PVC/MPL/M1 - Instrument failure after power outage

MPL was intermittently down for a few days before going completely down for ~17 days.  
When it came back online on 10/22, the background signals were too high. The instrument was 
replaced 20130123.

• polarization_control
• pulse_rep
• Preliminary cloud base height above ground level(preliminary_cbh)
• num_channels
• mcs_mode
• Attenuated backscatter, cross pol(signal_return_cross_pol)
• num_bins
• Attenuated backscatter, copol(signal_return_co_pol)
• background_signal_std_cross_pol
• polarization_control_voltage
• range_bins
• scope_temp
• range_bin_time
• Pressure, associated geometric height, at altitude, NGM model output(height)
• range_bin_width
• deadtime_correction
• range
• max_altitude
• overlap_correction
• deadtime_correction_counts
• background_signal_std_co_pol
• overlap_correction_heights
• background_signal_co_pol
• first_data_bin
• dead_time_corrected
• range_offset
• background_signal_cross_pol