. I) for 20000 Hz at the LOAD terminals.
Check a - b again and readjust
if necessary .
If the pointer has been removed ., set the condenser to fully "turned in
ll
p::tsi-
tion. The position of the condenser is checked with a plate of insulating ma-
terial which strokes over the stator plates so that none of the rota- plates is
above the stator plates. Make a degree scale with 1020 at 20 Hz and 3180 at
20000 Hz and fix the poi nter at 3200.

3.3 . 3 k Hz Filt ",
o. MATCHING IMP .: "600"
COMPRESSOR SP EED: "Comp. Ofr'
SW ITCH 07: "Scanning Off"
BANDWID TH SELECTOR: "10Hz"
METER SWITCH: 110.3 sec . Output Vo lt ,"
b. Check BANDWIDTH SE LECT OR
in all positions
BANDWIDTH SELECTOR:
Before adjustment of the coils toke the instrument out of its case and leave it
switched on for 2 hours min . This ensures that condensers and coils hove the
same temperature.
Remove tube V 13 and connect ty~ 1022 to filt ~ r input (R 115).
Input signal: 2 mV 3000 Hz t 0.3 Hz .
Adiust Z 3 and Z 4 for max . defleclion on type l024.
Change the frequency appro x. + and -100 Hz and check the top of the filter
curve. Jt should be flat wit hin 2 dB and the height of the three tops should be
within - 0.5 dB .
10 Hz 30 Hz 1 00 Hz 300 Hz
Frequency Damping Frequency
Hz dB Hz
3ooo!
0 0
3000::
5 3
10
min. 10
20 20
30
30
3.4. 3 kH z Oscillator
BANDW IDTH SELECTOR: "Sine"
3.5. Noise Generator
MATCHING IMP .: "600 0"
COMPRESSOR SPEED: "Comp. Off"
SWIT CH 07: "Sc:onning OWl
BAND WI DTH S ELECT OR: "Sine"
METER SWIT CH : " 10 sec. Output Volt. "
FREQUENCY SCALE:
"1000 Hz"
b. BANDWIDTH SELECTOR to 20-20000 Hz
c. B AN D WIDT H SE LECTO R in pos it ions
10 - 30-100-300Hz
d. BA NDWIDTH SE LECT OR to 20-20000 Hz
1024.3 - 2.68
0
15
30
60
90
Damping Frequency Damping Frequency Damping
dB Hz dB Hz dB
3000 ± 0
3000+ 0 0
50
-150 3
min . 20 1
00 min . 20
300
min. 20
40 200
40 600
50
50 300 50
Short-circuit 91 on V 1 (pin 2) to ground and connec t a frequency counter an
the sec9f\dary
af Z 4.
The frequency should be: 3000 H z.
Tolerance:: 1 Hz.
Ad j ust P 8 to 200 mV measured an the secondary of Z 4.
Connect an oscilloscope to LOAD terminals and adjust the OUTPUT LE V EL
for a 20 dB deflection on type 1024.
Check that th e amplitude distribution of the noise is symmetrical .
If necessary adjust P 2.
Check the defl ect ion on type 1024: 19 - 21 dB .
If necessary adjust P 7 .
Check the deflection on type 1024 : 19 - 21 dB.
If necessary adjust P 3.

BROEL & KJJER
Ncsrum -Denmark
3.6. 1000 Hz Reference
ATTENUATOR: "12000 m V"
MAT ::: HING IMP . : "Att "
CO, 'PRE S SOR SPEED: "Comp. Off"
SWITCH 07: "Scann;ng Off"
BANDWIDTH SE LECT OR ;"S;ne"
METER SWITCH: "0 .3 sec. Output Volt."
3 ,7 . p ~' kHz Selective Amplifier
A: TENU ATOR: "12000 mV"
MA TCHING IMP. ~ "Att."
C OMPR ESSOR SPEED: "Camp. Off"
SWI T CH 07 : "Scanning OW'
BA ND W IDTH S ELEC TOR: "S;ne"
M ETE R SW ITCH : no .3 sec. Output Vo lt ."
FREQUENCY SCALE: "1000 Hz"
•
~
•
.-
~
•
•
.. ~
.
•
.
3 . 8. Balanced Modulator
MATCHING IMP.: "600"
COMPRESSOR SPEED: "Comp. Off"
SW ITCH 07: "Scanning orr'
BANDWIDT H SE LE CTOR: "S;ne"
•
@o
.:
..
