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 .

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L\1<
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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.