Measurement Computing TempScan/1100 - Manual (Page 176)

CV-44 ChartView 988992 Software Reference
This Warning Appears Prior to Enabling the Burst Mode
• The Burst Mode channel will be the only channel enabled in the instrument. This is regardless of the
ON/OFF status indicated on the Channel and Alarm Setup spreadsheet (located on the Setup Channel
Types, Alarms and Acquisition Parameters Window).
• When using Burst Mode, data saved to disk can still be viewed in a view application. However, the
chart setup will only allow you to select the single channel (previously selected in ChartView as the
high-speed Burst Mode channel).
Example: If Channel 4 is selected as the High-Speed Setup Channel (in ChartView’s Acquisition Setup),
and data is acquired and saved to disk, then the only channel that can be selected for chart
display is Channel 4.
• When you switch operation from Burst Mode, back to Normal Mode…
a) channels that were assigned to Charts will automatically re-enable, i.e., returned to an ON state.
b) channels that were not assigned to Charts, but were set to ON prior to selecting Burst Mode, will not
return to the ON state automatically.
c) the channel that was selected for Burst Mode will remain in the ON state, unless turned off by the
user.
Measuring AC Voltage, or AC RMS Voltage
Introduction
When someone talks about measuring AC voltage, they are usually talking about measuring
“AC RMS,” which is the effective periodic value of the voltage for one full cycle. RMS (Root Mean
Square) is the square root of the average of the squares of the signal being measured.
ChartScan, MultiScan and NetScan can use multiple channels to measure AC RMS voltages; but are
restricted to the use of one channel when measure actual AC voltage at 60 cycles. The following
questions and answers should help to clarify this point.
Question 1: Can I measure multiple channels of 60 cycle waveforms with ChartScan, MultiScan, or
NetScan?
Answer: No. Measuring a 60 cycle (or 50 cycle) waveform with ChartScan, MultiScan, or
NetScan requires the use of High-speed, single-channel Burst Mode. While in this
mode, only one channel can be measured. See related questions 2 and 3.