•
i-
•
METER SWITCH: 110 .3 sec . Output Vo lt . II
FREQUENCY SCA L E: "500 Hz"
3 . 9. Frequency Drift
COMPRESSOR SPEED: "Comp. Off"
5WITCH 07: "Sconn;n9 Off"
B ANDWIDTH SELECTOR: "S;ne"
METER SWITCH: "Power Freq. Beat"
FREQUENCY I NCR . : "0"
3.10. Mognet Clutch
Oscillator
1024.3
valid from seriol no. 131481
sheet 2
J\djust the oscillator at line frequency and set the FREQUENCY SCALE to
"1000 Hz Ref."
Press the
"1000 Hz REF. SI GNAL" button and adjust C 102 for 1000 Hz.
Ad j ust OUTPUT LE V EL for a 20 dBdeAecHon on type 1024,
Adjust the iron core in filters Z 5-6-7-8 -9 to max. deflect ion on type 1024.
Adjust potentiometer P 9 for 285 mV on OU T PUT LE V EL potentiometer.
()
~
•
...
:ec
®
• i·
'."."...
;'0';
e' . ~ , ..
e' .. .. -' e-
Adjust the OUTPUT LEVEL f", 0 10 VdeAect;on on type 2107.
Short- circuit gl on V 12 (C 91, C 92, R 144) to ground.
t\A.eosure the 3.5 kHz signal on L OAD. It should be at least SOdB below 10 V.
If necessary adjust Pl.
Adjust the ascillator at line frequency after a warm up time of 5 min.
Adjust the osc illator at line frequency by means of FREQUENCY INCR. after
20 min. and 15 hours dnft.
Frequency drift: max. ~ 7 Hz for each period.
If necessary adjust trimmer ("AII Fig . 1) and check that t. immer "B" is in a
position
that it is poss:ble to zero adjust the osci lla tor.
Should the equipment be used frequently in conjunction with the level recorder, or other instruments whose motors are used
to drive th o:: c apacitor spindle, then occasional lubrication of the mognet slip ..... ing and capacitor - sl ip per is necessary. Pe-
troleum jell y should be used to lubricate these parts.
Note: 00 not lubricate t he ball bearing of the tuning capacitor spindle and the magnet clutch .
1024.3 - 1.65

BROEl & KJA:R
NC2rum - Denmark
4.1. Compre ssor Balance
ATTENUATOR: "1200 mV"
MATCHING IMP .: "Alt."
COMPRESSOR SPEED: "1000 dB / sec."
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "S;ne"
METER SW1TCH: "0.3 sec. Output Vo lt."
fREQUENCY SCALE: "1000 Hz"
COMPRESSOR VO LT. , "10"
4.2 . Frequency Response
ATTENUATOR: "12000 mV"
MATCHING IMP.: "Alt. "
COMPRESSOR SPEED : "100 dB /s ec."
SW ITCH 07: "Scan ning Off"
BANDWIDTH SELEC T OR: "S;ne"
METER SWITC H: "0.3 see. Output Volt."
FREQUENCY SCALE: "1000 Hz"
OUTPUT LE V EL: "10"
4.3 . Go:" Reserve
COMPRESSOR SPEED: "3 dB / sec."
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "S;ne"
METER SW ITCH : "0 .3 sec. Output Volt."
FREQUENCY SCALE: "1000 Hz"
b. COMPRESSOR SPEED to "Comp. OfP'
4.4. Compression
MATCHING IMP .: "6000 n"
COMPRESSOR SPEED: "100 dB /sec."
SWITCH 07: "Scanning Off"
BANDWIDTH SELECTOR: "S;ne"
METER SW1TCH: "0.3 sec. Output Volt."
FREQUENCY SCALE: "1000 Hz"
OUTPUT LEVEL: "10"
1024
.4 - 1.65
Compre~sor
1024.4
valid f rom seriol no. 131481
Adjust the OUTPUT LE VE L for a 0 .5 V dellecHon on type 1024.
Check that the signa l of the anodes of V 14 are equo t•
If necessary adjust P 6.
Adjust COMPRESSOR VO LTA GE for 0 20 dB deflecHon on type 1024.
V ar y the frequenc y from 20 -20000 Hz.
