TANDBERG Alteia Instruction Manual page 142

Menus
C.7.6 Digital ENG Input Menu Pages
This section applies to the M2/PTRE/xxx models.
The input is the IF connector.
Table C.10: Digital ENG Receiver Input Menu (#4) Pages,
Pages Display
1 #4 INPUT DEG OFF 31/124
POST VITERBI
n.n E – nn
2 #4 INPUT
Disabled UHF CHANNEL
3 #4 INPUT
selectable GUARD INTERVAL
1/32
4 #4 INPUT
selectable OFDM CARRIER MODE
2K
5 #4 INPUT
CHANNEL SPACE
8MHz
6 #4 INPUT
MODULATION
16QAM
7 #4 INPUT
FEC RATE
HIGH ½
8 #4 INPUT
selectable SIGNAL DEGRADATION
OFF
9 #4 INPUT
POST RS ERRORS
nnn
10 #4 INPUT
HIERARCHY MODE
ALPHA = 1
11 #4 INPUT
selectable HIERARCHY STREAM
HP
12 #4 INPUT
selectable INPUT SELECTION
BASEBAND NORMAL
12 #4 INPUT
selectable INPUT SELECTION
IF 70MHZ NORMAL
13 #4 INPUT
editable LIMITS BER
n.n E - nn
When using the combination 64QAM, 3/4 FEC, 1/32 Guard Interval and
204 packet length, please refer to the CAUTION on the following page.
Page C-18
Description
This page dynamically displays the current Post-Viterbi BER value.
This is the value shown on the front panel BER meter.
32/134
Although this page is displayed by the PTRE it is disabled.
8MHZ
32/124 This page sets the guard interval between consecutive symbols on
each carrier to prevent inter-symbol interference.
33/124
This page sets up the carrier mode of the receiver front end.
34/124 This page displays the band plan channel spacing using this page.
Valid values are determined by the system hardware.
35/124 This page displays the channel coding (constellation).
36/124 ALPHA ¹ 0: This non-editable page displays the HIGH and LOW
FEC code rates when the transmission is hierarchical.
LOW 2/3 ALPHA = 0: This non-editable page displays a single FEC RATE
when the transmission is non-hierarchical.
37/124 A test mode which degrades the incoming signal. In the
M2/PTRE/942 model it should be set to OFF. The status on the
signal degradation is shown on page 1 (DEG OFF).
38/124 This page displays the number of errors in a single packet after
Viterbi correction.
·
If the error is 15 or more, GREATER THAN 255 ERRORS is
displayed.
·
If the input is not locked, INPUT NOT LOCKED displayed.
39/124 ALPHA = 0 means that it is a non-hierarchical transmission.
310/124 In hierarchy mode, this page allows a selection between high and
low priority streams.
311/124
Allows the input connector to be chosen.
See next line for PTRE/948C.
311/124 Allows the lower or upper side-band to be chosen.
This applies to PTRE/948C only. UHF and Base-band options may
be displayed but IF 70 MHz is the only active input.
312/12 This page allows the limit Post-Viterbi BER threshold. An alarm is
generated if the BER is above the threshold.
Instruction Manual: Alteia and Alteia plus Professional Receivers and Decoders
Options
None
/ , / , / , ¼.
1 1 1
32 16 8
2K
8K (M2/PTR/948[A] only)
6 MHz (s/w ver 2.4),
7 MHz (s/w ver 2.4),
8 MHz
QPSK, 16QAM, 64QAM
1 / , 2 / , 3 / , 5 / , 7 / .
2 3 4 6 8
OFF, 1 - 7
000 - 254
OFF (hierarchy = 0)
1, 2, 4
HP (high priority)
LP (low priority)
BASEBAND –NORMAL
BASEBAND –INVERTED
IF 70MHZ NORMAL (LSB)
IF 70MHZ INVERTED (USB)
ST.TM.E9200.8