BRUEL & KJAER 1019 Operating instructions

BROEL & KJ.ER
Ncarum -Denmark Service Instructions ·
Consisting of:
Removal of the Case .
Automatic VIbration Exciter Control
Output Amplifier
Oscillator
Pick-up Amplifier
Compressor
Motor Drive Circuits
Position of Components
Parts
list
Circuit Diagram
1019.1
1019.2
1019.3
1019.4
1019.5
1019.6
1019.7
1019.8
1019
After removing the eight HEX/HD screws on the front panel and the two screws in the bottom, it is possible to slide the chassis ond
the front panel out of the wooden case.
For rack mounting the metal case can be pulled out after the six HEX/HD screws on the side of the instrument are removed.
Troubl~ Shooting.
If the reason for a fault is not an obvious one such as a dead tube or transistor, 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 loca-
lize the defect. Should this method of finding the fault prove unsuccessful, then check the instrument by adopting the method de-
scribed in the adjustment procedure. When the trouble has been found and remedied, the voltages and odjustmnets which are ir~flu
enced by the remedy must be rechecked.
The tolerances stated in the instructions can only be used as a guide for adjustment and control, but any deviations must not be cor-
rected without being sure that the tolerances of the instruments used for making the adjustment are so small as to have no influence
on the measurements.
The instructions in this Monual 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 correction special control equipment and extensive experience, and in these cases it
is necessary to send the instrument to the factory.
Spare Parts.
Please state type and serial number of apparatus when spare parts
are ordered.
Instruments necessary for service and repair:
Frequency Analyzer type ·
21 07
Oscilloscope
Frequency Counter
M..oltimeter (50 IJA)
1019 - 4.66

BROEL & KJ.ER
Ncerum - Denmark
1 .1. Calibration of Indicating Meter . .
METER SWITCH: "Output Voltage"
OPERATION SWITCH: "Scanning off"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR SPEED: "Off"
OUTPUT SWITCH: "Linear"
FREQUENCY SCALE: "400Hz"
1. 2. Output Voltage.
METER SWITCH: "Output Voltage"
OPERATION SWITCH: "Scanning off"
COMPRESSOR SPEED: "Off"
OUTPUT SWITCH: "Linear"
OUTPUT VOLTAGE:
"10"
1. 3. Frequency Response .
a. METER SWITCH: "Output Voltage"
OPERATION SWITCH: "Scanning off"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR
SPEED: "Off"
OUTPUT SWITCH: "Linear"
FREQUENCY SCALE: "400Hz"
b. FREQUENCY RANGE to "5005-10ooo Hz"
c. FREQUENCY RANGE to "5-5ooo Hz"
OUTPUT SWITCH to "High pass"
FREQUENCY SCALE to "400 Hz"
1019, ·1 - 4.66
Output Amplifier
Valid from serial no. 97374
0
r.m
-
P15 i
...::~ -~~~·;.. §_
2107
1019.1
•
~·~
Adjust the OUTPUT VOLTAGE for 10 Von OUTPUT socket.
Deflection on type 1019: 10 V
If necessary adjust P 15.
Check that full scale deflection on type 1019 can be obtained in the entire
frequency range from 5-1 Oooo Hz .
Possible reason for
fault: ,The blocking range of the cam discs on the rear side
of CV 0009 is within the frequenc;y range.
Too
low LF signal across R 92. The voltage should be
approx. 320 mV . If not check item 2.2.
Too low DC voltage on V 10 cathode.
Adjust the OUTPUT VOLTAGE for an 18 dB deflection on type 1019 .
Vary the frequency from 5-5ooo Hz .
Deflection on type 1019:18 dB.
Tolerance:! o .5 dB
Possible reason for fault: Defective tube V 8
Defective filter Z 3,4
Vary the frequency from 5005-1 Oooo Hz.
Deflection on type 1019:18 dB.
Tolerance:± 1 dB.
Adjust
the OUTPUT VOLTAGE for a 20 dB deflection on type 1 019.
Change frequency to 1 00 Hz .
Deflection on type 1019: 19.7 dB.
Tolerance:± o . 2 dB.
Change frequency to 5 Hz .
Deflection on type 1019:4 dB.
Tolerance:± 2 dB .

