Trigger System Commands; Debugging Commands; Arm; Scptrigen - HP E1313A Manual

Trigger System Commands

Debugging Commands

Appendix D
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ARM < custom >
This command causes the DSP to load its run-time code into fast RAM, and
pre-settle the first channel of the scan list designated in the " Next List"
field of the Scan Control Register. The processor then enters the " Armed"
state, and indicates that it is ready to accept a scan trigger by asserting the
" Armed" bit in the Scan Status Register. The <custom> parameter should
normally contain zero. If
Processor will load 2k of user code from location 0C00
RAM in place of the normal run-time routine.
enable
SCPTRIGEN <
When < enable > is one (1), SCP triggers are enabled. When zero (0),
SCP triggers are disabled.
count
TRIGCOUNT < >
Sets the number of trigger events that will be accepted. The value of
count can be 0 to 65535. The default value is 1. Setting
< >
to 0 allows unlimited trigger events to be accepted.
channel
AVERAGE <
m
Takes 2 readings (1<m<16) on the specified channel and range, and
returns the mean value, and mean-squared value as IEEE floating point
numbers in the FIFO buffer.
indicates the highest range. The mean is returned first. No conversions are
supported: the results are in raw volts, and volts
junction compensation is not used, and the Current Value Table is
unaffected. If < m > is greater than 7, the readings are taken over an even
number of line cycles at 50 and 60 Hz, e.g.
spaced over .1 second. The mean-squared value is intended to be used to
calculate the rms noise on a channel as follows:
√   
(mean squared value)−( mean value)
rms noise=
Due to fixed-point arithmetic limits, overflow may occur while
accumulating the mean-squared value when
" very large number" is returned. Autoranging is supported by
< custom > is set to a value of one, the Control
>
range m
> < > < >
range is an integer from -1 to 4, where 4
< >
2
respectively. Reference
< m > = 8 yields 256 samples
2
< m > is large. In these cases, a
Register-Based Programming
0400
16
in its Data Space
16
0860
16
2330
16
count
< >
0480
16

AVERAGE

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