TOC

CV4400 ASR-9 ARTCC Converter, ASR-9 Formatter

The CV4400 converts ASR-9 into CD format data.

CV4400 formats

CD2 full-scan,
All ASR-9 native ASTRIX data is converted to CD format and provided at full ASR-9 scan rate.

CD2 skip-scan,
All ASR-9 native ASTRIX data is converted to CD format and provided at 1/2 ASR-9 scan rate by "skipping a scan"

CD–ASR

from FAA network you can get the user guide for ECG here; ​http://trac.tgf.tc.faa.gov/projects/tgf/attachment/wiki/EcgDocs/TI_6100.16A-ECG_UserManual20120302.pdf

To address the incompatibilities between short-range radar and enroute surveillance data processing, and
to address usability of CV4400 format converter output data with DARC, the conversion function formally
done by CV4400 hardware is now a software function within ECG.

...

This excerpt references a HOST/DARC configuration for ECG

1. If a site utilizes a CV4400 converter, that converter is reprogrammed to provide CD2 full-scan data to ECG. The PIP then converts that data to CD2 skip-scan data for use by HCS. The BIP, however,
does not need to do any conversion since DARC can utilize CD2 full-scan data. Refer to Figure 3–302, CV4400 Conversion Enabled in PIP and Disabled in BIP (with CV4400 Hardware).

RADAR sepadapt entry from c140un0

 <CDRADAR
            DEVICE_NAME="PHL-3"
            LDA1="0x17A"
            PROCESSOR="zcyappipa"
            SLOT="3"
            PORT="1"
            RADAR_CHANNEL="3"
            RADAR_ID="11"
            SITE_NAME="PHL"
            RADAR_TCP="YES"
            INVERT="NORMAL"
            MULTICAST="DISABLED"
            PROTOCOL="ASR9_RADAR">
        </CDRADAR>

{{{
   <Site
            SITE_NAME="PHL"
            RADAR_ID="11"
            CV4400="ENABLED"
            CV4400_RADAR_ID="11"
            CV4400_SCAN_TIME="4618"
            CV4400_TO_LAN="ENABLED">
        </Site>
}}}

PROTOCOL="ASR9_RADAR"

 ASR9_RADAR (ASR-9)
This is selected when the incoming data is from an ASR–9 short range radar that is delivering
CD–ASR format data to ECG. This protocol would typically only be selected when the ASR–9 radar
does not have CV4400 hardware filtering/formatting equipment (as with new ASR–9 radars).

MULTICAST="DISABLED"

With ECG/DARC, this parameter is used to enable or disable the multicasting of radar data before the
data is processed by the CV4400 filtering/formatting function in ECG (RAPPI and DARC are multicast
users). If it is desired to multicast radar data to RAPPI and DARC prior to it being processed by the ECG
CV4400 filter, then the multicast parameter should be set to ENABLED for each radar device for which
multicast is desired. The default for multicast for the radar device is DISABLED.

INVERT="NORMAL"

This parameter is set according to the compatibility of the incoming data signal relative to MIL-STD-188.
If invert is set to INVERTED, then ECG software inverts the polarity, treating an incoming 0 (zero) as
a logical 1 (one) and a 1 (one) as a logical 0 (zero). If INVERT is set to NORMAL, then no inversion
is performed. The default ECG SCT setting is INVERTED. This parameter is set in the device details
window of the SCT.
Note:
This parameter may not need to be set to NORMAL for short range (ASR) radars that do not
send data in conformance with MIL-STD-188.