Crystal nVision Lab Reference - Manual (Page 5)

Functions  3
nVision Operation Manual
Functions
—
ON/OFF
Power button
Press and hold the
(
power
)
button for 1 second to turn the nVision on or off. The nVision will automatically power down if not used for the time period
defined in CrystalControl.
Automatic Shutoff - Low Power Mode
Adjust your Automatic Shutoff time (shut off time in absence of key press) to optimize battery life. This feature is adjustable from 30
seconds to “always on.” During a recording, the nVision will enter Low Power Mode instead of shutting off.
When powered by USB, the nVision does not employ any power management strategies. Therefore, it will not automatically shut off to the settings defined by
CrystalControl.
During a recording with a Logging Interval of 1 reading/minute or slower, your nVision will enter Ultra-Low Power Mode after the first reading elapses and the
Automatic Shutoff Timer runs out.
The Backlight Shutoff is set separately in CrystalControl. It is unaffected by other settings.
—
MEASUREMENTS & RECORDING
Recording
The nVision can record at rates from 10 readings per second to 1 reading per hour as set in CrystalControl. Adjust your recording rate to optimize battery life
and data recording space.
Your nVision is capable of recording more than 500,000 data points when both module bays are populated. With one bay populated, this
number doubles. CrystalControl will give you a more accurate view of recording times based on the logging rate and enabled screens for your nVision.
When connected to CrystalControl you can configure, control, and graph an nVision recording directly from your PC, without handling the nVision chassis.
To start or stop a recording run from any screen:
1 Press the
(
record
)
button for one second.
Note: You may be prompted to enter a Run Tag, if enabled. For more information, see Run Tags.
2 The red LED will start flashing when the recording begins.
3 To stop recording, press the
(
record
)
button again. The red LED will flash twice.
Note: The nVision records data for all screens enabled in Crystal Control. Even if you are viewing data for the lower module numerical display,
data for the upper module will still record if any of the screens for that module are enabled. Use CrystalControl to check which data screens are enabled.