Questions on the DC/AC Power Inverter of HX-200

Hi,

I've few questions related to power inverter DC/AC requirements to power up the HX-200 remote modem. My questions as listed below;

1. What is the wattage requires to operate this remote modem?
2. Does it has peak or surge wattage that will draw a higher wattage than its normal operating wattage rating when first start up? If so, what is the peak wattage?
3. Does it sensitive to squares wave and requires a "perfect sine" wave output from the inverter?

Thank you.

Regards,

John