Adtec digital EN-20 (version 2.03.06) Manual - Manual (Page 16)

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. Annex A
Annex B *.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
2-133 *.ECMD0 QAM
UPCON_CHANNEL_NUM
UpConversion
Power RF output power in dBmV 45 dBmv
to 61
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
America) channel plan will return a
value of ( -1 ) in the channel field,
however, the RF output frequency
will be as entered. Valid range of
frequencies is 50 to 862MHz
inclusive. 50 to 862
MHz *.ECMD0 QAM
UPCON_OUTPUT_FREQ
Note: If using API Commands, you must specify which encoder the command applies to by
substituting '0' (for Encoder 1) or '1' (for Encoder 2) in place of the '#' symbol in the
commands above. For more information, see the "API Commands" article in this manual.
QAM Configurations are global configurations that will automatically be applied when
configuration is sent to either encoder.