Leader Electronics Corp. LT 416, Инструкция по эксплуатации, Страница: 28 / 50

4.10.6 RF Setting Example
This section describes an example to set the FRANCE VHF FB channel.
(1) See Section 5.2, "Broadcast System/Channel Plan by Country/Region" and find
"France. "According to the table, the SECAM system and country number "25"
will be obtained.
Finland PAL CCIR VHF(B) 5 CCIR UHF(G) 7
Puerto Rico NTSC USA [VHF] 0 USA UHF 1
France SECAM FRANCE [VHF] 25 FRANCE [UHF] 26
Polynesia SECAM FOT [VHF] 28
Bulugaria SECAM OIRT [VHF](D) 23 CCIR UHF(K) 24
(2) Refer to Section 5.3, "Channel Plan Table" and find the "SECAM FRANCE [VHF]" table.
(3) Select the SECAM by pressing the SYSTEM key
o
.
(4) Press the COUNTRY/CHANNEL key
y
for the country selection mode (COUNTRY).
(5) Display "25" on the COUNTRY/CHANNEL display
u
by pressing the SELECT key
i
.
(6) Press the COUNTRY/CHANNEL key
y
for the channel selection mode (CHANNEL).
(7) Display "2" on the COUNTRY/CHANNEL display
u
by pressing the SELECT key
i
.
4.10.7 Sound Subcarrier Level Selection
The sound subcarrier signal is added to the RF signal when the instrument is shipped
from the factory. The subcarrier level can be reduced about 20 dB.
To reduce the level, hold down the COUNTRY/CHANNEL key
y
until "oF" appears on
the COUNTRY/CHANNEL display
u
.
To obtain the original level, hold down the COUNTRY/CHANNEL key
y
until "on"
appears on the COUNTRY/CHANNEL display
u
.
A subcarrier noise may be superimposed on the RF signal. Set the subcarrier "oF," in
this case.
4-8
ch. No. LED display
SECAM FRANCE [VHF]
fv (MHz) fs (MHz)
F A
F B
F C 1
1
2
3
47.75
55.75
60.50
54.25
62.25
67.00
Countries/Areas Number
RF System
25
L