PRELIMINARY DATA SHEET
MSP 44x8G
The ERROR_RATE value of 700 corresponds to a
BER of approximately 5.46*10-3/s.
6.3.1.2. Function in Manual Mode
If the manual mode (MODUS[0]=0) is required, the
activation and configuration of the Automatic Switching
feature has to be done as described in Table 6–5.
Note, that the channel matrix of the corresponding out-
put channels must be set according to the
NICAM mode and need not to be changed in the
FM/AM-fallback case.
Individual configuration of the threshold can be done
using Table 6–5, whereby the bits [0] and [11] of
AUTO_FM are ignored. It is recommended to use the
internal setting used by the standard selection.
The optimum NICAM sound can be assigned to the
MSP output channels by selecting one of the “Stereo or
A/B”, “Stereo or A”, or “Stereo or B” source channels.
Example:
Required threshold = 500: bits [10:1]=00 1111 1010
Table 6–5: Coding of Automatic NICAM/Analog Sound Switching;
Reset Status: Mode 0;
Automatic Sound Select is on (MODUS[0] = 1)
Mode
Description
AUTO_FM [11:0]
ERROR_RATE- Source Select:
Threshold/dec
Addr. = 00 21
Input at NICAM Path1)
hex
1
Automatic Switching with
internal threshold
Bit[11]
Bit[10:1] = 0
= ignored
700
NICAM or FM/AM,
depending on
(Default, if Automatic Sound
Select is on)
Bit[0]
= ignored
ERROR_RATE
2
Automatic Switching with
external threshold
(Customizing of Automatic
Bit[11]
Bit[10:1] = 25...1000
= threshold/2
= ignored
set by customer;
recommended
range: 50...2000
Sound Select)
Bit[0]
= ignored
1)
The NICAM path may be assigned to “Stereo or A/B”, “Stereo or A”, or “Stereo or B” source channels
(see Table 2–2 on page 11).
Table 6–6: Coding of Automatic NICAM/Analog Sound Switching;
Reset Status: Mode 0;
Automatic Sound Select is off (MODUS[0] = 0)
Mode
Description
AUTO_FM [11:0]
ERROR_RATE- Source Select:
Addr. = 00 21
Threshold/dec
Input at NICAM Path
hex
0
Forced NICAM
Bit[11]
= 0
none
always NICAM; Mute in
(Automatic Switching disabled)
Bit[10:1] = 0
case of no NICAM available
Bit[0]
= 0
= 0
1
2
3
Automatic Switching with
internal threshold
Bit[11]
700
NICAM or FM/AM,
depending on
Bit[10:1] = 0
(Default, if Automatic Sound
Select is on)
Bit[0]
= 1
ERROR_RATE
Automatic Switching with
external threshold
(Customizing of Automatic
Sound Select)
Bit[11]
Bit[10:1] = 25...1000
= 0
set by customer;
recommended
range: 50...2000
= threshold/2
Bit[0]
= 1
= 1
Forced Analog Mono
(Automatic Switching disabled)
Bit[11]
Bit[10:1] = 0
Bit[0] = 1
none
always FM/AM
Micronas
75
MICRONAS [ MICRONAS ]