1.4. Noise.
METER SWITCH: "Output Voltage"
OPER ATION SWITCH: "Scanning off"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR
SPEED: "Ofr'
OUTPUT SWITCH: "Linear"
FREQUENCY SCALE: "400 Hz"
b. OPERATION SWITCH to "Stand by"
1.5. Di stortion.
METER SWITCH: "Output Voltage"
OPERATION SWITCH: "Scanning off"
FREQUENCY RANGE: "5-Sooo Hz"
COMPRESSOR
SPEED: "Off"
OUTPUT SWITCH: "Linear"
1019,1 - 4.66
The instrument must be placed in its case or in other way effectively screened .
Adjust
the OUTPUT VOLTAGE for a 10 V deflection on type 2107.
Measure Noise: min. 70 dB below 10 V.
If the noise level is too high remove tube V 7 and measure the noise from the
output amplifier only: min . 75 dB below 10 V.
Possible reason for
fault: Defective tube V 8
Adjust
the OUTPUT VOLTAGE for a 10 V deflection on type 1019.
Check distortion at different frequencies: max . o . 5%
Attention: Bear in mind that 2107 only allows measurements of distortion down
to around o.5 % without a fi Iter type 1607 connected between type 1019 and
2107 for rejection of the fundamental frequency .
Possible reason for fault: Defective tube V7,8

BROEL & KJ..ER
Ncerum -Denmark
Removal of Tuning Capacitor CV 0009.
Oscillator
Valid from serial no. 97374
1019.2
Remove the right hand side cover (when seen from the instrument front plate) of the capacitor unit CV 0009 .
Set the condenser to fully "turned in" position . The position of the condenser is checked with a plate of insulating material,which
strokes over the stator plates, so that none of the rotor plates is above the stator plates. The scale pointer should now point at 220°.
If not, note carefully down the position of the pointer . Remove the multi-plugs and unsoldering the two leads to t~e oscillator coiI
assembly. Unscrew the two knobs on the tuning spindle and remove the scale rim, pointer and scale. The four screws, which secure
Tuning CaP.<Jcitor CV 0009 to the front plate, can then be unscrewed
Replacing Tuning Capacitor CV0009.
After replacing scale, center it with reference to the spindle by means of a centering bush. Check the position of the condenser
with a
plate of insulating material for fully interleaved capacitor plates and fix the pointer to 220° or to the position noted above.
Attention: Item 2.1. and 2 .2. The frequency -can only be checked by means of a frequency counter or a frequency stan~d and an
oscilloscope. The
voltage sfiould be measured by means of a high impedance (low capacity) tube voltmeter.
0-r-t--+-~
c --If-+--+~~
Output
30kHz and 35 kHz bottom view
2.1 . Fixed
Oscillator.
a. FREQUENCY RANGE: "5005-10ooo Hz"
b. FREQUENCY RANGE to "5-5ooo Hz"
2.2. Variable Oscillator.
a. METER SWITCH: "Output Voltage"
OPERATION SWITCH: "Scanning off"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR SPEED: "Off"
OUTPUT SWITCH: "Linear"
FREQUENCY SCALE: "5Hz"
b. FREQUENCY SCALE to "5ooo Hz"
1019,2 - 4.66
Check the signal on the socket "30kHz and 35 kHz" (pin 4) .
The frequency should
be 35kHz.
If necessary adjust the iron core "C" in Z 2.
The voltage should be approx . 2.7 V.
The frequency should change to 30 kHz .
If not, adjust the air trimmer "D" in Z 2 and check item a again.
Check that the frequency on the "Output" socket (pin 1) is 5 Hz.
If not, adjust the FREQUENCY SCALE ADJUSTMENT . Fine adjustment by a
knob and coarse adjustment by a screwdriver operated capacitor.
In case that the regulation range is too far away set both variable trimmers in
mid position and adjust the air trimmer "8"
1 in Z
~ for 5 Hz.
Check that the frequency is 5ooo Hz .
If not, adjust the iron core "E" in Z 2 and check item a again .