Defl ect ;on on type 1024: 19 .5 - 20.5 dB
Adjust the OUTPUT LE V EL for a 20 dB dellecl;on on type 1024.
COMPRESSOR INPUT d;sconnected.
DelleeHon on type 1024: 10 -12 dB.
Adjust COMPRESSOR VOLTAGE for on 18 dB dellecHon on type 2107
(100 V ronge)
Increa se the go;n of type 2107 by 40 dB, (1 V range).
Ntax. change of deflection on type 2107: 1.5 dB .

".,
•
BROEL & KJA.:R
Ncerum -Denmark
I
I
I
I
1
1
I
I
I
I
Ie
I
I
I
I
I
I
I
I
I
I
Ie
I
I
I
I
I
I
I
I
I
I
I
Position of Components
val id from serial no. 197678
@ @
- co
~
0
0
U
~
1024.5
sheet 1
@ eI
I
® .
®I
I
®
~
I
I
I
I
I
I
I
I
Ie . ~~~~~~
! l! ~~~~~~ ~~ ~
1 _______ _
1024.; - 1 67

r---;---------..,
I
: ~~~W! ~
I
I
I
I
I
I
I
I
I
I 0 0
L __________ -1
o 0 0 0L ________________ _
1m .5 -1.67
r --- ----,
I . I
I

BROEL lit KJ..ER
Ncerum -Denmark
Attenuator
Position of Components
volid from seriol no. 131481
Bandwidth selector
1024 .5 - 1.65
1024.5
sheet 2
Meter Swit ch

BROEL & KJA:R
1024.6
Ncerum -Denmark
Parts-List
va lid from se rial no. 232248
COMPONENT TYPE
ST OCK
CI RCU IT
COM P ONENT TYPE
ST OCK CIRCUIT
REFERENCE
DIAGRAM
REFERENC E DIAGRAM
R EF .
REF .
CO N DENSERS,
RECTIFIERS,
Electr~,l ytic
50 ~F / 450 V CE 0907 C
14-16
Si lic on diode 200 V/o.6A
QV 0502 Q 1
9,20
1 ~F / 320 V CE 0512 C 1 Zener diode 13 V
QV 1117 Q2 1
8 ~F /350 V CE 0802 C 10-13 Noise diode QV 0093 Q 18
4 ~ F/250 V
CE 2034 C 1
7, 18
2 x 50 ~F /250 V CE 0706 C 4-9 RES I STORS,
2 x 100 ~ F / 250 V CE
0707 C 2,3
1 W! J( l"k
320 ~F / 64 V CE 0511 C 19
Carbon film RK 63 kQ R2
50 ~F / 25 V CE 8965 'C 22
1/2W RK
10 Q
R9
100 ~ F / 12 V CE
0415 C 21
RK 2 kQ R 12-1 5
100 ~F / 3 V CE
0310 C 20
RK
IOkQ
R 1, 16
Ceramic 2
.2 pF /4DO V CK 0220 C
31
RK
20 kQ R17
1 .8 pF /4DO V CK 0180 C
32
RK 25kQ R20
3.3 pF /4DO V CK 0330 C 33
RK
31.5 kQ R22-24
Pol yes ter
47 nF /400 V CS 0109 C66
RK 50 kQ R25, 26,39
0.22 ~ F /40 0 V CS
011 7 C
67,68
RK
63 kQ
R 27,28
10 nF /250 V
CS 0001 C 41 - 45,69
RK
lOOkQ R29-
31
68 nF/250 V CS
0011
C 46-48
RK
200 kQ R
32,33
0. 1 ~F / 250 V , CS 0013 C
49 -52
RK 315 kQ R34
0.22 ~F /250 V CS 0017 C 53
RK 400 kQ R35
0.33 ~F / 2 50 V CS
0019
C54
RK 500 kQ R36
0.68 ~F / 250 V CS 0023 C 55-57
RK 10Ml R37,38
1 ~F / 250 V CS 0025 C 59- 61 5%
RK
160 Q RI O
2 ~F / 250 V CS
