Omega Vehicle Security OMB-NETSCAN 1500 User Manual Page 189

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Appendix A
API Command Reference
NetScan Users Manual A-49
V
- Set User Terminator
TYPE
System
EXECUTION
Deferred
SYNTAX
Vval
Set the User Terminator value to any character whose numeric value (ASCII
value)
val
is in the range
0
to
255
.
V?
Query the present user terminator value.
DESCRIPTION
The Set User Terminator (
V
) command is used to set the User Terminator value to any character whose numeric
value (ASCII value) is in the range
0
to
255
. The User Terminator may be used by the Set Query Terminator (
Q
)
command to specify a user-defined terminator for any of the defined terminator types or as a reading separator
for the Read Buffered Data (
R
) command.
EXAMPLE
PRINT#1, Q1,0,1,1,1X
Set the reading separator flag ON
PRINT#1, F0,0X
Data format is engineering units, degrees C
PRINT#1, V44X
Set the User Terminator to be a comma (
,
)
PRINT#1,"C1-4,1X"
Configure channels 1 - 4 as T/C type J
PRINT#1,"I00:00:01.0, 00:00:00.1
Configure scan interval
PRINT#1,"Y0,1000,0X"
Configure acquisition counts
PRINT#1,"T1,8,0,0X"
Configure acquisition, start trigger is Trigger On (@)
command, stop trigger is Counts
PRINT#1,"@X"
Trigger the acquisition
PRINT#1,"R1X
Read a Scan
LINE INPUT #1, A$
Retrieve the Scan
PRINT A$
Screen shows
+0020.30, +0023.80,
+0034.90, +0013.50
PRINT#1, V58X
Set the User Terminator to be a colon (
:
)
PRINT#1,"R1X
Read a Scan
LINE INPUT #1, A$
Retrieve the Scan
PRINT A$
Screen shows
+0020.30: +0023.80:
+0034.90: +0013.50
W#
- Set Average Weight
TYPE
System
EXECUTION
Deferred
SYNTAX
W
#
w
t
Specify the number of samples to average in the
Normal mode
, where
wt
is the
average
weight
. Valid options for
wt
are:
1
,
2
,
4
,
8
,
16
,
32
,
64
,
128
, and
256
(with
32
being the default value).
DESCRIPTION
Normal mode
is used for line cycle integration for noise filtering, or for high-speed multiple channel use when
noise is not a problem. The selection for Average Weight (
W#
) determines how many samples to average for
each thermocouple or DC volts channel, or how many samples over which the root mean square (RMS) is
calculated for AC volts. As there are 32 samples per line cycle, setting
wt
to
32
,
64
,
128
, or
256
samples will
automatically enable line cycle noise rejection.
Note: Due to hardware constraints, weights greater than
128
limit the number of channels which can be active
in an acquisition to 122 channels, maximum.
Weight (wt) Maximum # of Channels
1,2,4,8,16,32,
64,
128
128
256
122
EXAMPLE
PRINT#1, M#0X
Select line cycle integration/high-speed multi-channel mode
PRINT#1, W#64X
Select number of samples = 64
PRINT#1, Y0,1,0,0X
Setup to read 10 post trigger scans
PRINT#1, C1-3,1X
Enable channels 1 - 3 for Type J thermocouples
PRINT#1, T1,8,0,0X
Arm the unit
PRINT#1, @X
Trigger unit and collect scans
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