::»
D'
I ~
?
[J
c
? I c
L\1<
~
Ao
/ I \
/ I
P3 P2 P12
rear view
2.3 . Oscillator Voltage.
a. METER SWITCH: "Output Voltage"
OPERATION SWITCH: "Sconning off"
FREQUENCY,RANGE: "5005-1 Oooo Hz"
COMPRESSOR
SPEED: "Standard"
OUTPUT SWITCH:
"Linear"
b. COMPRESSOR SPEED to "Off"
FREQUENCY RANGE to "5-5ooo Hz"
FREQUENCY
SCALE to "5oooHz"
c. FREQUENCY RANGE to "5005-1 Oooo Hz"
FREQUENCY SCALE to "5005Hz"
2. 4. Frequency Drift.
METER SWITCH: "Power Freq. Beat"
OPERATION SWITCH: "Scanning off"
FREQUENCY RANGE: "5-5ooo Hz"
OUTPUT SWITCH: "Linear"
1019,2 - 4.66
Z3 Z3
ve R92
bottom view
Adjust
the OUTPUT VOLTAGE for an approx. half scale deflection on type
1019.
Adjust the iron core in Z 3 to max . deflection.
When FREQUENCY RANGE is changed to "5-5000 Hz" the deflection must
change max . 1 dB .
Turn "Phase" (P
12) on the front plate to min. deflection on type 1019 .
Check the voltage across R 92:320 mV.
If necessary adjust P 3.
Check again the voltage across R 92: 320 mV.
If necessary adjust P 2.
Possible reason for fault: Defective tube V 5
filter Z 3
capacitor C tiJ
Set the FREQUENCY SCALE to exactly the mains frequency
Adjust FREQUENCY
SCALE ADJUSTMENT until a very slow beat shows up.
Check the frequency drift after a period of 20 min. and after 15 hours by ad-
justment of the FREQUENCY SCALE for a slow beat and read the frequency
deviation on the scale .
Tolerance:± 5 Hz for each period.
If necessary adjust the trimmer "A"
After adjustment check item 2.2.
Attention: If an instrument has not been in use for a long period, frequency
drift may occur due to humidity in the oscillator circuit. Therefore
keep tfie instrument switched on 1-2 days before any adjustment.

BROEL & KJ.ER
Ncsrum - Denmark
Pick-up Amplifier
Valid from serial no. 97374 1019.3
Sheet 1
Attention: The-pick-up amplifier can only be checked and adjusted by means of a frequency counter or an oscilloscope and a fre-
--- quency standard . The voltages should be measured by means of a high impedance (low capacity) tube voltmeter.
Check of Pick-up amplifier using "Accel. Gen. ~put"
To check this section set the switches as follows: METER SWITCH: "Vibration Level"
OPERATION SWITCH: "Scanning off"
COMPRESSOR SWITCH:
"Off"
OUTPUT SWITCH: "Linear"
Switches not mentioned here are set in a position according to instructions.
3. 1• Frequency Response.
FUNCTION SELECTOR: "Accel."
ACCELERATION RANGE: "1" {Acc.Gen.)
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY
SCALE: "500 Hz"
b. FREQUENCY RANGE to "5005-10aoo Hz"
3.2. Sensitivity of Displacement.
FUNCTION SELECTOR: "Displ."
DISPL.-VEL.RANGE: "o.01" (Acc.Gen.)
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY
SCALE: "500Hz"
b. FREQUENCY SCALE to "1oooHz"
c. DISPL.-VEL.RANGE to "1" (Acc.Gen.)
FREQUENCY SCALE to "5Hz"
1019,3 - c66
Adjust OUTPUT VOLTAGE for an 18 dB deflection on type 1019.
Change the frequency from 1 0-5ooo Hz.
Deflection on type 1019: 18 dB.
Tolerance:± o .5 dB.
Check and tolerance as under item a.
Adjust OUTPUT VOLTAGE for an input voltage of exactly 904 mV.
Deflection on type 1019: 20 dB.
Tolerance: i: o.2 dB.
If necessary adjust P 10 "Dispi./A.G."
AC voltage on V 1 pin 1: 7,8 V
pin 2: 30 mV
pin 6: 700 mV
Deflection on type 1019:8 dB .
Tolerance:± o.2 dB.
Adjust OUTPUT VOLTAGE for an input
voltage of exactly 9.04 mV.
Deflection on type 1019:19.7 dB.
If necessary adjust P 4 (located on printed circuit XC 0126)
Possible reason for
fault: Deflective capacitor C 29,30
The sensitivity adjustment of P 10 can be set 1.5% higher or lower if it facili-
ties the adjustment of P 4.