0028 C 63-65
RK 3 1. 5 kQ R21
Polycarbonat
4,7 ~F / l oo V CS 0333 C
58
3%
RK 200 Q R ll
Polyst yrene
125 pF /5oo V
CT 0104 C 71
1/3 W! 10% ,
RK
25 kQ R18,1 9
12 5 pF/ 5oo V CT
0104
C72
RK
100 Q R5 1- 53
200 pF/5oo V
CT 0107 C 73
RK 500 Q R 54-56
250.pF /5oo V
CT 0108 C 74-76
RK
1 kQ R
57,74
300 pF/.500 V CT 0109 Cll
RK
1 .25 ·kQ R58
400 pF /5oo V
CT 0111
C 78 -82
RK
1 .6 kQ R59- 61
500 pF /5oo V CT 01 13 C
85,86
RK
2kQ
R62,64
600 pF /5 oo V CT Oi14 C 87
RK
3.15 kQ
R65
800 pF /5oo V CT 0
11 6 C 88
RK
4 kQ R66
5 nF /400 V CT 1202 C 91 ,92
RK 6.3 kQ R68-72
1 3.5 nF/2oo V
CT 1205 C 93-95
RK 10 kQ R75
400 pF/ 125 V CT
1011 C 83,84
RK 20 kQ R81
Va,;able( 20-20aa0 H z) CV 0010 C 1
01
RK
31 .5 kQ R87-90
" (-50
+5 0 Hz}60 pF
CV 3 01 8 C 106
RK
40 kQ
R92
Tri mme rI ceramic 3 .5 pF CV 0021 C 103
RK 63kQ R97,98
40 pF cv 0019 C 102
RK
100 kQ R 102-106
air 15 pF
CV 3021 C 105
RK
1 60kQ
R1 D9
60 pF
CV 3019 C 104
RK
200 kQ
R 11 3
RK 315 kQ R117
SW IT CHES,
RK 350 kQ R 11 9, 120
RK
500 kQ' R 121, 1
22
Power On- off
1~ Hz Ref.
NN 0563 Nl
R~ . 630 kQ R1 24
NT 0014 N2
RK l Ml
RI 27-131, 1'
Generat or sto p NT 0023
N3
RK 2Ml R1 35 -138
R» , la y
OC 0016 0 1- 3
RK IOMl R144, 14 5
Attenuotor
OR r024 04
5%
RK
180 kQ R
11 2
.v.atching Imp. OS 1024
05
RK
520 \<!l R1 23
Compressor
OT 1024
06
RK
1 .8 ' Ml
R133
St ~ and by OU 1024
07
RK 5.2Ml
R 141
Bandwidth
OV 1024
08
RK 6.3Ml R142, 1 43
Meter
OW 10 24 ' 09
3% RK
5kQ
R67
P ~ er volt age sel ec tor JS 0005 0
11
RK
7 kQ R73
RK
15 kQ
R 76
POT ENTiOMETERS,
RK 16l<Q R·
ll
CQffipressor input
25 kQ· l ag.
PP
3253 P 10
RK
20 kQ R78 ,7 9,80
Output l evel
30 len "; ,; ir e PR 3301 Pll
RK 25 kQ R82
RK 30 kQ R83
Trimmer p at. m.carbon 200 0: lin.
PG 1201 PI
RK 31 .5 kQ R 84-86
2knHn.
PG 2200 P 2
RK
40 kQ
R91
5 leO lin .
PG 2502 P
3,9
RK
50 kQ
R93
10 kQ 1;n . PG 3102 P
4,5
RK 63 kQ R 95,96
20 kQ lin .
PC; 3201 P6
RK
70 kQ R99
200 kn l in .
PG 4201
P7
RK l OOkQ Rl oo ,I 01
500 kn lin .
PG 4501 P8
RK
. 120 kQ R
ill
RK 160 kQ R 107,108
RECTIFIE RS,
RK 165 kQ R 110
Ge rmanium diode OA85 QV 0085 Q 1
-4
RK 250 kQ R 114
Silic :OO diode 200 V/o.04 A QV 0022 Q
5- 10
RK 315 kQ R
11 5, 11 6
1000 V/ o. 15 A
QV 0023 Q 11-13 ,2 2,2 3
1200 V/o. 15 A
QV 0025 Q 14-17
contin ve'd
10 24.6 -6.
