USB-5PSMBUS-CABLEZ Analog Devices Inc, USB-5PSMBUS-CABLEZ Datasheet - Page 13

• Manufacturer Part Number: USB-5PSMBUS-CABLEZ
• Description: 5-pin 1USB SMBUS CABLE(ROHS)
• Manufacturer: Analog Devices Inc

Specifications of USB-5PSMBUS-CABLEZ

• Accessory Type: SMBus Cable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ARM7TDMI™
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REAL-TIME GRAPHS OF VOLTAGE, CURRENT, AND POWER
The tabs located on the top of the user interface allow you to
switch between the Main Panel and the voltage, current, and
power graphs.
You can monitor the data using the software generated graphs.
There are three control panels and three graphs corresponding
to voltage, current, and power. Voltage and current graphs are
displayed using actual voltage and current data from the device.
The values for the power graph are calculated using, P = V × I.
Note that the Readback update rate, on the Main Panel,
sets the speed at which the ADC samples are taken and,
consequently, the speed at which the graphs update.
The digitized values for voltage, current, and power are
displayed in the control panel on the left where different traces
are identified by different colors (see Figure 33 and Figure 34).
Using the scale adjustment bar shown in Figure 35, you can
adjust the y-axis scale of the plots to optimize them.
Figure 33. Voltage, Current, and Power Plots
Figure 35. Scale Adjustment Bar
Figure 32. Panel Selection Tabs
Figure 34. Trace Identifier
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EVAL-ADM1175/ADM1176/ADM1177/ADM1178
On the top right corner, the Pulse button allows you to pulse
the graph from real-time plotting. There is also a Scope Chart
selection drop-down menu that allows you to choose from one
of the three graph formats. The graph formats are: Strip Chart,
Scope Chart, and Sweep Chat. The default mode is Scope Chart.
The screen shot in Figure 37 shows the result of varying the supply
voltage. Notice that the power graph also changes as a result.
The screen shot in Figure 38 shows that the supply voltage
is constant but that the current is changing, as a result of
varying the load resistance by turning Switch VR1. Turning
VR1 clockwise reduces the load resistance, and hence the
current increases. Turning VR1 counterclockwise increases
the load resistance, and hence the current decreases. Notice
the variation of the power graph as the current graph changes.
Also note that once the current limit is reached, the FET is shut
down and no current flows through.
Figure 36. Pulse Graph Button and Scope Type Selection Menu
Figure 37. Plot with Voltage Variation
Figure 38. Plot with Current Variation