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BRUEL & KJAER 1023 - Checking Procedure; Scale Alignment and Frequency Display Checks; Output Voltage and Frequency Response Verification

BRUEL & KJAER 1023
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BROEL & KJA:R
Nrerum
-
Denmark
Ext. 121
Menuel
Lin
= O,SmVtHz 0
to
10V
lo.~
1V!OchlV@ 1
to
10V
Compressor
V31
Moduletion
Freq.
Hz
tuning
Lin
Log
,",,'
:t
Checking Procedure
1023.2
On
ZI 0032
_
~2_
-------
----
----
----
----
_
---
___
I
Ver.
Osc.
240
to
200 kHz
162
.---
_______
~Xl/S~----"9:"----..--~
modulation
TTL
1
!A2
FA2
Pi
----02-
fVOr20-:i20kH-;~n-;3Vp-p-
--
---
-
C2
-
--
-
---
ffix
10
kHz
TTL
Frequency
Counter
120
kHz
sine
Turn
Off
I'll
240
to
200
kHz TTL
I
I
1
Power 5upp
ly
I
1
_______________
-
__
-
_____________
I
ZE
0151
Fixed
Osc.
-~
120 kHz sine
150
mV
RMS
Load
-~
Generator
Generator:
"On"
Ref. Signal:
"Off"
Sweep Control:
"Manual-Log"
Compressor Speed:
"Off'
Output
Voltage:
"5"
Modulation
Frequency:
"Off"
Output
Attenuator:
"Load"
Counting Time:
"1
s"
rear Frequency Range
Adj.
"Full"
Ref. Signal
to
"On"
Ref. Signal
to
"Off"
Sweep Control
to
"Manual-Log"
5.75
Set Frequency Dial
to
exactly
10Hz
and adjust Scale
Alignment
for
10.0
Hz
on
the
Digital
Frequency Display.
The Display should
now
correspond to
the
position
of
the
Frequency Dial
within
a tolerance
of ± 3% of reading
through
the
whole
range.
At
approx.
9500,0
Hz
the
Counting Time is
automatically
changed
to
"0,1
s"
and the deci-
mal
point
disappears.
With
Sweep Control in
"Lin."
mode
the
accuracy between Frequency Dial and Display should
be ±
200
Hz
through
the range.
The Frequency
Display should
now
read between
970
and
1030
Hz.
Turn
Frequency Dial
out
of range and check on the
Meter
that
the
Output
signal disappears
and
that
the Frequency Display is blanked.
Connect an RMS reading
Voltmeter
to
"Load"
and adjust
Output
Voltage
for
10
V RMS at an
output
frequency of approx.
1000
Hz.
The
1023
Voltmeter
should
now
read
full
scale ± 2%.
Reduce
Output
Voltage
to
a reading
of
f. ins!.
-2
dB and check the frequency response
to
be
within
±
0,2
dB referred
to
1
kHz
from
10Hz
to
20
kHz.
Turn
Output
Volta~
to
read
10
V RMS deflection
on
the
1023
Voltmeter
at a frequency of
1 kHz.
Connect a
150/10W
resistor
to
the
"Load"
terminals
and check
that
the
output
voltage
does not drop more
than
0,2
dB.
Increase
Output
Voltage and check
that
the
Distortion lamp comes on
at
an
output
voltage
of
. approx.
11,5
V RMS
into
150
corresponding to
an
output
current
of
0,76
ARMS.
Valid
from
serial no.
523774
2-1

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