converters and soft start circuits. The SOLSTICE A and B,
TIM and XPS instrument GCI's have completed vibration testing
and electronics have been conformal coated. The SIM GCI
is currently being conformal coated and will be tested toward
the end of December. Door motors will be also be swapped
towards the end of December, and a GIDEP (Government Industry
Data Exchange Program) was issued on the door motor EMI
(Electromagnetic Interference) filters. Fourteen spare filters
were returned to RFI Company for hermetic (sealing) testing.
All fourteen units passed test and will be inserted when
the motor is swapped out. The IM harness has been potted,
wrapped, baked, terminated and kapton taped. The integration
of the harness on the SORCE IM has resulted in excessing
dark counts in the SOLSTICE G tubes. These counts will be
investigated as soon as all harness processes are complete.
All instrument tasks of the SORCE IM Flight Software are
complete through OASIS LPT (Limited Performance Test). MU
(Microprocessor Unit) tasks still remaining include: memory,
patch and scrub pending ongoing integration issues, shell
task module integration test, refinement of logging module,
stress testing and identification of interface problems.
The RAD6000 SUROM (Start-Up Read Only Memory) was received
and tested. It performed well and appears ready for flight.
Work interfaces with Orbital Science Corporation are going
smoothly with the use of the LASP Instrument Simulator.
Ongoing bug fixes and enhancements to the SORCE DSP FSW
(Digital Signal Processor Flight Software) continue.
Integrated Instrument Module
SORCE Spacecraft Bus Status
The OV-4 APE (Attitude Power Electronics) has been reconfigured.
The completed CEU (Central Electronic Unit) new back plane
and ATP (Acceptance Test Procedure) have been completed.
The completed CEU #1 repair has been installed on the spacecraft
bus. The IM heater/thermostat has been installed. FSW (Flight
Software) build 4.0 has been put in the spacecraft and the
FlatSat for the initial bus performance testing. The integration
procedures for the trackers have been completed and the
RWA (Reaction Wheel Assembly), FSS (Fine Sun Sensors), MTB
(Magnetic Torquer Bars) and TAM (Three Axis Magnetometers)
are working. The transceivers have been delivered and the
units were successfully integrated with the RF hybrid. All
RF paths performed nominally during subsequent tests. The
APE flight unit#2 is currently in ATP and has completed
vibe and shock test. Some thermal vac issues have arisen.
Orbital Tranceiver Hybrid Installation
solar array panels have been received and wings are in preoperational
deployment test. The CCS's (Cosine Sun Sensors) have been
repaired and due to initial manufacturing errors and reinstalled.
Meetings: SORCE Scientists and Engineers plan to present
papers and attend the following meetings:
· MIWG, Boulder, CO February 2002
· SORCE Calibration Workshop Gaithersburg, MD February
· NEWRAD at NIST, Gaithersburg, MD delayed to Spring
To submit information please contact: Kathy.Lozier@lasp.colorado.edu