LEAD

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue
DSP Error~ 1 / dayThere are ~600 Microprocessors on board AMS 300 of which are active, called 'DSP's or Digital Signal Processors. These processors have on board RAM (Random Access Memory) which may be corrupted by a passing particle. The DSP test is a test which verifies that a DSP's memory is unmodified. If a modification is detected, the DSP is said to have failed the test. The DSP can then be rebooted to clear the memory and return the DSP to a clean state. This process is now automated for most DSP errors.
HRDL Rate Change~ 1 / weekHRDL stands for 'High Rate Data Link' The HRDL rate is the rate at which data is being sent to the ground. It will change depending on NASA and our needs.
Unexpected KU Outage~ 3 / weekSometimes the Comm Schedule given to us by NASA is out of date. It can be for various reasons, such as a change in the ISS trajectory, or thermal conditions causing the pieces of the ISS to be placed in non-predicted positions. When the Schedule is wrong, the KU band and end 'unexpectedly' Causing data to be lost to space. This data is also played to the laptop and so the data is saved to be later played back.
No Commanding, POIC Maintenance1 / monthEvery month or so there is a maintenance which causes all payloads on the ISS to lose commanding capabilities for a short time, usually a couple of hours.

DATA

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue
Laptop Uplink File1 / weekOnce a week, a file is uplinked to the laptop. It usually contains nothing important, but this is the method that new JAP versions reach JMDC. The file is first placed in PIMS, then PRO uplinks the file to the ER6, and then the Laptop takes the file from ER6. At the meeting the procedure may be reported completed, or at some stage of completion.
Laptop Downlink File2 / weekTwice a week, a file containing logs form the Laptop is downlinked. The file is first transferred to the ER6, then PRO downlinks the file and places it into PIMS, and then we take the file from PIMS and unpack it.
Laptop File Finding2 / weekTwice a week, The laptop is searched for files which are missing on the ground. The files intervals which need to be played back are reported.
Laptop Playback1 / weekOnce per week, the files which have been found to be needed to be transferred again to the ground are played back. AMS and AMS Laptop are placed into Configuration F or G for the playback, and then returned to Configuration A after it is complete. Configurations describe how AMS and the AMS Laptop are connected to eachother.

SOC

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

Thermal

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

Tracker

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

TRD

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

ACC

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

TOF

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

RICH

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue

ECAL

How the Issue Appears at the 5pmFrequency of AppearanceDescription of Issue
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Topic revision: r3 - 2014-02-28 - ValeryZhukov
 
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