SPDA Operations
twr23Apr02

The Settings Menu lets you chose your com port and select different
baud rates or exit.

Sampling lets you chose what rate to sample the Analog & Digital
channels.  Max, 0.5 sec, 1 sec or 10 sec.

Outputs lets you chose setting the digital or analog outputs.

The Analog Output control screen permits you to select the output 
channel to set.  The sliders select the voltage in mV.  The slider value
is sent to the D/A output when the Set button is clicked.  The values set
are saved in a array for display while the program is running.  Variables
used during setting are shown as Mval (multiplier value), 
Dval (Digital value), and Vval (Voltage value).  The Done button closes the
control screen.  For measurement of actual output, we suggest using the A/D
input channels to monitor the output channels.

Buttons 0, 1, 2, 3, 4, 5, 6 selects the channels to sample or read.
0 Selects channel 0 and reads it once.
1 Selects channels 0 & 1 and reads them once.
2 Selects channels 0, 1 & 2 and reads them once.
etc...
6 Selects channels 0, 1, 2, 3, 4, 5, 6 and reads them once.

The A/D In button reads the channels selected once for each press.

The D-in button reads the digital inputs once.   Status is shown in
D1 D0 and Dout boxes and lights.

The On/Off button toggles the Digital output on or off depending on the
last state set.

Clicking the Arrow (Play) button starts sampling the Analog channels selected and if
D-On is set (legend will show D-off), the digital inputs are also
sampled.  Most other functions are disabled during sampling.

Click the Square (Stop) button to stop sampling or to change settings.

Status brings up a display screen I used during troubleshooting.
Currently not showing much except last D or A request.

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