3.3. Sensitivity of Velocity.
FUNCTION SELECTOR: "Vel."
DISPL.-VEL.RANGE: "o.1" (Acc.Gen.)
FREQUENCY RANGE: "5-Sooo Hz"
FREQUENCY SCALE:
"500Hz"
b. FREQUENCY SCALE to "1oooHz"
3.4. Sensitivity of Acceleration.
FUNCTION SELECTOR: "Accel."
ACCELERATION RANGE: "1" (Accei.Gen.)
FR-EQUENCY RANGE: "5-Sooo Hz"
FREQUENCY SCALE:
"500Hz"
3.5. Check of Acceleration Range.
Adjust OUTPUT VOLTAGE for an input
voltage of exactly 57 .6 mV.
Deflection on type 1
019: 20 dB.
Tolerance:± o.2 dB.
If necessary adjust P 9 "Vel./ A. G."
AC voltage on V1 pi n 1: 7,8 V
pin 2: 30 mV
pin 6: 700 mV
Deflection on type 1019: 14 dB.
Tolerance:± o .2 dB.
Adjust OUTPUT VOLTAGE for
an input voltage of exactly 7.07 mV.
Deflection on type 1019: 20 dB.
Tolerance:± o.2 dB.
If necessary adjust P 13 "Accei./A.G."
AC voltage on V 1 pin1:190mV
pin 2: 7 mV
pin 6: 165 mV
FUNCTION SELECTOR: "Accel." Adjust OUTPUT VOLTAGE to 20 dB deflection on type 1019.
ACCELERATION RANGE:
"1" (Ac cei.Gen.)
FREQUENCY RANGE: "5-Sooo Hz"
FREQUENCY SCALE:
"500Hz"
b. ACCELERATION RANGE to "10"(Accei.Gen .) Deflection on type 1019:0 dB .
Tolerance:± o .4 dB.
Adjust OUTPUT
VOLT AGE to 20 dB deflection on type 1019.
ACCELERATION RANGE to"1 OO"(Accel.Gen.) Deflection on type 1019: 0 dB.
Tolerance:± o.4 dB.
Adjust OUTPUT VOLTAGE to 20
dB deflection on type 1019.
d. ACCELERATION RAN GEto"1ooo"V\c cei .Gen.) Deflection on type 1019:0 dB.
Tolerance:± o.4 dB .
Check also "Acceleration Range"at
10kHz.
3.6. Check of Di spL-Vei.Ronge.
a. FUNCTION SELECTOR: "Displ ." Adjust OUTPUT VOLT AGE to 20 dB deflection on type 1019.
DISPL.-VEL.RANGE: "o.01" (Accei.Gen.)
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY SCALE: "55 Hz"
b. DIS PL. -VEL.RANGE to "o.1 "(Accel. Gen . ) Deflection on type 1019: 0 dB.
c. DISPL.-VEL.RANGE to "1" (Accei.Gen .)
Tolerance:± o.4 dB.
Adjust OUTPUT VOLTAGE
to 20 dB deflection on type 1019.
Deflection on type 1019:0 dB.
Tolerance:± o.4 dB.
Adjust OUTPUT VOLTAGE to 20 dB deflection on type 1019.
d . DISPL.-VEL.RANGE to "10" (Accei.Gen .) Deflection on type 1019:0 dB.
Tolerance:± o.4 dB.
e. FREQUENCY SCALE to "500Hz" Check and tolerances as under item a- d .
FUNCTION SELECTOR to "Vel."
1019,3 - 4.66