68

COMPONENT TYPE
Carbon fa m 1/3 W ! 3%
Wire-wound
8W390 Q
6.8 kQ
5W 6.2 kQ
PRECISION RE SISTORS:
Carbon film 1/2 W! 0.5%
STOCK
REFERENCE
RK 335 kQ
RK
700kQ
RK
lMQ
RK
1.2MQ
RK
2MQ
RK 2.5MQ
RK 3.15MQ
RX 0406
RX 0401
RX 0303
RK 4.62kQ
RK 10 kQ
RK 11.1 kQ
RK 31.5kQ
RK 67.6kQ
RK 100 kQ
Wire-wOund
.., '
lW-o .5% 68 . 3Q RO 0001
l00QROOOO 2
147 .8QROOOO3
TUBES etc.:
Twin t;iode ECC81;12AT7
ECC82;12AU7
ECC83;12~7
P en tode E F94 /6A1,J6
II low.micr . EF94 !6AU6
E1.84 fo B05
ELB . 6/6CW5
'Sta bilizer OA2
Fuse 1 .6 Amp.
Met.r Lamp 6.3V /o.5A
Dial lamp 6.3V/o.5A
PR IN TED CIRCUIT:
Output ampl ifier
M.eter swit ch
Bandwidth se lector
Attenuator
Fixed oscillator
Variable ..,. .ampl .
Variable oscillat or
XC 0248
with ~Iomponents
XC 0186
XC 0187
XC 0188
XC 0189
XC 0249
XC019 1
MISCELLANEOUS:
Power cord lEur .
Power cord, USA
Rubber foot
Clutch
plate with worm whee l
Hondle f.metal
cob.
Handle f.wooden ·cab .
Front plate , painted & printed
BOck plate
Meter
Coaxial jack
6-pip jack
Binding ' post
Coaxi al plug
6-pin plug
Jack for grounding
Case,wood
Pla stic cover
Frame for 19" rack
Case, metal
Transformer
1024.6 - 6.68
VA 0009
VA 0011
VA 0012
VA 0021
VA 0070
VA 0023
VA 0024
VA 0037
VF 0007
VS 1271
VS 8024
XC 0248
XC 0186
XC 0187
XC 0188
XC 0189
XC 0249
XC
0191
XC 0248 bl .800
XC 0186 bl.801
XC 0187 bl.802
XC 0188 bl .803
XC 0189 bl.804
XC 0249 bl .805
XC 01 91 bl .806
AN 0005
AN 0006
DF 70 ): 0
DG 0163
DH !0052
DH 0054
FA
10 24
F8
0162
1M
0006
JJ 0115
JJ 4704
JK
6270
JP
0018
JP 4705
JT
6204
KA 0010
KF
0028
KS
0001
KO 0017
LB
0401
CIRCUIT
DIAGRAM
REF;
R 11 8
R 125
R 126
R 132
R 134
R 139
R 140
R 253
R 252
R
251
R 201
R202
R 207
R203
R204
R 205,206,208
R209
R210-218
R219-228
V I ,4 ,5 , 8, 11, 14
V9,10
V 13
V 2,3 ,6 ,12,16
V6
V7
V 15
V 17
V 18
V19
V20
Z4
COMPONENT TYPE
MISCELLANEOUS:
Vcr'll ampl .coi I assembly
" II
Coil for H .F. filter
Choke
Com di sc for dead zone switch
Bake li te knob 25 mm
30 mm flat
30 mm
30 mm twin ma rk
40 mm
53 mm
Frequency dial housing
Frequency d1al pointer
Power transformer
Output transformer
Fl exible shaft
Clutch magnet
Chain drive adapt
or
H. F. fiiter
Var . .... ampl.coil assembly
12 3 kHz transformer
3 kHz filter
Oscillator coil assembly
STOCK
REFERENCE
LB 0402
LB 0403
LB 0404
LB 0552
LJ 0004
OD 0133
CIRCUIT
DIAGRAM
REF.
Z 6,7
Z5
Z8
L 1 ,2
L3
SN 2522 + DB 0674 + YO 2083
SN 3207 + DB 0850 + YO 2083
SN 3222 + DB 0674 + YO 2083
SN 3227 +
DB 0674 + YO 2083
SN 4027 +· DB 0674 + YQ 2083
SN 6319 + DB 0675 + YO 2087
SO. 0188 -
SV 0001
TN 0004
TU 0006
UB 0041
UM 1011
UT 0014
T 1
T2
ZS 0057 Z 2
ZS 0058 Z 9
ZS 0059 Z 10
ZS 0111 Z 3
ZS0113 ZI