Terrestrial Receiver; Digital Eng Receiver (To Version 2.5.4) - TANDBERG Alteia Instruction Manual

3.3.2

Terrestrial Receiver

Table 3.4 applies to models M2/PTR/942 and M2/PTR/948[A].
Table 3.4: Tuning the Terrestrial Receiver
Step Action
1. Go to Menu #4, page 8 and ensure the SIGNAL
DEGRADATION mode is switched OFF.
2. Go to Menu #4, page 12 and choose the
appropriate INPUT.
3. Go to Menu #4, page 2 and choose the UHF
CHANNEL and required OFFSET.
4. Go to Menu #4, page 3 and set the GUARD
INTERVAL and OFDM CARRIER MODE to suit the
system hardware.
5. If hierarchy is present (check on page 11), select
the priority multiplex required.
When using the combination 64QAM, 3/4 FEC, 1/32 Guard Interval and 204 packet length (29.454545 Mbit/s), the
demodulator may not always lock up correctly following switch on or after a brief loss of signal. This will be apparent from a
higher than expected BER or lack of video. Normal lock up is achieved by disconnecting and reconnecting the input.
3.3.3

Digital ENG Receiver (to version 2.5.4)

Table 3.5 applies to model M2/PTRE/942 and 948C (to version 2.5.4). The
M2/PTRE/948C also allows a 70 MHz IF – Normal or 70 MHz IF –
Inverted input to be selected through Menu #4.
Table 3.5: Setting up the Digital ENG Receiver
Step Action
1. Go to Menu #4, page 8 and ensure the SIGNAL
DEGRADATION mode is switched OFF.
2. Go to Menu #4, page 12 and choose the
BASEBAND.
3. Go to Menu #4, page 3 and set the GUARD
INTERVAL to suit the system hardware.
4. If hierarchy is present (check on page 11), select
the priority multiplex required.
Instruction Manual: Alteia and Alteia plus Professional Receivers and Decoders
ST.TM.E9200.8
Result
This is a test mode that degrades the picture by a known amount. The status
of the SIGNAL DEGRADATION mode is shown in line 1 of page 1 (DEG
ON | DEG OFF).
This starts the tuning process. The guard interval will automatically set itself
(this can be checked on page 3).
This automatically sets the channel spacing (can be checked on page 6).
The final SAVE action will LOCK the receiver to the chosen incoming
stream.
CAUTION...
(Does not apply to Version 2.3 and later.)
Result
This is a test mode that degrades the picture by a known amount. The status
of the SIGNAL DEGRADATION mode is shown in line 1 of page 1 (DEG
ON | DEG OFF).
This automatically sets the OFDM CARRIER MODE (can be checked on
page 4).
The final SAVE action will LOCK the receiver to the chosen incoming
stream.
Operating the Equipment Locally
Page 3-7