BTS Master MT8221B and MT8222B : Instrument Overview : Hardware Overview
  
Hardware Overview
Turning On the MT8221B for the First Time
The Anritsu MT8221B BTS Master is capable of approximately 2.5 hours of continuous operation from a fully charged, field‑replaceable battery (refer to Section Battery Replacement of General Information). The MT8221B can also be operated from a 12 VDC source (which will also simultaneously charge the battery). This can be achieved with either the Anritsu AC–DC Adapter or 12 VDC Automotive Cigarette Lighter Adapter. Both items are included as standard accessories.
Caution
When using the Automotive Cigarette Lighter 12 VDC Adapter, always verify that the supply is rated for a minimum of 60 Watts at 12 VDC and that the socket is clear of any dirt or debris. If the adapter plug becomes hot to the touch during operation, then discontinue use immediately.
To turn on the MT8221B, press the On/Off button on the front panel (Figure: MT8221B On/Off Button).
MT8221B On/Off Button
The MT8221B BTS Master takes approximately sixty seconds to complete power‑up and to load the application software. At the completion of this process, the instrument is ready to be used.