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13

Press [DAB] and [CHARACTER] at the same time under the DAB
tuned condition.  (When the software version is 1.04, press [DAB]
ten times while [CHARACTER] is kept pressed.)
The bit error rate is displayed.

1

: PIC error rate

2

: MSC error rate

3

: Bit rate

4

: In case of audio service

F : 48 kHz sampling
H : 24 kHz sampling

In case of data service

S : stream data
F : FIDC
P : pocket data

5

: DAB decoder status information

Check the contents in binary notation.

Bit 7

: not used

Bit 6

: 1 when AFC is converged.

Bits 5 to 3 : The number of CRC errors during MPEG

decode

Bit 2

: 1 when initial pulling-in is complete.

Bits 1, 0

: Contents of DAB frame length judgment

Press [DISPLAY] and [ENTER] at the same time under the DAB tuned
condition.
Audio information for service that is selected at present is displayed.

1

: Bit rate

2

: Audio contents

stereo

= stereo broadcast

joint

= joint stereo broadcast

dual

= dual channel broadcast

single

= single channel broadcast

stream = stream data broadcast
FIDC

= FIDC data broadcast

Packet = packet data broadcast

3

: Sampling frequency

4

: Protection level

5

: Transmission mode

2 5 6 k b p s
4 8 k H z

s t e r e o

P L v 2 m o d e 1

1

3

4

5

2

F : 0 . 0 0 E + 0 0

M : 0 . 0 0 E + 0 0

2 5 6  F

S T : C 5

1

5

4

2

3

0

0

1

1

96 ms

48 ms

24 ms

Judgment impossible

1

0

0

1

14

Procedure:
1. Tune the set to 98 MHz.
2. Adjust IFT202 for 0V reading on the digital voltmeter.

................... NULL

3. Adjust IFT203 for a minimum reading on the distortion meter.

................... MONO Distortion (THD)

4. Repeat the adjustments of 2 and 3 several times.

Note :

 When replacing the ceramic filter, perform this alignment.

If the front end unit fails, it is difficult to repair the inner circuits, so
replace the entire front end unit.

•

Standard Setting of FM Stereo RF Signal Generator.

Ω

STEREO STANDARD SIGNAL

MONAURAL

STANDARD SIGNAL

Carrier frequency : 98MHz
Modulation : Audio 1kHz
    Main channel (L+R) : 33.75kHz

deviation

    Sub channel (L–R)

: 33.75kHz

deviation

    Pilot

: 7.5kHz

Deviation

Carrier frequency : 98MHz
Modulation : Audio 1kHz

75kHz deviation

Ω

Ω

All the settings are performed in the Factory Preset state. (Refer to page 13.)

15

Procedure:
1. Tune the set to 98 MHz.
2. Adjust RV203 to the point (moment) when the “STEREO” and

“TUNED” indicators will change from going off to going on.

Procedure:
1. Tune the set to 98 MHz.
2. Press  [DISPLAY]  button to display the digital signal, then adjust

RV202 to be display as “Signal 70dB”.

Ω

µ

Ω

Ω

Ω

L-CH Stereo separation : A – B
R-CH Stereo separation : C – D

The separations of both channels should be equal.

Ω

Ω

FM stereo

Signal generator

Output channel

L-CH

R-CH

R-CH

L-CH

Level meter

connection

L-CH

L-CH

R-CH

R-CH

Level meter

reading (dB)

A

B

Adjust RV301 for minimum
reading on Level meter

C

D

Adjust RV301 for minimum
reading on Level meter

16

Procedure:
1. Set AM RF signal generator so that the AM antenna input level

becomes 74dBµ/m.

2. Adjust the position of RV201 so that “ TUNED” lights.

[MAIN BOARD] — Component Side —

µ

µ