Conserving power
Trimble recommends that you do the following to reduce power consumption:
l
Set the handheld to automatically turn off when idle. For more information, see Turning on and
turning off the handheld, page 19.
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Set the backlight to automatically turn off when the handheld is idle for a specified time. For more
information, see Backlight and Brightness, page 34.
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Reduce the brightness setting for the backlight. For more information, see Backlight and Brightness,
page 34.
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Turn off the integrated Bluetooth and Wi-Fi radios, and the Juno 5D handheld's cellular modem,
whenever you are not using them. For more information, see Turning on and turning off the
integrated radios, page 43.
Note – Do not disconnect from GNSS if you will be reconnecting within about five minutes. A GNSS
application can take up to 30seconds to reactivate the integrated GNSS receiver, so disconnecting to
save power can cost time.
Turning on and turning off the handheld
If the screen on the handheld is blank, the handheld is in Suspend mode or has been shut down. To turn
on the handheld, press the Power button until the screen lights up.
To put the handheld into Suspend mode, press the Power button briefly. The handheld is placed in a
very low power state, but the Bluetooth and wireless cellular modem radios may remain active.
To completely shut down the handheld, press and hold the Power button until the Power Menu
appears, and then tap Shutdown. All running applications are shut down, and the handheld is
completely turned off.
Suspend mode
When you press the Power button briefly to turn off the handheld, the handheld goes into Suspend
mode. This is a low-power mode that maintains the main memory contents and keeps applications
running but does not allow you to operate any of the handheld’s functions. The handheld appears to be
turned off. The integrated GNSS receiver is turned off and any application using GNSS is disconnected.
If the Bluetooth and wireless cellular modem radios were on, they will remain turned on. The handheld is
capable of receiving data via Bluetooth or the cellular modem radio while it is in Suspend mode. The
handheld is able to automatically wake up to calendar alarms if it is in Suspend mode.
CAUTION - To save battery power, use the Wireless Manager to turn off the wireless radios before you place the
handheld into Suspend mode.
To turn on the handheld when it is in Suspend mode, press the Power button briefly until the screen
lights up. The handheld is immediately ready for operation. There may be a delay of up to 30seconds
while the integrated GNSS receiver automatically reactivates.
The handheld may go into Suspend mode automatically if you dismiss two consecutive low battery
alerts. Charge the battery before you resume work.
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