Overview
A synchronized oscillator was added to QUAD_MASTER
model test mass stage (L3). After re-compiling the SUS-ETMY
model there will be two synchronized ossilators in L3 stage that will be used for driving calibration lines: *_L3_CAL_LINE
and *_L3_CAL2_LINE
.
Removed channel LKIN_P_LO
from the list of DQ channels and added L3_CAL2_LINE_OUT
into the list.
The h1susetmy
model must be recompiled in order for the changes to take effect.
Details
For one of the two calibration lines that we needed to run during ER9 we used a pitch dither oscillator, SUS-ETMY_LKIN_P
(see LHO alog 28164). After analyzing the ER9 data we found two problems with this line (see LHO alog 29108):
CAL-CS
model that calculates the time-dependent parameters rely on an oscillator that is synchronized with the ones in the SUS-ETMY
and CAL-PCALY
models. Since SUS-ETMY_LKIN_P
is not a fixed phase (synchronized) oscillator, the phases have to be adjusted by hand every time the oscillator gets restarted. With synchronized oscillators this is will not be necessary.
The second synchronized oscillator was added at L3_CAL2_LINE_OUT
and the list of DQ channels was modified accordingly. The L3_CAL2_LINE_OUT
was added with sampling rate 512 Hz. LKIN_P_LO
was removed from the list of DQ channels.
The changes were commited to USERAPPS repository, rev. 14081.
Dave, TJ, Jeff K, Darkhan,
H1:SUS-ETM(X|Y)
were recompiled and restarted, DAQ was restarted (see LHO alog 29245, WP 6117).
The QUAD MEDM screen was updated to show the new oscillator settings.
The MEDM screen updates were committed to userapps repository (rev. 14088):
common/medm/quad/SUS_CUST_QUAD_ISTAGE_CAL2_LINE.adl
common/medm/quad/SUS_CUST_QUAD_OVERVIEW.adl