BROEL & KJ.ER
Ncerum - Denmark Pick-up Amplifier 1019.3
right side vie w
3.7. Relay Functions.
b. FUNCTION SELECTOR: "Ace . "
c. FUNCTION SELECTOR to "Auto D-A"
Check
of Pick-up amplifier using"Vel. Gen. Input"
3. 8. Frequency Response .
a. FUNCTION SELECTOR: "Vel ."
DISPL.-VEL-RANGE:
"o.01" (Vei . Gen .)
VEL .GEN.RESPONSE: "Fl at"
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY SCALE : "500Hz"
1019,3 - 4.66
Valid from serial no. 97374 Sheet 2
013
07 06 05
top vi ew
Check by moving the frequency pointer that the relays 0 5-6-7 are energized
according to the following· table.
Frequency scale: •
Relay:
Tolerance:± 10 %
30
05
100
05-06
300Hz
05-06-07
If necessary loosen rotating contact of switch 0 27 (located on the tuning spin-
de I of CV 0009) ond adjust the switching point according to table .
Relays 0
2-3-4 should energize .
Relays 0
2-3 and 0 13 should energize according to position of frequency
scale and cross over switch .
Adjust
the OUTPUT VOLTAGE for a 15 dB deflection on type 1019.
Change the frequency from 5-2ooo Hz.
Deflection on type 1019: 15 dB.
Tolerance:± o.2 dB.

b. VEL.GEN.RESPONSE to "Shaped"
FREQUENCY SCALE to "10Hz"
Frequency scale
Hz
Deflection on type 1019
dB
Frequency scale
Hz
Deflection on type 1019
dB
10
10
700
12.58
Adjust the OUTPUT VOLTAGE for a 10 dB deflection on type 1019.
Change the frequency from 1 0-2ooo Hz and check the deflection on type 1019.
100
200
300
400 500
600
10.26
10.83 11.24
11 .63
11.94 12.30
800 900 1000 1250 1500
2000
12.92 13 .15
13.52
14.16
14.80
16 .19
Tolerance,
for frequencies 10-1000 Hz:± o,3 dB
1250-2000 Hz::!: o,5 dB
3.9. Sensitivity of Velocity.
FUNCTION SELECTOR: "Vel . "
DISPL.-VEL.RANGE: "o.01" (Vei.Gen.)
VEL.GEN.RESPONSE: "Flat"
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY SCALE:
"500Hz"
3 .1 0. Sensiti vi ty of Displ ocement.
a. FUNCTION SELECTOR: "Displ."
DISPL.-VEL.RANGE: "o.Ol" (Vei .Gen .)
VEL.GEN.RESPONSE: "Flat"
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY SCALE: "500 Hz"
b. FREQUENCY
SCALE to "1oooHz"
3.11. Sensitivity of Acceleration.
a. FUNCTION SELECTOR: "Accel."
VEL.GEN.RESPONSE: "Flat"
ACCELERATION RANGE: "1" (Vei.Gen .)
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY
SCALE: "500 Hz"
b. FREQUENCY SCALE to "250Hz"
1019,3 - 4.66
Adjust OUTPUT VOLTAGE for on input voltage of exactly 6.8 mV.
Deflection on type
1019:20 dB .
Tolerance:± o.2 dB .
If necessary adjust P 6 "Vei./V.G."
AC voltage on V 1 pin 1: 450 mV
pin 2:1,8 mV
pin 6:45 mV
Adjust t~ OUTPUT VOLTAGE for an input voltage of exactly 1.07 V.
Deflection on type 1019:
20 dB.
Tolerance:± o.2 dB
If necessary adjust P 8 "Dispi./V.G ."
After adjustment of P 8 check item 3.11
AC voltage on V 1 pin 1: 7,6 V
pin 2:28 mV
pin 6: 680 mV
Deflection on type 1019: 14 dB.
Tolerance:± o.2 dB .
Adjust the OUTPUT VOLTAGE for an input voltage of exactly 8.36 mV.
Deflection on type
1019:20 dB.
Tolerance:± o.2 dB.
If necessary adjust P 7 "Accei./V.G."
After adjustment of P 7 check item 3.10
AC voltage on V 1 pin 1: 340 mV
pin 2:3,5 mV
pin 6:29 mV
Deflection on type 1019: 14 dB.
Tolerance:± o.2 dB.

