- 21 -
PSPT 1000
s
eleCting
Channel
/
frequenCy
set ting
In this menu, you can choose the channel or frequen cy setting for the adjust-
ment of the RF output. The channel setting covers the range of channels C5 …
C12 and C21 … C69, the frequency setting covers the range from 42.0 MHz
to 860.0 MHz.
—> The COFDM signal is normally transmitted with a bandwidth of
8 MHz. This means that you can only use the channel centre fre-
quency of the existing channel grid in the range of channels C21 …
C69 (frequency grid 8 MHz). The CCIR channel grid is 7 MHz in
the range of the lower frequency bands (channels C5 … C12). If
8 MHz COFDM signal packages are transmitted in these channel
ranges, this will result in interference (overlapping) and transmission
problems.
For programming in these channel ranges and in the frequency
ranges below them, we recommend to reduce the bandwidth of the
COFDM signal to 7 MHz (page 27) – or – to use 8 MHz bandwidth
in band I/III, use frequency setting and the recommended frequency
grid shown on page 32.
Please note thereby that many receivers cannot receive the channel
ranges 306 … 466 MHz (S21 … S41).
Bx 4A
/B
Freq.
OUTPUT
• Use the
buttons to select channel setting "
Channel
" or frequency set-
ting "
Freq.
".
• Press the
button.
—> The "Setting the output channel" or "Setting the output frequency" –
"
OUTPUT
" menu is activated.
Содержание PSPT 1000
Страница 1: ...Assembly Instruction PSPT 1000 ...