TWP/MPL/C1 - Scope Temp is incorrect

Scope temperature is incorrect because the probe failed/was missing.

Ignore the scope temperatures and assume the true values are acceptable.

• Telescope temperature(scope_temp)

• Telescope temperature(scope_temp)

• Telescope temperature(scope_temp)

TWP/MPL/C1 - Energy monitor registers 0

When the instrument was returned to service following replacement of the scope temperature 
sensor, the power supply was not turned on; hence system was not operating, though the 
software was.

• Preliminary cloud base height(preliminary_cbh)
• Time offset of tweaks from base_time(time_offset)
• Polarization control enabled flag(polarization_control)
• Telescope temperature(scope_temp)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• base time(base_time)
• Array of heights for the range gates(height)
• lon(lon)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Laser Temperature(laser_temp)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• range(range)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Attenuated backscatter(signal_return)
• Dummy altitude for Zeb(alt)
• time(time)
• Background Signal(background_signal)
• Polarization control voltage setting(polarization_control_voltage)
• Number of bins stored in data block(num_bins)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of detector channels(num_channels)
• Background signal standard deviation(background_signal_std)
• Laser output energy per pulse(energy_monitor)
• Detector Temperature(detector_temp)
• lat(lat)
• Dead time correction flag(dead_time_corrected)
• Number of laser pulses summed during averaging interval(shots_per_avg)

• Laser output energy per pulse(energy_monitor)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• range(range)
• Number of detector channels(num_channels)
• Attenuated backscatter, co-pol(signal_return_co_pol)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Dead time correction flag(dead_time_corrected)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• base time(base_time)
• lon(lon)
• Detector Temperature(detector_temp)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Array of heights for the range gates(height)
• *(aqc_signal_return_co_pol)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Background signal, cross-pol(background_signal_cross_pol)
• Time offset of tweaks from base_time(time_offset)
• Background signal, co-pol(background_signal_co_pol)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• *(aqc_signal_return_cross_pol)
• Telescope temperature(scope_temp)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• Laser Temperature(laser_temp)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• time(time)
• Number of bins stored in data block(num_bins)
• lat(lat)
• Dummy altitude for Zeb(alt)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)

• Attenuated backscatter, co-pol(signal_return_co_pol)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• base time(base_time)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Number of detector channels(num_channels)
• Laser Temperature(laser_temp)
• lon(lon)
• *(aqc_signal_return_cross_pol)
• Background signal, cross-pol(background_signal_cross_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• Array of heights for the range gates(height)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• lat(lat)
• Detector Temperature(detector_temp)
• Dead time correction flag(dead_time_corrected)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• Time offset of tweaks from base_time(time_offset)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• Dummy altitude for Zeb(alt)
• Background signal, co-pol(background_signal_co_pol)
• Number of bins stored in data block(num_bins)
• *(aqc_signal_return_co_pol)
• Laser output energy per pulse(energy_monitor)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• time(time)
• Telescope temperature(scope_temp)
• range(range)

TWP/MPL/C1 - Laser not transmitting

Laser was not turned on with remainder of system following power failure.

• Preliminary cloud base height(preliminary_cbh)
• Time offset of tweaks from base_time(time_offset)
• Polarization control enabled flag(polarization_control)
• Telescope temperature(scope_temp)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• base time(base_time)
• Array of heights for the range gates(height)
• lon(lon)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Laser Temperature(laser_temp)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• range(range)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Attenuated backscatter(signal_return)
• Dummy altitude for Zeb(alt)
• time(time)
• Background Signal(background_signal)
• Polarization control voltage setting(polarization_control_voltage)
• Number of bins stored in data block(num_bins)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of detector channels(num_channels)
• Background signal standard deviation(background_signal_std)
• Laser output energy per pulse(energy_monitor)
• Detector Temperature(detector_temp)
• lat(lat)
• Dead time correction flag(dead_time_corrected)
• Number of laser pulses summed during averaging interval(shots_per_avg)

• Laser output energy per pulse(energy_monitor)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• range(range)
• Number of detector channels(num_channels)
• Attenuated backscatter, co-pol(signal_return_co_pol)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Dead time correction flag(dead_time_corrected)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• base time(base_time)
• lon(lon)
• Detector Temperature(detector_temp)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Array of heights for the range gates(height)
• *(aqc_signal_return_co_pol)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Background signal, cross-pol(background_signal_cross_pol)
• Time offset of tweaks from base_time(time_offset)
• Background signal, co-pol(background_signal_co_pol)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• *(aqc_signal_return_cross_pol)
• Telescope temperature(scope_temp)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• Laser Temperature(laser_temp)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• time(time)
• Number of bins stored in data block(num_bins)
• lat(lat)
• Dummy altitude for Zeb(alt)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)

• Attenuated backscatter, co-pol(signal_return_co_pol)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• base time(base_time)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Number of detector channels(num_channels)
• Laser Temperature(laser_temp)
• lon(lon)
• *(aqc_signal_return_cross_pol)
• Background signal, cross-pol(background_signal_cross_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• Array of heights for the range gates(height)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• lat(lat)
• Detector Temperature(detector_temp)
• Dead time correction flag(dead_time_corrected)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• Time offset of tweaks from base_time(time_offset)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• Dummy altitude for Zeb(alt)
• Background signal, co-pol(background_signal_co_pol)
• Number of bins stored in data block(num_bins)
• *(aqc_signal_return_co_pol)
• Laser output energy per pulse(energy_monitor)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• time(time)
• Telescope temperature(scope_temp)
• range(range)

TWP/MPL/C1 - Missing data

Data are missing and unrecoverable.