BROEL & KJ..ER
NCBrum - Denmark
Pick-up Amplifier
1019.3
Valid from serial no . 97374
3.12. Check of .Acce,lerotion Range.
FUNCTION SELECTOR: ".Accel." Adjust OUTPUT VOLTAGE to 20 dB deflection on type 1019 .
VEL.GEN.RESPONSE:
"Flat"
ACCELERATION RANGE: "1" (Vei . Gen .)
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY SCALE: "500 Hz"
b . ACCELERATION RANGE to "10" (Vei.Gen.) Deflection on type 1019:0 dB.
Adjust OUTPUT VOLTAGE
to 20 dB deflection on type 1019.
c. ACCELERATION RANGE td'100"(Vei.Gen.) Deflection on type 1019:0 dB .
Adjust OUTPUT VOLTAGE
to 20 dB deflection on type 1019.
d . ACCELERATION RANGE to "1ooo"(Vei.Gen.) Deflection on type 1019:0 dB .
3. 13. Check of Displ .-Vel . Range.
a. FUNCTION SELECTOR: "Displ." Adjust OUTPUT VOLTAGE to 20 dB deflection on type 1019.
VEL.GEN.RESPONSE: "Flat"
DISPL.-VEL.RANGE: "o.01" (Vei . Gen .)
FREQUENCY RANGE:
"5-5ooo Hz"
FREQUENCY SCALE: "5Hz"
b. DISPL.-VEL.RANGE to "o .1" (Vei.Gen.) Deflection on type 1019: OdB.
Adjust OUTPUT VOLTAGE to 20 dB deflection on type 1019.
c. DISPL.-VEL.RANGE to "1" (Vei.Gen.) Deflection on type 1019:0 dB.
Adjust OUTPUT VOLTAGE
to 20 dB deflection on type 1019.
d. DISPL.-VEL.RANGE to "10" (Vei.Gen.) Deflection on type 1019:0 dB.
e. FUNCTION SELECTOR to "Vel." Check Displ. -Vel. Range again at 500 and 2ooo Hz.
Check and tolerances as under item a-d .
~ · -·--0 -=- :· ·' ·' '· .. -: .. . _.0 ··.. =·- =
r ~ C
1018
2107
3.14. Noise-Microphony.
Sheet 3
a. FUNCTION SELECTOR: "Vel."
DISPL.-VEL.RANGE: "o.01" (Vei.Gen .)
The instrument must be in its case or in other way effectively screened.
Disconnect input signal to both input amplifier "Vel." and "Ace."
1019,3 - 4.66
Check the microphony by gently topping on the front plate of the apparatus .
All deflections ore read in dB below 10 V.
Velocity with velocity generator .
Noise:
Microphony:
45 dB
30"

b. FUNCTION SELECTOR to "Displ." Displacement with velocity generator .
Noise:
Microphony:
c. FUNCTION SELECTOR to "Accl ."
Acceleration with velocity generator.
Noise:
Microphony:
d. FUNCTION SELECTOR to "V el."
Velocity with acceleration generator . Noise:
DISPL.-VEL.RANGE:
11
o.01
11
(Acc.Gen.)
Microphony:
e . DISPL.-VEL.RANGE to
"o.1
11
(Acc . Gen.)
Noise:
Microphony:
f. FUNCTION
SELECTOR to
11
Displ.
11
Displacement with acceleration generator.
Noise:
DISPL.-VEL-RANGE to
11
o.01
11
(Acc . Gen .) Microphony:
g. FUNCTION SELECTOR to "Accel." Acceleration with acceleration generator.
Noise:
ACCELERATION RANGE to
11
1
11
(Acc . Gen.)
Microphony:
Possible reason
for Noise: Defective tube V 2
Defective capacitor C 15, 16
Defective relay 0 2
Possible reason
for Microphony: Defective tube V 1
1019,3 - 4.66
45 dB
40
II
32
II
25
"
32 "
25
II
45 "
40 "
45 "
35
"
50
II
30
II

