Programming The Unit For Recording; Setting Which Points To Record; Setting The Record Rate; Setting The Fill Mode - Omega RD8800 User Manual

Chapter 3 Getting Started

3.8.2 Programming the unit for recording

There are a number of parameters that need to be set up before actual recording can take place. These are:
which channels or points to record, at what rate to record them, and how to record them (Fill Mode and Data
Mode). You must also arm the unit to record the actual data.

3.8.2.1 Setting Which Points to Record

To set which points you wish to record:
1. From the Program menu, use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight
Record Setup and then press the ENTER button. This will bring up the
Record Setup menu as shown in Figure 3-12.
2. From the Record Setup menu, use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to
highlight Points and then press the ENTER button.
3. A window pops up and displays point 1=no or point 1=yes. To record this
point press the YES button or to exclude this point press the NO button.
You will automatically move to the next point. You can exit this menu at
any time by pressing the EXIT button, or accept any entry by pressing
then ENTER button.
4. There are fifteen possible points: 1-9 and A-F. For this example, set points
1,2,3 and 4 to YES.
5. Once you are done setting which points to record, press the EXIT button to
return back to the Record Setup menu.

3.8.2.2 Setting the Record Rate

The Record Rate is the rate at which data is recorded to disk. It may be set independently for each
channel or for all channels together. It may be set from a fastest time of eight times per second by setting
the record rate to 0 seconds, or the slowest rate of once every 600 seconds (ten minutes).
To set the Record Rate:
1. From the Record Setup menu use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Record Rate and then
press the ENTER button.
2. Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight All Rates, ignoring Individual Rate and Autorate for
now, and then press the ENTER button. This will set the Record Rate for all channels simultaneously.
3. A numeric keypad will appear and the display will show secs(lo)→ → → → → 1 ← ← ← ← ← for seconds low. Use the
numeric keypad to enter the Record Rate 5 (5 seconds between samples, 0=8 samples/sec) and press
the ENTER button.
4. The display will then show secs(hi)→ → → → → 0 ← ← ← ← ← .for seconds high. Use the numeric keypad to enter the
Record Rate 5 and press the ENTER button.
5. Press the EXIT button to return to the Record Setup menu.
NOTE: For this example, both the high and low Record Rates are set the same. The Record Rate can be
changed by an external event if the Digital I/O option is fitted or by an alarm event.

3.8.2.3 Setting the Fill Mode

There are basically two record Fill Modes: Fill to End or Cycle Data (Cyclic). The Fill to End mode
records data on the disk/card until the disk/card is full and then the recording stops. The Disk Status area
on the Status Bar of the display shows the percentage of disk/card space used. The Cyclic mode records
data on the disk/card in blocks and once the disk/card becomes full, the first block of data recorded is
overwritten by the most current block of data. A block contains approximately 500 samples, thus the 500
oldest samples are replaced with 500 newest samples. This continues to happen until the recording is
stopped by the user. The Recorder recycles the space on the disk/card and can record indefinitely. The
oldest data is always replaced with newest data and you will have a record of the most current data. The
amount of data that will be on the disk/card is calculated as described earlier in Section 3.8.
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Page 3-14
Data on/off
Alarm on/off
Record Modes
Points
Points (Trigger)
Record rate
Disk Full Alarm
Format Disk
Save CFG File
Load CFG File
Filename
Figure 3-12
Record Setup Menu