2-port vector network analyzer ARINST VNA-PR1
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11. CARE AND MAINTENANCE
11.1. General care of the device
11.1.1. Technical service consists in keeping the device in working condition, regular carrying out pre-
ventive work.
11.1.2. The connectors of the test ports are wiped with a soft cloth or a brush dipped in rectified ethyl
alcohol, preventing alcohol from getting on the surfaces of dielectrics.
11.1.3. The case of the device is cleaned from contamination with a soft cloth moistened with soapy
water or wet household wipes. The penetration of liquids into the device case is not allowed!
Do not use alcohol-based or petroleum-based solvents to clean the screen and the device
case! These liquids can damage the outer coating of the screen and the product case.
11.2. Battery charging
11.2.1. To charge the battery, we recommend using a stable power supply with an output voltage of 5V
and a current of at least 1000 mA.
The device has an intelligent system for determining the maximum charging current depending on the
available power source. When the charger is connected, the maximum charging current is automatically
detected. To reduce the charging time of the built-in battery, it is recommended to use industrial power
supplies (chargers) with a maximum output current of 3 A.
11.2.2. Connect the USB cable supplied with the Mini-USB connector of the device (9) with the USB
connector of the power supply or the USB port of the PC.
11.2.3. The
CHARGE
indicator (8) informs you about the battery charging process. The battery charg-
ing process will take about 3.5 hours. When charging is complete, the
CHARGE
indicator (8) turns off.
The device is allowed to operate while the battery is charging, provided that the power supply is capa-
ble of providing an output current of at least 1500 mA. If the charger or USB port of the PC is not able to
provide the required current for the device to operate and charge the battery, the device will automatically
lower the current consumption until the battery is completely stopped.
11.3. Battery replacement
11.3.1. After a certain period of time, the capacity of the Li-Ion battery decreases, and long-term use of
the device without recharging becomes difficult.
11.3.2. Battery replacement is necessary if:
the battery charges very quickly and discharges very quickly;
the battery takes a very long time to charge (more than 10 hours);
the battery does not take charge;
the device does not turn on in offline mode (with the charger cord disconnected).
11.3.3. To replace it, you need to purchase a new Li-Ion battery with an operating voltage of 3.7 V, a
capacity of at least 5000 mAh and dimensions of no more than: height 7 mm, length 90 mm, width 60
mm.
When purchasing and installing a battery with a capacity that is different from the capacity of the de-
vice installed by the manufacturer, you should take into account the fact that the time to fully charge the
battery will also change up or down.
When using a battery of a different capacity, the correspondence of the displayed battery
charge level on the device screen to the real value is not guaranteed.
To replace the battery, you will need to disassemble the device. Make sure you have the
tool, knowledge, and qualifications to replace the battery yourself. If you do not have enough ex-
perience and qualifications, contact specialists with the appropriate qualifications.
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