BROEL & KJ.ER
Ne2rum - Denmark
Compressor
Valid from serial no. 97374
1019.4
To check this section set the switches as follows: OPERATION SWITCH: "Scanning off"
OUTPUT SWITCH: "Linear"
VEL.GEN. RESPONSE: "Flat"
Switches not mentioned here are set in a position according to instructions.
right side view
4.1. Compressor Balance.
METER SWITCH: "Output Voltage"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR
SPEED: "Off"
FREQUENCY SCALE: "400Hz"
4.2. Compression.
pin 1
pin 1
Adjust OUTPUT VOLTAGE for a o.7 V deflection on type 1019.
Adjust P 1 until signals on the anodes of V 3 are equal.
Tolerance:± 2%
Possible reason for fault: Defective diode Q 13
Defective capacitor C 87, 88
Sheet 1
a. METER SWITCH: "Vibration Level"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR
SPEED: ., ·100"
FUNCTION SELECTOR:
"Vel."
DISPL.-VEL.RANGE: "o.1" (Vei.Gen.)
OUTPUT VOLTAGE: "10"
Adjust DISPLACEMENT VELOCITY LEVEL for an 18 dB deflection on type
1019.
FREQUENCY SCALE: "200 Hz"
1019,4 - 4.66

b. DISPL.VEL.RANGE to "1" (Vei.Gen.)
c. DISPL.VEL.RANGE to "10" (Vei.Gen.)
4 . 3. Compressor Speed.
METER SWITCH: "Vibration Level"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR SPEED: "Standard"
FUNCTION
SELECTOR: "Vel."
DISPL.-VEL.RANGE: "1" (Vei.Gen.)
OUTPUT VOLTAGE: "10"
FREQUENCY SCALE: "500 Hz"
b. OUTPUT VOLTAGE to "0"
COMPRESSOR
SPEED
High, Q
Med. Q
Standard
Fast
10
30
100
300
1000
3000
1019,4 - 4.66
Deflection on type 1019: 18 d8.
Tolerance:± o.5 dB.
Deflection on type 1019: 18 dB.
Tolerance:± 1 .3 dB.
012
011 010 09
rear view
08
Adjust DISPLACEMENT-VELOCITY LEVEL for a 20dB deflect ion on type 1019.
Check the min . deflection for all positions of COMPRESSOR SPEED, when
DISPL.-VEL.RANGE is changed from "1" to "10".
COMPRESSOR SPEED: High Q
Med. Q
Min . deflection: approx. 10 dB
14
Standard
Fast
10
30
100
300
1000
3000
17
18,2
6
10
14
17
18,2
18,8
Check that the compressor relays are energized according to the following
table.
FREQUENCY SCALE
30-100
100-300 300-1000
1000-5000
08
08-09
08 08-09
08-09-010
08 08-09
08-09-010
08-09-010-011
08-09 08-09-010
08-09-010-011
80-09-010-011-012
Independent of position of FREQUENCY SCALE
08
08-09
08-09-010
08-09-010-011
08-09-010-011-012

BROEL & KJ.ER
Nc:erum - Denmark
4.4. Frequency Response with Velocity Generator.
METER SWITCH: "Vibration Level"
COMPRESSOR SPEED: "Standard"
FUNCTION
SELECTOR: "Vel."
DISPL.-VEL.RANGE: "1" (Vel. Gen.)
OUTPUT VOLTAGE: "10"
FREQUENCY RANGE: "5-5ooo Hz"
FREQUENCY SCALE: "500 Hz "
Compressor
Valid from serial no. 97374 1019.4
Sheet 2
Adjust
DISPLACEMENT VELOCITY LEVEL for a 19dB deflection on type 1019.
Vary the frequency from 5-2ooo Hz.
Deflecti ~ on type 1019: 19 dB.
Tolerance:± o.5 dB.
By turning DISPLACEMENT-VELOCITY LEVEL it should be possible to obtain
deflections
from -2 dB to 21 dB.
4.5. Frequency Response with Acceleration Generator.
METER SWITCH: "Vibration Level"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR SPEED: "Standard"
Adjust ACCELERATION LEVEL for a 19 dB deflection on type 1019.
Vary the frequency from 1 0-1 Oooo Hz.
FUNCTION SELECTOR: "Accel." Deflection on type 1019:19 dB.
ACCELERATION RANGE: "1ooo"(Accei.Gen.)Tolerance:± o.5 dB.
OUTPUT VOLTAGE: "10"
FREQUENCY SCALE/'1ooo Hz"
4.6. Gain Reserve.
METER SWITCH: "Output Voltage"
FREQUENCY RANGE: "5-5ooo Hz"
COMPRESSOR SPEED: "Standard"
FREQUENCY SCALE: "1oooHz"
b. COMPRESSOR SPEED to "Off"
1019,4 -
4.66
By turning ACCELERATION LEVEL it should be possible to obtaindeflections
from -2 to 21 dB .
COMPRESSOR input disconnected
Adjust the
OUTPUT VOLTAGE for a 20 dB deflection on type 1019.
Deflection on type 1019: Max . 12 dB.
Possible reason for fault: Defective tube V 5.

