Remote Spectrum Monitorâ„¢ MS27201A User Guide : Instrument Overview : Turning On the MS27201A RSM
 
Turning On the MS27201A RSM
The Anritsu MS27201A RSM is operated from a 15 VDC source connected to the rear panel. This can be achieved with either the Anritsu AC-DC adapter or the automotive power adapter, which can be purchased as an optional accessory. Refer to the instrument Technical Data Sheet for more options and accessories.
Caution 
When using the Automotive Power Adapter, always verify that the supply is rated for a minimum of 75 watts @ 15 VDC, and that the socket is clear of any dirt or debris. If the adapter plug becomes hot to touch during operation, discontinue use immediately.
The Remote Spectrum Monitor automatically turns on when power is applied to the rear panel power input port and takes approximately 60 seconds to completely power-up and to load the instrument software. At the completion of this process, the instrument is ready for use.
Note 
Keep the fan inlet and exhaust ports clear of obstructions at all times for proper ventilation and cooling of the instrument.