22 March 2001

# Recap of the DAS/SWSI Working Group Meeting 

The following attended the meeting:

Tom Sardella NASA/583 <tom.sardella@gsfc.nasa.gov> 301 286-7686

Edwin J. Stevens NASA/583 <edwin.j.stevens.1@gsfc.nasa.gov> 301-286-1557

Harshna Sampat CSC <hsampat@csc.com> 301 794-2427

Sergey Nikhinson CSC <sergey@rattler.gsfc.nasa.gov> 301-794-2187

Riley Elwood CSOC/FHA <riley.j.elwood.1@gsfc.nasa.gov> 301-286-6492

Mike Todaro ITT-Seabrook
[mike.todaro@class.gsfc.nasa.gov](mailto:denise.gilliland@gsfc.nasa.gov)
301-809-2249

Caren Corbett NASA <caren.corbett@gsfc.nasa.gov> 505-527-7026

Charlie Hammond ITT-Reston <charlie.hammond@itt.com> 703-438-8016

Ajay Kapoor ITT-Reston <ajay.kapoor@itt.com> 703-438-8085

Haresh Patel ITT-Reston <haresh.patel@itt.com> 703 438-7938

The meeting agenda included:

1.  Review of last meeting minutes

2.  Review of the ICD

3.  Address items related to DAS SWSI interface testing and schedule.

# REVIEW OF THE 03-15-01 MEETING MINUTES

-   The minutes were accepted without any modifications.

## REVIEW OF THE ICD

Entries for table 3.4-5 needs the following modifications:

-   Item \# Item Description Range of Values

-   1 001 -- 999

-   5 Hz and not MHz 2287308500 -- 2287691500

-   7 3 -- 30

-   8 0 -- 100000

-   9 meter\*\*2 to square meters 0 -- 100000

-   10 nnn.nnn.nnn.nnn where nnn is from 0 to 255

-   11 1 -- 65535

-   13 bps and not Kbps 1000 -- 150000

-   17 same as Item 13

-   18 same as Item 10

-   19 same as Item 11

-   21 same as Item 13

-   25 same as Item 13

Remove all the default values from the Range of values field.

Remove the IP address Note 2.

-   Entries for table 3.4-15 need similar modifications as table 3.4-5.

-   Entries for table 3.4-23 need similar modifications as table 3.4-5
    plus one additional correction

    -   Eb/N0 0 -- 99.9

Caren has an action item to find out what happens or should happen to
the UPD message when DAS is in test mode from the LCM and the IBU is set
to Fixed weight mode. (I am not being very clear about this).

Table 3.4-17, add space in the time field (yyyyddd hhmmss).

On page 3-2, add text explaining time fields more clearly (hours range
from 0 to 23, minutes range from 0 to 59, and seconds range from 0 to
59).

Tables 3.4-9, 3.4-14, & 3.4-16, add Harshna's "keyname" and "keyvalue"
comment to text and change the word 'sent' to exchanged between DAS and
SWSI.

Table 3.4-4, the TDRS nomenclature displayed to the customer should be
consistent for SWSI and LCM displays.

Sergey wanted the time representation to be consistent with the XML
schema. Ajay to discuss with Haresh/David and get back with Sergey.

Message 400, only single SIC is enabled/disabled from this message.

# REVIEW OF SWSI DAS OPS CONCEPT PAPER

-   No comments were made specifically on the SWSI DAS Ops Concept.

## 

# DAS/SWSI INTERFACE TESTING

This topic was not discussed at this meeting due to time limitations and
will be picked up at the next working group meeting.

# 

# NEXT MEETING

The next working group meeting will be held by telephone conference on
Thursday, 29th March 2001, at 1pm. ITT will initiate the conference call
to GSFC at 301-286-0254 and to WSC at 505-527-7026.