PROCEDURE:  dpaa_off.ps rev 2.0

61035.1   OVERVIEW  

This is an "atomic" procedure which simply powers off DPA A OFF .

61035.2   SUPPORT SUMMARY  

SUMMARY

Disable and turn off DPA  A

CONSTRAINTS

FEPs 0, 1 and 2 are off

INITIAL CONDITIONS

Assumes that the PSMC has power from the spacecraft

      A.  Set the following command system configuration parameters:

Clear To Send Mechanism

=  FSV

CAR Processing

=  Enabled

FSV Processing

=  Enabled

CRR Processing

=  Disabled

Output Format

=  NRZM

Minimum Time Delay (sec)

=  3

CAR Time-out (sec)

=  40

FSV Time-out (sec)

=  45

Blocking Factor

=  90

Burst Factor

=  1

61035.4   TURN OFF DPA A     {1.0}

A. SOT authorizes OC to start script I_1_DPAA_OFF.
B. OC may resume past initial wait.

      Script uplinks command
      1DPPSAOF        {1.1}

      Script uplinks command
      1DPPSADS        {1.2}
                                 [Disable DPA A]

C. OC informs SOT that script has completed.
D. Verify telemetry:

Description

MSID

Value

Script Verification

DPA Input V

1DP28AVO

28.0 - 34.0

N

DPA Input I

1DPICACU

0.0

N

DPA +5 V

1DPP0AVO

0.0

N

END OF PROCEDURE