Programming Point Scales; Scale Type; Scale Ends; Scale Units - Omega RD8800 User Manual

Chapter 3 Getting Started

3.7 Programming Point Scales

The next exercise is to program the Chart scale assigned to Point 1 in section 3.6.5.
To program the Chart scale:
1. From the Command Button Bar press the PROG button.
2. Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Chart/Pens and then press the ENTER button.
3. Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Scales and then press the ENTER button.
4. You will be asked which scale? to program. Two sets of eight scales are available: set '1' labeled A - H and set
'2' labeled A - H. For this example, Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to specify the scale 1B then press the
ENTER button. You are now presented with the Scales menu which enables you to program the scales.
These options include: Scale type, Scale ends, Scale grid, and Scale units. The following sections cover
some of these options. Refer to Section 5.5.2 for more detailed information.

3.7.1 Scale Type

The Scale type can be programmed linear (LIN) or logarithmic (LOG).
To set the Scale type:
From the Scales menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Scale type and press the ENTER button.
1.
2. For this example, use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight type= LIN to select linear and press the
ENTER button.
3. Press the EXIT button to return back to the Scales menu.

3.7.2 Scale Ends

To set the Scale ends:
From the Scales menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Scale ends and press the ENTER button.
1.
2. You be asked for the number decimal places? (0-5). For this example, use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button
to specify 2 and press the ENTER button.
3. You will be presented with a character keypad and asked for the low scale end value. Assume that you
wish to present the percentage scale from 40 to 80 percent only across the screen effectively expanding
the resolution that you can see. Use the character keypad buttons to enter a low value of 40 and then
press the ENTER button.
4. You will then be asked for a mid-scale value. To keep things linear, use the character keypad buttons to
enter a midpoint value of 60, which is halfway between the 40 and 80 end points chosen to select, then
press the ENTER button.
5. You will then be asked for the high end value. Use the character keypad buttons to enter 80 and then
press the ENTER button to return back to the Scales menu.

3.7.3 Scale Units

The Scale units can be programmed in percent (%) to match the Engineering units programmed in Section 3.6.4.
To set the Scale units:
From the Scales menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Scale units and press the ENTER button.
1.
2. The first page of a multi-page keypad will appear. Press the PAGE button until you see the percent sign
(%) button.
3. Press the % button and then press the ENTER button to return to the Scales menu.
4. Press the EXIT button four times to return to the default display.
You have just programmed Point 1 to be a live input of 0 - 1 volts which will be scaled to an output of 0 - 100% and
you have chosen to display between 40 and 80% full scale on the display, and this is what will be recorded to disk/
card. You can now program the other points in a similar fashion. It is suggested that you fully read the rest of the
chapters of this manual to become familiar with the functions of the various menu options.
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