Preliminary Technical Data UG-1828
Rev. PrC | Page 203 of 338
Parameter Type Description Default Note
changeModelTapOrders bool Sets “TRUE” to use the model tap orders defined by
“modelOrdersForEachTap”. Set “FALSE” to ignore
“modelOrdersForEachTap” and use the default order.
FALSE The default model tap
order for DPD Model 4 is:
[0] = 0x001F,
[1] = 0x007F,
[2] = 0x001F,
[3] = 0x001E
modelOrdersForEachTap array A bit map for each of the taps in a model to indicate which
power terms are included in the model. Tap 0 and 2
should have the same order.
[0] =
0x001F,
[1] =
0x007F,
[2] =
0x001F,
[3] =
0x001E
The default bit map
represents the default tap
order for Model 4.
preLutScale uint8_t
(U2.2)
Describes the prescaling factor for the LUT. 2.0 Min=1, Max=3.75
clgcEnable bool Enable CLGC functionality. False Set “TRUE” does not start
the CLGC operation. CLGC
starts when the
corresponding tracking
calibration bit is set.
Each of these parameters are described in more details as the following:
enable, clgcEnable
The “enable” parameter is used to place the “DPD Actuator” on the datapath of the specified channel to prepare for DPD operation. The
“clgcEnable” parameter is used to enable CLGC functionality. This could be done through TES under the “Advanced Features” tab as
shown in Figure 188. Note when DPD is enabled, CLGC should also be enabled.
Figure 188. TES Configuration for Placing the DPD Actuator and Enable CLGC Functionality in the Data Path
Note that setting it to be “TRUE” is necessary but not sufficient to start DPD/CLGC operation. The DPD/CLGC starts when the
corresponding tracking calibration bit is also set, as shown in Figure 189.