How to writing the data into the file at the same frequency of data acquisition using myRIO

Hi everyone,
I have a question regarding data acquisition fequency and data recording frequency of myRIO. Hope you guys can help me out.
Basically, I want to acquire voltage input at analog input 0 at the frequency of 1kHz and then write the data into a file (tdms format).
However, I always found there were only 55 or 56 data points recorded every second in the data file (see the excel sheet).
To confirm my data acquisition was performed at the correct frequency, I added a small function in the main loop to indicate the time spent between two acquisition events.
To my surprise, the period of data acquistion is correct (1ms or 1kHz) but there are only 55 or 56 data point per second recorded in the data file.
How can I record every data point acquired by the analog input?
Thank you!
P.S. I am very new to myRIO. How can I manually set the system time for myRIO? The default time of my myRIO is wrong.
Best,
Tengyang
Attachments:
test result.xlsx ‏16 KB
Main with timed loop.vi ‏122 KB
test result.xlsx ‏16 KB

Have a look at the Jakarta POI project, they have a Java API for creating Word documents.
http://jakarta.apache.org/poi/hwpf/index.html

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DATA: it_stack2 TYPE t_stack2 WITH HEADER LINE.
***ALV Customer Wrapper
DATA: it_stack3 TYPE t_stack3 WITH HEADER LINE.
CONSTANTS: BEGIN OF c_con_listtype,
simple(1)    TYPE c VALUE 'S',
hier_sequ(1) TYPE c VALUE 'H',
matrix(1)    TYPE c VALUE 'M',
END OF c_con_listtype.
DATA:   gv_callback_program1      TYPE sy-repid,
gv_callback_user_command1 TYPE kkblo_formname,
gv_callback_top_of_page1 TYPE kkblo_formname,
gv_callback_top_of_list1 TYPE kkblo_formname,
gv_callback_end_of_page1 TYPE kkblo_formname,
gv_callback_end_of_list1   TYPE kkblo_formname,
gv_callback_pf_status_set1 TYPE kkblo_formname,
gv_callback_layout_save1    TYPE kkblo_formname,
gv_callback_fieldcat_save1 TYPE kkblo_formname,
gv_callback_grouplevel_change1 TYPE kkblo_formname,
gv_callback_before_line_otput1 TYPE kkblo_formname,
gv_callback_after_line_otput1 TYPE kkblo_formname,
gv_callback_foreign_top_of_pg1 TYPE kkblo_formname,
gv_callback_foreign_end_of_pg1 TYPE kkblo_formname,
gv_callback_list_modify1          TYPE kkblo_formname,
gv_callback_top_of_coverpge1     TYPE kkblo_formname,
gv_callback_end_of_coverpge1     TYPE kkblo_formname,
gv_callback_item_data_expand1     TYPE kkblo_formname,
gv_callback_header_transport1     TYPE kkblo_formname,
gv_callback_reprep_sel_modify1    TYPE kkblo_formname,
gv_callback_subtotal_text1       TYPE kkblo_formname,
gv_layout1   TYPE kkblo_layout,
gv_fieldcat1 TYPE kkblo_t_fieldcat,
gv_fctype1 TYPE c,
gv_event_exit1 TYPE kkblo_t_event_exit,
gv_excluding1   TYPE kkblo_t_extab,
gv_special_groups1 TYPE kkblo_t_sp_group,
gv_sort1 TYPE kkblo_t_sortinfo,
gv_filter1 TYPE kkblo_t_filter,
gv_except_qinfo1 TYPE slis_t_qinfo_alv,
gv_sel_hide1 TYPE slis_sel_hide_alv,
gv_reprep_id1   TYPE slis_reprep_id,
gv_screen_start_column1 TYPE i,
gv_salv_adapter1   TYPE REF TO if_salv_adapter,
gv_suppress_empty_data1 TYPE sap_bool.
FUNCTION z_excel_download_test.
*"*"Local Interface:
*" IMPORTING
*"     REFERENCE(I_BYPASSING_BUFFER) TYPE CHAR01 OPTIONAL
*"     REFERENCE(I_BUFFER_ACTIVE) OPTIONAL
*"     REFERENCE(I_CALLBACK_PROGRAM) TYPE SY-REPID OPTIONAL
*"     REFERENCE(I_CALLBACK_USER_COMMAND) OPTIONAL
*"     REFERENCE(I_CALLBACK_TOP_OF_PAGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_TOP_OF_LIST) OPTIONAL
*"     REFERENCE(I_CALLBACK_END_OF_PAGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_END_OF_LIST) OPTIONAL
*"     REFERENCE(I_CALLBACK_PF_STATUS_SET) OPTIONAL
