User's Manual

6051412900 Rev -

CARRY-CODER II Transmitter <EXPERT> Operating Mode Configuration

NOTE: Most users will operate the system in <NORMAL> mode. The <EXPERT> mode provides user control of certain DVB-T

parameter settings. Here is a listing of those parameters in operating menu sequence:

• Resolution (1/1, 3/4, 2/3, 1/2)

• GOP Structure (I, IP, IBP, IBBP, 422IBBP)

• GOP Length (6, 12, 18, 24)

• Constellation (QPSK, 16QAM, 64QAM)

• Guard Interval (1/32, 1/16, 1/8, 1/4)

• Code Rate (1/2, 2/3, 3/4, 5/6, 7/8)

Please refer to Section 4.6

for a table describing how these DVB-T parameters are applied to the three factory presets for signal

robustness.

Section 0 contains operating instructions for using the EXPERT mode.

Certain operating parameters are used on a repeated basis. These settings should be stored in memory as

Configuration Presets 2 through 9. This provides fast restoration of parameter settings that are used most often.

A good backup plan is to maintain commonly used parameter settings (i.e., high robustness and maximum power) in a

known configuration preset memory. If a problem occurs that won’t go away, a known good parameter setting can be

recalled from memory. This should help to resolve a problem. Another method is to adjust each parameter one by

one, beginning with changing the operating frequency, to ensure that the link is not being affected by another signal

on your selected operating frequency.

The <DEFAULT> option in the RECALL CONFIGURATION Menu will set all the parameters of the CCII to the factory

defaults.