P.1
Important Cautions
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This is a delicate measuring instrument; please take care not to drop it or subject it to physical shock.
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The impedance bridge of this instrument is immediately inside the antenna connection point. Be absolutely
certain not to apply power from an external transmitter, as this will damage the CAA-500 MarkII.
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Strong local RF fields (in a multi-station environment, for example) may cause unstable SWRreadings.
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When not using Ni-MH batteries, always turn OFF the Charge switch on the battery case. Failure to do so may
result in battery rupture, leakage and/or explosion if you apply charging voltage to alkaline cells.
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The external DCsupply voltage must be between 8V to 16V, and the current supplied must be at least 250mA.
Never apply DC voltages greater than 16V, nor AC voltage of any kind. Our warranty does not cover damage
caused by the use of an improper power source.
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When using AA batteries, the LCD display will become unstable when the batteries are weak. Change Batteries
as soon as the display starts blinking, and change all batteries to improve the battery shelf life.
Remove the batteries when not in use for extended periods of time to avoid damage caused by leakage.
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Before using
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To avoid ESD damage, it is important to discharge any static electricity that
may have accumulated on the antenna system by touching grounding the
antenna’s coax cable connector before screwing it onto the SWR analyzer.
Instruction Manual
Thank you for your purchase of this instrument. It was built under tight quality control
standards and procedures; however, there is always the possibility of damage during
shipping. Should this occur, please notify the dealer from whom you purchased it
immediately so they can initiate the damage claim process with the shipping company.
Please read this manual completely before beginning operation, so as to understand its
features and capabilities fully.
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Features
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Built-in broadband high-stability transmitter for easy measurement of resonant frequency, SWR, and impedance.
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Color LCD & cross-needle meter display provide SWRand Impedance information simultaneously.
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Separate ham band segments can be swept to display the SWR characteristics in the graph automatically.
Moreover, it is possible to plot the SWR characteristics manually with user-defined center frequency and sweep
bandwidth.
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Size AA alkaline (manganese) or Ni-MH rechargeable batteries (six required) may be used. Typical battery life is 9
hours of continuous operation when using AA cells.
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External 8-16V DC power may be used to power the meter; this allows trickle charging of Ni-MH cells.
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The programmable Auto Power Off function preserves battery capacity in case you forget to turn the meter
off.
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A hand strap post is provided, for ease of use and to minimize the chance of dropping the CA-500 MarkII.
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