*"     REFERENCE(I_CALLBACK_LAYOUT_SAVE) OPTIONAL
*"     REFERENCE(I_CALLBACK_FIELDCAT_SAVE) OPTIONAL
*"     REFERENCE(I_CALLBACK_GROUPLEVEL_CHANGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_BEFORE_LINE_OUTPUT) OPTIONAL
*"     REFERENCE(I_CALLBACK_AFTER_LINE_OUTPUT) OPTIONAL
*"     REFERENCE(I_CALLBACK_FOREIGN_TOP_OF_PAGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_FOREIGN_END_OF_PAGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_LIST_MODIFY) OPTIONAL
*"     REFERENCE(I_CALLBACK_TOP_OF_COVERPAGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_ITEM_DATA_EXPAND) OPTIONAL
*"     REFERENCE(I_CALLBACK_END_OF_COVERPAGE) OPTIONAL
*"     REFERENCE(I_CALLBACK_HEADER_TRANSPORT) OPTIONAL
*"     REFERENCE(I_CALLBACK_REPREP_SEL_MODIFY) OPTIONAL
*"     REFERENCE(I_CALLBACK_SUBTOTAL_TEXT) OPTIONAL
*"     REFERENCE(I_TABNAME) TYPE SLIS_TABNAME OPTIONAL
*"     REFERENCE(I_FCTYPE) DEFAULT 'R'
*"     REFERENCE(IT_EXCEPT_QINFO) TYPE SLIS_T_QINFO_ALV OPTIONAL
*"     REFERENCE(IS_SEL_HIDE) TYPE SLIS_SEL_HIDE_ALV OPTIONAL
*"     REFERENCE(IS_REPREP_ID) TYPE SLIS_REPREP_ID OPTIONAL
*"     REFERENCE(I_SCREEN_START_COLUMN) DEFAULT 0
*"     REFERENCE(I_OO_ALV) OPTIONAL
*"     REFERENCE(IR_SALV_ADAPTER) TYPE REF TO IF_SALV_ADAPTER OPTIONAL
*"     REFERENCE(I_SUPPRESS_EMPTY_DATA) TYPE SAP_BOOL DEFAULT
*"       ABAP_FALSE
*"     REFERENCE(I_FILE) TYPE STRING OPTIONAL
*"     REFERENCE(IT_FIELDCAT) TYPE SLIS_T_FIELDCAT_ALV OPTIONAL
*"     REFERENCE(IS_LAYOUT) TYPE SLIS_LAYOUT_ALV OPTIONAL
*"     REFERENCE(IT_SORT) TYPE SLIS_T_SORTINFO_ALV OPTIONAL
*"     REFERENCE(IT_FILTER) TYPE SLIS_T_FILTER_ALV OPTIONAL
*"     REFERENCE(IT_EXCLUDING) TYPE SLIS_T_EXTAB OPTIONAL
*"     REFERENCE(IT_SPECIAL_GROUPS) TYPE SLIS_T_SP_GROUP_ALV OPTIONAL
*"     REFERENCE(IS_KEYINFO) TYPE SLIS_KEYINFO_ALV OPTIONAL
*"     REFERENCE(IT_EVENT_EXIT) TYPE SLIS_T_EVENT_EXIT OPTIONAL
*"     REFERENCE(IS_LIST_SCROLL) TYPE SLIS_LIST_SCROLL OPTIONAL
*"     REFERENCE(IS_PRINT) TYPE SLIS_PRINT_ALV OPTIONAL
*"     REFERENCE(IS_LINEINFO) TYPE SLIS_LINEINFO OPTIONAL
*"     REFERENCE(I_REPID) TYPE SYREPID OPTIONAL
*" TABLES
*"      T_OUTTAB TYPE STANDARD TABLE OPTIONAL
*********** Local data declarations******************
DATA: gv_list TYPE char1.
DATA: gv_fcat_complete TYPE sap_bool.
DATA: gv_buffer_active TYPE char01,
wa_variant TYPE disvariant.
DATA: gv_controller TYPE REF TO cl_salv_export_c8r.
DATA: gv_xml           TYPE xstring.
DATA: gv_s_xml_choice TYPE if_salv_bs_xml=>s_type_xml_choice.
DATA: gv_t_xml_choice TYPE if_salv_bs_xml=>t_type_xml_choice.
DATA: gv_param_lvc TYPE if_salv_export=>s_type_param_lvc.
DATA: gv_data       TYPE REF TO data.
DATA: gv_result_data TYPE REF TO cl_salv_ex_result_data_table.
DATA: gv_flavour TYPE string.
DATA: gv_version TYPE string.
DATA:

Does SSIS guarantee that it loads the data into SQL Server in the same order as it is in Excel

Hi,
We are trying to load several Excel files into SQL Server SSIS and we need to save the data in the database in the same order as it is in Excel..
My question is, Does SSIS guarantee that it loads the data into SQL Server in the same order as it is in Excel. If so, we will add a sequence to ensure we have the order.
Please advise.
Thanks & Regards,
Dhanumjay

Thanks for your response.
If it is one file then we can add an index column, but we have to load hundreds of files.
How adding an index/key column to the table works unless SSIS picks and loads the data in the table in the same order as it is in Excel?
Just to explain my question better,
If excel has three rows {a,b},{c,d},{e,f}, does SSIS ensure it loads the data in the same order in a table.
Thanks.

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