Sharp MD-X5H Service Manual page 18

MD-X5H/CP-X5H
• ASPM SCAN: 87.50MHz
• Only RDS signal is memorized by ASPM because RDS signal has PI code and is suitable and convenient for ASPM operation.
ASPM
Comparing field strength, only one strongest RDS station is memorized of all stations (repeater relay stations) that have same
PI code.
Same PI code — freq: different
PS: same
PTY: same
[For example] Pickup and memorized to preset CH.
f 1
f 2 f 3
P 1 (PI cord)
PS 1 (Station Name)
Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM.
• If tentative - ASPM operation is repeated intententionally, never memorized (over write) at the same frequecy.
1st time ASPM strongest stations of each pi are memorized.
ASPM is not only very usefull for PTY search, but also EON operation.
2nd time ASPM 2nd strong stations of each pi are memorized and so on.
PTY search function is equal to FM band search function as a result.
1. Introduction of RDS for MD-X5H
MD-X5H RDS function is equal to adding EON feature to the current CD-C75H RDS.
EON feature is EON—PTY and EON—TI.
Although PTY and TI indicators are separated, PTY contains TI in the PTY items (software) like current PTY search items.
NEWS,
EON—PTY and EON—TI are basically stand-by
2.The difference point from current CD-C75H RDS. (CD-C75H — MD-X5H)
1. PTY item: added TA.TTL 18 kind.
2. Each "TP", "TA" ind. light up or go out individually.
"TA" ind. doesn't light up on current model, CD-C75H due to none EON—TI.
3. Added 3 indicators(in FL) due to adding EON feature.
EON: Lights up only during receiving EON data (14A).
TI: During EON-TI stand-by
During receiving ON station.
PTY: During EON-PTY stanb-by
During receiving ON station.
4. No adjust type (None adjusting circuit.)
5. Added EON button.
6. Need to change RDS logo due to add EON feature.
7. Added EON—TI, EON—PTY function.
3. Summary of MD-X5H RDS—EON operation
EON—PTY: Select and set the desired "PTY"
PTY automatically
cally at the end of PTY(ON) i.e. after changing to another PTY(except AFFAIRS) or cancelling to receive
PTY of ON station midway.
EON—TI: Select and set the "TI"
cally
ie after TA(ON) is over or cancelled to receive TA of ON station midway.
When switching TN
In case of exist 2 more stations having the desired(specified) "PTY" or "TI", the receiver will select and
switch to ON station comparing field strength at the same time. But when the frequency of ON station
exists in the preset-memory, then reciver switches straight to that ON station(CH), without comparing field
strength so can make a quick switching from TN—ON station. Preset memory takes priority of switching
TN—ON station.
therefore ASPM is usefull not only for PTY search but also for rapid EON switching. Anyway MD-X5H's
EON is basically stand-by and receiving method, along with the Guidelines for EON implementation.
108.00 MHz.
Each PI has AF'S list by individually.
Exa: P1 has f
P2 has f
(AF'S)
f 5 f 4 f 6
f 7 f 8
P 2
P 3
PS 2
PS 3
AFFAIRS, INFO,
EON—PTY
Can select and stand-by
Light up
blink.
Light up
blink.
stay and listen to PTY of ON station
stand-by
stay and listen to TA of ON station
ON station.
, f , f (same PTY).
1 2 3
, f (same PTY).
4 5
f 9 f 10
f 11 f 12 f13
P 4
PS 4
ALARM, TI
EON—TI
Can select and stand-by
receive the desired program of ON station.
stand-by switch to ON(other network) Station at the start of desired
switch to ON station at the start of traffic announcement automati
switch back to TN station autmatically at the end of TA(ON).
– 18 –
(TTL 17 kinds)
switch back to TN(This net) station automati