Yokogawa Button Operated MV2000 - Manual (Page 30)

Functional Grounding
When using the AC adapter, connecting the functional grounding terminal of the
instrument to earth ground reduce noise. Use the functional grounding terminal as
necessary.
Charging the Ni-MH Battery
The battery box is not enough charged at the time of shipment. When using the battery
box for the first time, fully recharge the battery before use.
The AC adapter (B8070TN) is also needed to charge up the battery.
WARNING
• Always charge the battery through the MV1000.
• Recharge the battery in an environment with a temperature between 10 and 40 °
C. Otherwise, the battery may leak, heat up or not get fully charged.
Charging procedure
1. Install the battery box as explained previously and connect the AC power supply
to the recorder.
2. The CHARGE LED (yellow) at the front of the battery box lights and the Ni-MH
battery is charged. When the battery is fully charged, the CHARGE LED blinks
rapidly.
The Ni-MH battery is charged whether the power switch is turned ON or OFF.
Note
• When the CHARGE LED is blinking slowly (the LED is lit for approximately 1 s), the battery
is waiting to be charged. The battery will enter the charge wait condition in the following
cases:
When the ambient temperature around the battery is outside the 10 to 40 °C range.
When the battery performance has severally deteriorated due to over discharge, for
example.
• Even if the CHARGE LED is blinking rapidly (indicating that the battery is fully charged), the
battery may not be charged in the following cases:
If the battery temperature exceeded 65 °C during the charging operation.
When the ambient temperature changed drastically.
Charge time
The charge time is approximately 2.5 hours. The fast charge time (CHARGE LED
blinking) is approximately 2 hours (depends on the ambient conditions). However, to fully
charge the battery, auxiliary charging is required for an additional 10 minutes or more
after fast charging. Thus, the charge time is approximately 2.5 hours. If you leave the AC
adapter connected after fast charging, the MV1000 performs auxiliary charging (pulse
charging) for approximately 3 hours. Then, the MV1000 switches to trickle charging.
CAUTION
If the CHARGE LED remains ON for over 2.5 hours, the MV1000 may have
malfunctioned. In such case, contact your nearest YOKOGAWA dealer.
Connecting a Power Cable
30
IM MV1000-02E