• Preliminary cloud base height(preliminary_cbh)
• Time offset of tweaks from base_time(time_offset)
• Polarization control enabled flag(polarization_control)
• Telescope temperature(scope_temp)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• base time(base_time)
• Array of heights for the range gates(height)
• lon(lon)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Laser Temperature(laser_temp)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• range(range)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Attenuated backscatter(signal_return)
• Dummy altitude for Zeb(alt)
• time(time)
• Background Signal(background_signal)
• Polarization control voltage setting(polarization_control_voltage)
• Number of bins stored in data block(num_bins)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of detector channels(num_channels)
• Background signal standard deviation(background_signal_std)
• Laser output energy per pulse(energy_monitor)
• Detector Temperature(detector_temp)
• lat(lat)
• Dead time correction flag(dead_time_corrected)
• Number of laser pulses summed during averaging interval(shots_per_avg)

• Laser output energy per pulse(energy_monitor)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• range(range)
• Number of detector channels(num_channels)
• Attenuated backscatter, co-pol(signal_return_co_pol)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Dead time correction flag(dead_time_corrected)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• base time(base_time)
• lon(lon)
• Detector Temperature(detector_temp)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Array of heights for the range gates(height)
• *(aqc_signal_return_co_pol)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Background signal, cross-pol(background_signal_cross_pol)
• Time offset of tweaks from base_time(time_offset)
• Background signal, co-pol(background_signal_co_pol)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• *(aqc_signal_return_cross_pol)
• Telescope temperature(scope_temp)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• Laser Temperature(laser_temp)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• time(time)
• Number of bins stored in data block(num_bins)
• lat(lat)
• Dummy altitude for Zeb(alt)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)

• Attenuated backscatter, co-pol(signal_return_co_pol)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• base time(base_time)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Number of detector channels(num_channels)
• Laser Temperature(laser_temp)
• lon(lon)
• *(aqc_signal_return_cross_pol)
• Background signal, cross-pol(background_signal_cross_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• Array of heights for the range gates(height)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• lat(lat)
• Detector Temperature(detector_temp)
• Dead time correction flag(dead_time_corrected)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• Time offset of tweaks from base_time(time_offset)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• Dummy altitude for Zeb(alt)
• Background signal, co-pol(background_signal_co_pol)
• Number of bins stored in data block(num_bins)
• *(aqc_signal_return_co_pol)
• Laser output energy per pulse(energy_monitor)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• time(time)
• Telescope temperature(scope_temp)
• range(range)

TWP/MPL/C2 - Laser transmitter off

The laser diode power supply was inadvertantly turned off by the operators. Upon correct 
restarting sequence, system returned to normal.

• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Array of heights for the range gates(height)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Dummy altitude for Zeb(alt)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Attenuated backscatter, co-pol(signal_return_co_pol)
• *(aqc_signal_return_co_pol)
• Time offset of tweaks from base_time(time_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• lon(lon)
• *(aqc_signal_return_cross_pol)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• time(time)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)
• Detector Temperature(detector_temp)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Background signal, cross-pol(background_signal_cross_pol)
• base time(base_time)
• Laser output energy per pulse(energy_monitor)
• Background signal, co-pol(background_signal_co_pol)
• range(range)
• Dead time correction flag(dead_time_corrected)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• Number of bins stored in data block(num_bins)
• Telescope temperature(scope_temp)
• Laser Temperature(laser_temp)
• Number of detector channels(num_channels)
• lat(lat)

• Telescope temperature(scope_temp)
• lat(lat)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Number of samples used for co-pol averages(nsamples_co_pol_average)
• lon(lon)
• Dummy altitude for Zeb(alt)
• Detector Temperature(detector_temp)
• Background signal standard deviation, co-pol(background_signal_std_co_pol)
• *(aqc_signal_return_cross_pol)
• Number of laser pulses summed during averaging interval(shots_per_sample)
• Polarization control voltage, co-pol(polarization_control_voltage_co_pol)
• Number of samples used for cross-pol averages(nsamples_cross_pol_average)
• Preliminary cloud base height above ground level, co-pol(preliminary_cbh_co_pol)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• *(aqc_signal_return_co_pol)
• Preliminary cloud base height above ground level, cross-pol(preliminary_cbh_cross_pol)
• time(time)
• Attenuated backscatter, co-pol(signal_return_co_pol)
• Dead time correction flag(dead_time_corrected)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Number of detector channels(num_channels)
• Array of heights for the range gates(height)
• Attenuated backscatter, cross-pol(signal_return_cross_pol)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• Background signal, cross-pol(background_signal_cross_pol)
• Background signal, co-pol(background_signal_co_pol)
• Number of bins stored in data block(num_bins)
• Laser Temperature(laser_temp)
• range(range)
• Time offset of tweaks from base_time(time_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Polarization control voltage, cross-pol(polarization_control_voltage_cross_pol)
• Laser output energy per pulse(energy_monitor)
• base time(base_time)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)

• Background signal standard deviation(background_signal_std)
• lat(lat)
• Time offset of tweaks from base_time(time_offset)
• Preliminary cloud base height(preliminary_cbh)
• base time(base_time)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Detector Temperature(detector_temp)
• Background Signal(background_signal)
• Polarization control enabled flag(polarization_control)
• Dummy altitude for Zeb(alt)
• Polarization control voltage setting(polarization_control_voltage)
• Number of detector channels(num_channels)
• range(range)
• Number of bins stored in data block(num_bins)
• Telescope temperature(scope_temp)
• time(time)
• lon(lon)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Attenuated backscatter(signal_return)
• Array of heights for the range gates(height)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Laser Temperature(laser_temp)
• Laser output energy per pulse(energy_monitor)
• Number of laser pulses summed during averaging interval(shots_per_avg)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Dead time correction flag(dead_time_corrected)