1-8-6 SINAD
METER
CALIBRATION
PREREOUISITES:
1-8-1 POWER
SUPPLY
CALIBRATION
EQUIPMENT
REQUIRED: 1 AUDIO ANALYZER
FIG
U
RES:
STEP
1-4
PROCED
URE
1. Apply Power
to COM-1208.
Allow 5 minute warm-up
period.
2.
Connect
Test Equipment
as shown
in Figure 1-4.
3.
Press AUDIO
GEN
Instruments Key
(a).
4.
Set
Audio
Generator
2
to ON.
5.
ff
Optional
Audio
Generator
2 is installed,
set
Tone Frequency for 10A0.0 Hz
and
Shape to
srwE.
6. Set
Audio Generator 2 Level
tor 1.41 Vp.
7.
Set
Audio
Generator
1
to OIV.
8. Set
Audio
Generator
1 Format
to
IONE.
9. Set
Audio
Generator
1 Tone Frequency
to
2800.0 Hz.
10.
Set
Audio
Generator
1
Shape to SIIVE.
11.
Set
Audio Generator
1
Level to 0.14
Vp.
12.
Set
Audio
Generator
1 Mode
to CONT.
13.
Set
Audio Analyzer
to
measure
SINAD
with filters
off
.
14. Verify
Audio Analyzer reads approximately 20
dB SINAD.
15. Press MTRS Instruments Key
(a).
16.
Select
SINAD
Meter
Operation.
17.
Set SINAD
Meter
Source to
AUDIO/DATA-IN.
18.
Set
Peak Hold
to
OFF.
19.
Set
Average
to OFF.
20.
Set
Low-Pass Filter
to
20 kHz.
21. Verify
SINAD Meter Reading matches Audio Analyzer
(11.1
dB).
lf not,
go
to Step 23.
22.
Set COM-120B
Power
to OFF
and disconnect test equipment.
1-16
1-8-6
SINAD
METER
CALIBRATION
PREREQUISITES:
1-8-1
POWER
SUPPLY
CALIBRATION
EQUIPMENT
REQUIRED:
AUDIO
ANALYZER
FIGURES:
1-4
STEP
PROCEDURE
1.
Apply
Power
to
COM-120B.
Allow
5
minute
warm-up
period.
2.
Connect
Test
Equipment
as
shown
in
Figure
1-4.
3.
Press
AUDIO
GEN
Instruments
Key
(4).
4.
Set
Audio
Generator
2
to
ON.
5.
If
Optional
Audio
Generator
2
is
installed,
set
Tone
Frequency
for
1000.0
Hz
and
Shape
to
SINE.
6.
Set
Audio
Generator
2
Level
for
1.41
Vp.
7.
Set
Audio
Generator
1
to
ON.
8.
Set
Audio
Generator
1
Format
to
TONE.
9.
Set
Audio
Generator
1
Tone
Frequency
to
2800.0
Hz.
10.
Set
Audio
Generator
1
Shape
to
SINE.
11
.
Set
Audio
Generator
1
Level
to
0.14
Vp.
12.
Set
Audio
Generator
1
Mode
to
CONT.
13.
Set
Audio
Analyzer
to
measure
SINAD
with
filters
off.
14.
Verify
Audio
Analyzer
reads
approximately
20
dB
SINAD.
15.
Press
MTRS
Instruments
Key
(4).
16.
Select
SINAD
Meter
Operation.
17.
Set
SINAD
Meter
Source
to
AUDIO/DATA-IN.
18.
Set
Peak
Hold
to
OFF.
19.
Set
Average
to
OFF.
20.
Set
Low-Pass
Filter
to
20
kHz.
21.
Verify
SINAD
Meter
Reading
matches
Audio
Analyzer
(±1.1
dB).
If
not,
go
to
Step
23.
22.
Set
COM-120B
Power
to
OFF
and
disconnect
test
equipment.
1
-1
6
Scans by ArtekMedia © 2008
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