August 2008
1-8 Installation & Operation
Powering ON and OFF
(cont.)
To turn the PT878 OFF, press the red key and hold it for 3 seconds.
The screen now appears similar to Figure 1-4 below.
Figure 1-4: The Shutdown Menu
Three options are now available:
• Press [F1] to shut down the PT878 - This turns it completely OFF.
• Press [F2] to send the PT878 into sleep mode - In this mode, the
PT878 remains in a standby mode and you can resume taking
measurements immediately by pressing the power button again.
• Press [F3] to cancel the command - This returns the PT878 to
normal operation.
Note: If the PT878 locks up, you can reset it by pressing the power
key (the red key in the upper right corner) and holding it for
15 seconds.
Velocity, ft/s
Signal, dB
Delta-T, ns
Volume, l/s
Resume
SHUTDOWN: Meter OFF
SLEEP: Meter Idle
CANCEL: Resume Operations
Shutdown Sleep
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