•
•
•
•

BROEL & KJ.ER
Ncerum - Denmark
D
D
Removal of the Motor Unit.
~
::a
;:.
;,
Motor Drive Circuit
Valid from serial no. 97374
B B
6 D t
I v
l _L
. ..-.---
:.:._. rn-
o-
~
. ·-~---
1-t--
c:::::=l
~
t-r-
·~.
0--_
...s_
0
0
0 t
B A B
P14
D
c
D
1019.5
Sweep Control B
Remove the meter and the lamp
for ·frequency dial. By removing the cam "A" and the four screws "B" it is possible to pull the back
plate away. After removing the multiplug "C" and the four screws "D" holding the motor unit, it is possible to lift the motor up
through the hole in the upper Chassis.
5.1. Adjustment of Motor Speed.
OPERATION SWITCH: "Scanning on"
SCANNING SPEED SELECTOR: "X 1"
SCANNING SPEED: "1 .80"
b. SCANNING SPEED SELECTOR to "2.59"
1019,5 - 4.66
. ..
c:
-7·: ·
~ "
c:
:}1~"
•• c
••
••
c
1019
The speed should be 1. 80° per min.
Tolerance: t
3%
If necessary adjust P 14 (Motor).
The periodic time of the pulses should be 24 m.sec. measured on "SweepCon-
trol "B" pin 6.
The speed should be 2.59° per min.
If necessary adjust potentiometer P 1
The periodic time of the pulses should be 18.69 m.sec.

a V1
a--
V2
b b
c c V3
V4
Printed circuit
XC 0130 d
5.2. Fau lt Traci ng for Mo tor Un it.
a. OPERATION SW ITCH: "Scanni ng off"
SCANNING SPEED SELECTOR: "1"
SCANNING SPEED: "1 .80 "
Measuring Point a b c
DC Voltage -10 v -10 v
-10 v
ov -20 v -20 v
-20 v
ov ov
ov -20 v ov
-20 v
ov
-20 v
1019,5 - 4.66
If the motor does nor work, check the 24 m .sec. pulses on SWEEP CONTROL
Bsocket {pin 6) in order to localize the defect to be in the pulse generator or
in motor unit.
If the pul ses are present on SWEEP CONTROL Bsocket check thedc voltages
on the transistors in the multivibrator.
d e f g h
-10 v
The two rnultivibra-
tions
are working.
ov
- o,5 V +
2V
+
2V
- o,5 V Transi$tor V 1 should
chang ~ over.
-20 v + 2V
- o,5 V -
o,5 V +
2V Transistor V 2 should
change
over.
-20 v -
o,5 V +
2V
- o,5 V +
2V Transistor V 3 should
change over.
ov
+
2V - o,5 V +
2V
- o,5 V Transistor V 4 should
change over.
Connect an oscilloscope to the collector of the transistor which should change
over according
to the table.
a. The pulses can not be obtained on the collector but the pulses are on thebaseo
This transistor or accompanying components may be defective.
b. The pulses can be obtained on the collector. The transistor with which it is
matched is defective.

BROEL & KJJfR
Ncerum - Denmark
Compressor
Pick-up
Amplifier
1019,6-4 .66
0
Position of Components
Valid from seri al no. 97374
1019.6
----l
I
0 I
I
I
I
Sheet 1

Compr~ssor R~Loys
1019,6-4 . 66
,--0---------:---1
I d I
I I
I I
I0 0 I
I I
I I
I I
I ___
0
_________ ~ ___ I
Di fferentiat i ng and Integration Ci rcuits
~--- r ;- ---1
I
I
I
I
I0
I
I
I
V~L. G~n . Input
M~t~r Circuit