Toa EXES-6000, Operating And Troubleshooting

Page: 30 / 60

Fig. 32 shows a single LM unit in which zones are
divided into 2 by cutting JP6:
Zone 1 (P1): Stations No. 200 — No. 203
Zone 2 (P2): Stations No. 204 — No. 207
(A) Here, supposing paging is made from station
No. 202 over zone 2 by using Link No. 1 Fig.
32
(1) the voice from mic of station No. 202 passes
through Tx
3
... HW-T ... Ty
1
and is transmitted
to Link No. 1, where it is held.
(2) Rx
2
and Py
2
close at the next timing, and the
voice that has been held branches into 2
outputs after passing through Rx
2
... HW-R ...
Py
2
: one goes to an external PA amplifier for
zone 2 via transformer, and the other is sent
back to the LM unit and transmitted to the
speaker of each station (No. 204 through
No.207) after passing through JP7 through
JP9, R522, R622, R722 and R822.
(B) When all-call paging is made from station No.
204 by using Link No. 1 (Fig. 33),
(1) The voice from mic of station No. 204 passes
through Tx
5
...HW-T ... Ty
1
, and is transmitted
to link No. 1, where it is held.
(2) Rx
2
and Py
0
close at the next timing, and the
voice that has been held passes through Rx
2
... HW-R ... Py
0
.
(3) The signal sent to P
0
is routed to all zones
(No. 1 through No. 15) via jumper wire (JW).
Then the signal to each zone is divided into 2
signals, and one goes to an external PA
amplifier for each zone through transformer,
and the other is sent back to the LM unit, and
then to the speaker of stations No. 200 to No.
203 through JP3 to JP5 and to the speakers of
stations No. 204 to No. 207 through JP7 to
JP9.
Here, station No. 204 is a paging station. Lest
the voice from this station should come into
its speaker, it is so designed that the voice is
attenuated in the LM unit. This also applies to
the stations in conversation. When any sta-
tion in the same paging group does not need
to be paged, this can be accomplished by
cutting the resistor (R122/R222.../R822) in the
LM unit for that station.
— 28 —
1-4. Paging Signal Flow