5.4 Block Description
5-23
ANTENNA BAR INDICATION
This indicates ratio (SNAD) between the level of audio range and the level of noise
range. Just as SQ control, they are detected by SQ Cont inside DSP.
Adequate SINAD conversions of AF output are below.
- No antenna indication : no signal received.
- One antenna
: below 20 dB SINAD
- Two antennas
: 20 dB to 40 dB SINAD
- Three antennas
: over 40 dB SINAD
COMMUNICATION WITH REMOTE HANDSETS
Communication between the Transceiver unit and a Remote Handsets are carried out
using RS-485.
The communication speed is 57.6 kbps/asynchronous communication and is carried out
with multi-processor function. With this equipment, polling is carried out at all times
towards each Remote Handset to monitor the state of it. For example, when any key on
a Remote Handset is pressed, a responding action will be carried out on the Transceiver
unit side and also sends its control command to the Remote Handset.
MULTI-PROCESSOR FUNTION
This is a function installed in H8S CPU. This function allows the shared use of
communication line between multiple CPUs and TX/RX of data through asynchronous
serial communication by adding multi-processor unit to it.
Fig. 5.4.19 Multi-Processor Unit
1
1
1
1
1
0
0
0
D0
D2
D3
D0
D2
D3
D7
D7
Stop
bit
Stop
bit
Start
bit
Start
bit
MPB
MPB
idling
MPB: Multi Processer Bit
ID data
Data
CPU
(H8S)
FM-8800S, D
CPU
(H8S)
Remote Handset
(HS-8800)
CPU
(H8S)
DMC I/F
(IF-8820)
CPU
(H8S)
Remote Handset
(HS-8800)
CPU
(H8S)
Remote Handset
(HS-8800)
CPU
(H8S)
Remote Handset
(HS-8800)
ID=1
ID=2
ID=3
ID=4
DATA A, B
Polling
Polling
Reply
Note;
Connection of DMC I/F cannot
be performed in the Russian Ver.
Содержание FM-8800
Страница 3: ......
Страница 4: ......
Страница 5: ......
Страница 6: ......
Страница 7: ......
Страница 8: ......
Страница 9: ......
Страница 10: ......
Страница 12: ... Addenda No 9 of this page is missing ...
Страница 13: ......
Страница 18: ......
Страница 36: ......
Страница 62: ...2 1 Main Unit 2 11 Photo 2 1 21 PANEL 05P0772 A side Photo 2 1 22 PANEL 05P0772 B side LCD p c b ...
Страница 63: ...2 1 Main Unit 2 12 Photo 2 1 23 RTC board 05P0804 Russian Ver ...
Страница 235: ......
Страница 236: ......
Страница 237: ......
Страница 238: ......
Страница 239: ......
Страница 240: ......
Страница 241: ......
Страница 242: ......
Страница 243: ......
Страница 244: ......
Страница 245: ......
Страница 246: ......
Страница 247: ......
Страница 248: ......
Страница 249: ......
Страница 250: ......
Страница 251: ......
Страница 252: ......
Страница 253: ......
Страница 254: ......
Страница 255: ......
Страница 256: ......
Страница 257: ......
Страница 258: ......
Страница 259: ......
Страница 260: ......
Страница 261: ......
Страница 262: ......
Страница 263: ......
Страница 264: ......
Страница 265: ......
Страница 266: ......
Страница 267: ......
Страница 268: ......