OptiView Batteries and Power

  1. Batteries and Battery Life
  2. Normal Operation versus Standby
  3. Power Level Indicators
  4. Charging and Discharging
  5. Troubleshooting

Batteries and Battery Life
The OptiView Integrated Network Analyzer model is manufactured with an internal lithium-ion (Li-Ion) battery. This battery will power the instrument for approximately 1-hour under normal use conditions.
 
An additional external Li-Ion battery is provided which extends operation for up to 2.5 hours under normal use conditions. If extended mobile testing is anticipated, then multiple external batteries may be used to rotate between charging and installed on the OptiView to provide nearly indefinite uninterrupted battery powered use. External batteries may be removed or installed while OptiView is testing without interruption to the testing process.
 
Li-Ion batteries reportedly do no have the battery memory problem inherent to Nickel-Cadmium (NiCad) batteries. However, all batteries are affected by heat. Avoid charging the battery if OptiView or the external battery-pack is hot.

Normal Operation versus Standby
OptiView has three activity modes: shutdown, standby, and operating. 

Operating Mode
The operating state will be up to either 1 hour or 3.5 hours depending on the presence of the external battery pack.
 
Standby low power suspend to RAM
OptiView enters a suspend to RAM standby state when the green power button is pressed briefly (less than 7 seconds). OptiView will enter a low power standby mode and remain in that state for up to five hours. During the low power standby state the user may press the green power button briefly at any time and OptiView will resume operations in approximately 15 seconds (statistics and other real-time measurement information will be reset).
 
Standby very low power suspend to disk
After five hours of suspend to RAM standby, OptiView will briefly power up in order to enter a lower power suspend to disk standby state. Relying exclusively on the internal battery, OptiView can maintain suspend to disk standby for up to one week, and longer if the external battery is attached. The user may press the green power button briefly at any time and OptiView will resume operations from suspend to disk standby in approximately 50 seconds (statistics and other real-time measurement information will be reset). 

Note: Windows 98 does not always restore properly from a standby state. If OptiView does not resume normal operations within the expected 15 seconds or 50 seconds (depending on which standby state it is in), the most common symptom is a blinking cursor in the upper left corner. Press the recessed round Reset button found under bail on the right side to issue the equivalent of a warm boot to Windows. While in this state, the measurement board is active and may be accessed using the Remote User Interface. 

Shutdown
To completely turn OptiView off, use the Windows 98 Start | Shutdown command sequence. If OptiView will be left unused for extended periods of time it is recommended that the ac adapter be connected to maintain the battery in the fully charged state.

Power level indicators
Both OptiView itself and the external battery have power level indicators. The OptiView user interface power level indicator is accessed by pressing the battery icon on the Windows 98 toolbar at the bottom of the display.


 or  



The internal and external batteries are each shown separately with an estimate of remaining power. In this example the external battery is not installed. 


 
The external battery power level indicator is found on the underside of the battery pack. This indicator is not exposed when the battery is attached to OptiView. 

 

Press the "Press" on the label to cause the battery pack to illuminate between one and five LEDs which indicate the remaining power level in the battery pack.
 
The power level indicators depend upon power monitoring circuitry built into the charging circuits. These indicators operate by referencing the current power level against the measured discharged state. If the power level indicator does not appear to be accurate, then completely discharge the battery (internal or external) to reset the referenced discharged state measurement. Power level indications should become accurate again after a full discharge/recharge cycle. 
 
Charging and discharging
Both OptiView and the external battery pack each have built-in charging circuits. To charge either, the ac adapter may be attached at any time. If the external battery pack is attached to the OptiView then both the internal and external batteries will be charged.
 
OptiView employs an intelligent charging and discharging circuit. The removable external battery is always used (discharged) prior to use of the internal battery. Similarly, the internal battery is always charged before the external battery. This intelligent battery use design is intended to permit external batteries to be depleted and replaced without disrupting testing, and is intended to preserve the internal battery charge as long as possible.
 
Both charging circuits (internal and in the battery pack) have protection circuitry which prevents overcharging. After the battery reaches a fully charged state the charging circuit cuts back to a trickle charge state which may continue indefinitely without damage to the batteries.
 
The charging circuit was also designed with the transient mobile nature of troubleshooting in mind. The ac adapter may be attached or removed at any time, whether the instrument is active, in standby, or turned off. The charging circuit will evaluate battery power levels in one or both batteries and either provide full charge or trickle charge power as appropriate without disrupting the OptiView operational state.
 
While the ac adapter is connected, the charge status LED on the instrument or external battery pack will reflect the current charging condition: 

LED off ac adapter not connected, or no power is reaching the circuit
LED flashing the charging circuit is in full power charge mode
LED on solid the charging circuit is in trickle charge mode 

It takes approximately 5 hours to charge either the internal battery or the external battery pack from a fully-discharged state. If the ac adapter is connected while OptiView is turned on then it will take longer to recharge either or both batteries. Similarly, if OptiView is turned on while charging takes place it will take longer to recharge because the charging circuit is also providing operating power.
 
If both batteries are fully discharged they may both be recharged faster by disconnecting the external battery pack and charging the battery pack and the internal battery separately, each with its own ac adapter. Remember, the external battery pack will not begin charging until the internal battery is fully charged.

Note: To properly condition the battery(s), a new OptiView must be initially charged for 8 hours before use. 
  
Troubleshooting
OptiView is designed to operate in a rapid on/off environment. Shutting down OptiView will not disrupt the instrument, even though the OptiView application was still running when it shut down. This is not true of any user-installed utilities or applications running in Windows 98. 

OptiView User Interface is "Hung"
If OptiView is in an apparently hung state, try pressing the recessed round Reset button located under the bail on the right side. The Reset button provides the equivalent of a warm boot to Windows.
 
If that does not recover normal operation, the instrument may be forced into a power off state by holding the green power button down for at least 7 seconds. This is a hardware based shutdown, and does not depend on the state of the software or microprocessor. This is not the recommended method of shutting down the analyzer. To properly shutdown the analyzer, from the Windows desktop, select Start | Shut Down... | Shut down.
 
User installed application device drivers may interfere with standby, and may cause the user interface to hang when it resumes after suspend. They may also prevent the user interface from suspending.
 
OptiView User Interface does nothing at all
If the analyzer is left in standby for an extended period of time (weeks), and the analyzer does not come out of standby by pressing the On/Off button, both the internal and external batteries are probably fully discharged. Attach the supplied AC adapter/charger to allow the analyzer to power-up.  

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Author:neal
Creation Date:3/18/2004
Last Modified:5/23/2012