Chapter 3: Getting To Know Your 7535
Monitoring The Battery And Maximizing Run Time
To maximize the run time of your batteries, consider the following:
• The display backlight is the largest drain on the battery. Try to keep its brightness as low as possible.
• The hand-held is ‘event’ driven – that is, when the unit is not in use, it reverts to sleep mode (even when it appears to be running), saving battery power. Events include a key press, touchscreen taps and scan triggers.
Power consumption is reduced if you avoid unnecessary events, and allow the unit to sleep as much as possible.
• The 7535 battery is a ‘smart battery’ with built-in intelligence. The taskbar battery icon is a linear gauge used to estimate the remaining run time of the battery. It is important to note that the battery capacity icon displays quarter percentages of nominal capacity (the capacity of a new battery). An aged battery, even when fully charged, shows somewhat less capacity than nominal.
Double-tapping on the battery icon displays a dialogue box that provides detailed information about the battery status and performance. If the remaining capacity indication seems inaccurate, the battery may need recalibration. Recalibration requires that the battery be fully charged, discharged and then charged again before use. If the battery is fully discharged and
charged on a regular basis, recalibration should not be necessary.
• When the hand-held is switched off, it goes into a low-power, suspend state but continues to draw a small amount of power from the battery. This should not be an issue unless the unit is left in suspend state for more than a week – in this case, the battery should be removed.
• Batteries left for durations of more than one or two months should be fully charged, discharged and then charged again before use. This recalibrates the gas gauge and allows the internal electronics to determine the actual capacity of the battery.
• The hand-held can determine when the useful life of the battery has expired and will notify the user. Chargers may reject batteries that have exceeded their lifespan.
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Chapter 3: Getting To Know Your 7535
Monitoring The Network Connection
3.10 Monitoring The Network Connection
If your hand-held is equipped with a wireless LAN radio, it will typically associate with the nearest access point. The radio signal quality meter in the taskbar indicates the relative strength of the communication link.
To access the radio signal icon from the keyboard:
• Press <BLUE> <0> to display the System Menu .
• Choose System Tray from the menu.
• Use the <LEFT> and <RIGHT> arrow keys to highlight the radio signal icon in the taskbar.
• Press <ENTER> to display the radio quality dialogue box.
If you have a touchscreen:
• Tap on the radio icon in the taskbar to display the radio quality dialogue box.
Note: Moving in and out of the radio coverage area can have varying effects on a network session. At times, you may need to renew your connection by logging in again.
3.11 Uploading Data In A Docking Station
The Combo Docking and Quad Docking peripherals allow the 7535 to link to an
Ethernet network. They are typically used to upload transaction data to a server computer when a radio link in not available. When a 7535 is properly inserted in a docking station, a dock icon is displayed in the taskbar at the bottom of the 7535 screen. The 7535 also detects the presence of the Ethernet network. Review the documentation provided with the user application installed in your 7535 before preforming data uploads.
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Chapter 3: Getting To Know Your 7535
General Maintenance
3.12 General Maintenance
3.12.1 Caring For The Touchscreen
The top of the touchscreen is a thin, flexible polyester plastic sheet with a conductive coating on the inside. The polyester can be permanently damaged by harsh chemicals and is susceptible to abrasions and scratches. Using sharp objects on the touchscreen can scratch or cut the plastic, or crack the internal conductive coating.
The chemicals listed below must not come into contact with the touchscreen:
• mustard,
• sodium hydroxide,
• concentrated caustic solutions,
• benzyl alcohol, and
• concentrated miner acids.
If the touchscreen is used in harsh environments, consider applying a disposable screen protector (PN 1010029). These covers reduce the clarity of the display slightly but will dramatically extend the useful life of the touchscreen. When they become scratched and abraded, they are easily removed and replaced.
Note: If the environment is excessively harsh, consider using a tempered glass version of the 7535.
3.12.2 Cleaning The 7535
Important: Do not immerse the unit in water. Dampen a soft cloth with mild detergent to wipe the unit clean.
• Use only mild detergent or soapy water to clean the hand-held unit.
• Avoid abrasive cleaners, solvents or strong chemicals for cleaning. The
7535 has a plastic case that is susceptible to harsh chemicals. The plastic is partially soluble in oils, mineral spirits and gasoline. The plastic slowly decomposes in strong alkaline solutions.
• To clean ink marks from the keypad and touchscreen, use isopropyl alcohol.
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