BROEL & KJ)ER
NCI!rum
-
Denm
·ark
2.1.
Voltage
DC
Voltage
+
20 V
20 V
+ 24 V
- 24 V
+
30V
+
56 V
56 V
+
235 V
F8
ZG
0069
F9
D4
ZE 0100
D5
04
ZL
0034
G4
ZG
0069
G5
C on V 30
ZE
0100
Adjustment Procedure
2307.2
Before any repair
or
when a
fault
has
been
found
and corrected the Level Recorder should be
tested according
to
item 3.2
to
3.4
to
make sure
that
the basic
function
is
operative.
AC
Voltage
24 V
"'F
1,2 ZG 0069
24
V-B
4 ZE 0100
25 V
"'D
2,3 ZE 0100
50 V
"'G
1,2
ZG
0069
~
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
,0
0 0 0
I
BrUel
&
Kjcer
I
BrUel
&
Kjcer
I
50 75 mrn
==:::iii:~==:!:!!E:==
50
75
mm
========================~~==~~=========================OdB
2.2.
Writing Speed
PEN
DRIVE:
"On"
INPUT
ATTENUATOR:
"0"
INPUT POTENTIOMETER :
"10"
WRITING
SPEED : " 8 mm/sec"
LOWER
LIM
. FREO.:
"200
Hz"
RECTIFIER RESPONSE :
"RMS"
POTENTIOMETER RANGE:
"50
dB"
WRITING WIDTH:
"50
mm"
QP
0102
PAPER
DRIVE
FUNCTION:
"Cont.
Forward"
PAPER SPEED:
"10
mm/sec"
Paper
:
OP
0102
(OP
0224)
WRITING
SPEED
to
"1000
mm/sec"
PAPER SPEED
to
"100
mm/sec"
2.3.
Resolving Power
PEN
DRIVE:
"On"
INPUT
ATTENUATOR:
"10"
INPUT
POTENTIOMETER:
"10"
WRITING
SPEED:
"16
mm/SeC"
LOWER
LIM.
FREO.:
"200
Hz"
RECTIFIER
RESPONSE:
"RMS"
POTENTIOMETER RANGE:
"50
dB"
WRITING
WIDTH:
"50
mm"
PAPER DR IVE
FUNCTION:
"Cont.
Forward"
PAPER SPEED:
"1
mm/sec"
Paper
:
OP
0102
(OP
0224)
10
.
75
20
dB
Input
signal: 4 V, 1000 Hz.
Start the paper drive
by
pressing
START
and remove the
input
signal while the paper
is
running.
When
the sapphire
has
reached the 0 dB line apply the signal again.
The
paper length
for
a movement
of
the sapphire
from
50 dB
to
0
or
from
0
to
50 dB should
be
62mm
.
Tolerance
± 20%. Measured on the paper 50 - 75
mm
.
If
necessary adjust P 7. Vel. Adj.
Po;;sible reason
for
faults:
Check
as
above.
Defective
feed·back coil
Unbalanced
Input
amp. Check 2 .6
Unbalanced
Output
amp.
Chec~
2.5
Tolerance:
± 20
%.
Measured on the paper 4 - 6
mm
.
If
necessary adjust P 9. Max. Vel.
! \ I
"'r
\
Start the paper drive
by
pressing
START
and adjust the
input
voltage (at approx. 1 kHz)
for
a
sapphire
deflection
to
the 20 dB line.
Change
INPUT
ATTENUATOR
to
"0
dB"
and
back again
to
"10
dB"
. Thereafter
to
"20
dB"
and
back
to
"10
dB"
.
Check
that
the sapphire comes back
to
the 20 dB line. Tolerance: ± 0.5 mm.
Possible reason
for
faults: Incorrect setting
of
P 6.
Check
2.4
Too
low
driving
PoWer
. Check 2.8
Unbalanced
input
Amp
. Check
2.6
Unbalanced
output
C'mp.
Check 2.5
. 2307
from
serial no 377302
2-1
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