1-6 General Information1.9 Rear PanelFig. 1-2 Rear PanelLegend from left to right:- RS232 9 pin, DB9 connector- GPIB IEEE488 I/O Port (optional)- USER PORT User I/O Port- USB Fully functional USB 2.0 Port- LINK1/LINK2 Optical link connectors for PMM equipments (Link 2 for future implementation)- Power Supply Power Supply Inputs for use to power the apparatus and simultaneously chargeits battery (PS1) and to simply charge the battery when it’s out of the receiver(PS2).- Fan Cooling Fan controlled by firmware- Replaceable Li-Ion Battery (Fig. 1-3) with main Battery Charger connector- Earth ground connector- Product Label and Serial NumberFig. 1-3 BP-02 Replaceable BatteryPS1PS2