VTI Instruments Corp.
240
EX10xxA/RX1032/EX1044 Function Calls
vtex10xxA_set_fifo_config
F
UNCTION
P
ROTOTYPE
ViStatus vtex10xxA_set_fifo_config(ViSession
vi
, ViBoolean
report_cjc
, ViBoolean
report_timestamp
,
ViBoolean
report_celsius
, ViBoolean
blocking_mode
);
F
UNCTION
P
ARAMETERS
vi
= contains a session handle to the instrument. This handle is obtained by the function and remains valid until the
session is closed.
report_cjc
= a Boolean value indicating whether to report the CJC temperatures in the acquisition data. If set to “0”,
CJC temperatures will not be reported, while setting this parameter to “1” enables reporting.
report_timestamp
= a Boolean value indicating whether to report delta timestamps per channel in the acquisition
data. When this parameter is set to “1”, timestamp reporting is enabled. When set to “0”, it is disabled.
report_celsius
= a Boolean value indicating whether to report the input channel data in units of Celsius (ºC) or
Fahrenheit (ºF). If this parameter is set to “1”, input channel data is reported in °C. If set to “0”, data is reported in
°F
blocking_mode
= a Boolean value that indicates whether blocking mode is enabled. When this parameter is set to
“1”, blocking mode is enabled. When set to “0”, blocking mode is disabled.
D
ATA
I
TEM
R
ESET
V
ALUE
report_cjc
= 0
report_timestamp
= 0
report_celsius
= 1
blocking_mode
= 0
D
ESCRIPTION
This function sets the data format and overflow behavior of the FIFO memory.
The
report_cjc
parameter does not affect the measurement of CJC temperature, but determines if the data will be
displayed. CJC temperatures are measured with every scan, regardless of this setting. Reported CJC temperatures
are always in units of ºC, regardless of the value of the
report_celsius
parameter.
The
report_timestamp
parameter represents the time, in increments of 100 ns, between the specific channel
measurement and the scan initiation time.
The
blocking_mode
parameter sets defines the action taken if the reading buffer fills to its maximum capacity
during scanning. When this mode is enabled, additional readings are discarded leaving the contents of the buffer
intact. With blocking mode disabled, the buffer becomes circular, in that additional readings overwrite the oldest
readings.
NOTE
Regardless of the settings of the
report_cjc
and
report_timestamp
parameters, the CJC
temperature and delta timestamp information is not accessible through the vtex10xxA_read_fifo
function. They are available through the streaming interface and the parameter settings apply for it.
E
XAMPLE
Содержание EX1000A
Страница 25: ...www vtiinstruments com EX10xxA Introduction 25 FIGURE 1 2 RACKMOUNT HARDWARE INSTALLATION DIAGRAM ...
Страница 27: ...www vtiinstruments com EX10xxA Introduction 27 FIGURE 1 4 ISOMETRIC AND INTERNAL CJC PLATE DIAGRAM ...
Страница 28: ...VTI Instruments Corp 28 EX10xxA Introduction EX1044 DIAGRAM ...
Страница 29: ...www vtiinstruments com EX10xxA Introduction 29 FIGURE 1 5 EX1044 TABLE TOP USAGE ...
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