Adtec EN-20, User Manual

Page: 13 / 49

Number available
see note
below table
Minor
Channel
Number
Configures
​
minor channel number for ATSC text field;
0-999
available
*.ECMD# MIN
Important: setting the Major Channel Number to zero (0) will equate to setting a single-part
channel number in ATSC applications.
RF Tx Menu
The following diagram illustrates the structure and flow of the QAM
​
RF Tx Menu
​
on the
Adtec EN-20 device. This menu will not be available on units without the optional QAM
modulator.
Control Function Options API Command
Modulator
Encoding encoding standards being applied.
Annex A is used world-wide;
Annex B is used in North America.
None disabled the modulator and
allows for manual configuration of
the TMR. Annex A
Annex B
None *.ECMD0 QAM
MOD_ENCODING
Modulator
Mode rate of data transfer within the
encode 64
256 *.ECMD0 QAM
MOD_MODE
Modulator
Output
Format selects between normal and
inverted output Normal
Inverted *.ECMD0 QAM
MOD_INVERT
UpConversion
Channel Congruent with the new EIA
(North America) channel plan -
valid range is 2 through 135
inclusive. text field;
values are
2-135 *.ECMD0 QAM
UPCON_CHANNEL_NU
M
UpConversion
Power RF output power in dBmV 45 dBmv
to 56
dBmv *.ECMD0 QAM
UPCON_POWER_LVL
UpConversion
Frequency Center frequency of the QAM RF
output. Direct entry of center
frequency corresponding to the
new EIA (North America) channel
plan will return a valid channel
number in the channel field.
Entering frequencies that do not
correspond to the EIA (North 57 to 861
MHz *.ECMD0 QAM
UPCON_OUTPUT_FRE
Q