DQRID : D140602.1
Start DateStart TimeEnd DateEnd Time
02/01/2014120002/04/20142100
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Subject:
MAO/CCN/M1 - Communication loss
DataStreams:maoaosccn100M1.a1
Description:
The instrument lost communication with the computer and had to be rebooted.
Suggestions: 
Measurements:maoaosccn100M1.a1:
  • Bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
  • lon(lon)
  • AOS CCN sample pressure(CCN_P_sample)
  • AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
  • AOS CCN OPC laser current(CCN_laser_current)
  • AOS CCN number concentration by bin(N_CCN_dN)
  • AOS CCN temperature of the optical particle counter(CCN_T_OPC)
  • AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
  • Size of upper limit of each CCN bin(CCN_upper_size_limit)
  • AOS CCN observed temperature at top of column(CCN_t_read_TEC1)
  • AOS CCN set point for temperature at top of column(CCN_t_set_TEC1)
  • time_in_seconds_since_volume_start(time)
  • AOS CCN observed temperature at middle of column(CCN_t_read_TEC2)
  • Temperature difference between CCN_t_set_TEC3 and CCN_t_set_TEC1(CCN_temperature_gradient)
  • AOS CCN (read) temperature at bottom of column(CCN_t_read_TEC3)
  • AOS CCN voltage used by DMT for OPC diagnostic purposes(CCN_baseline_monitor)
  • AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
  • AOS CCN logical value, indicating whether the instrument has reached thermal
    gradient stabilization and is within 0.4 degrees C of the set point(CCN_temp_unstable_flag)
  • AOS CCN set point for temperature at middle of column(CCN_t_set_TEC2)
  • AOS CCN set point for temperature at bottom of column(CCN_t_set_TEC3)
  • AOS CCN set point temperature for the optical particle counter (OPC)(CCN_OPC_set)
  • base time in epoch(base_time)
  • -180.0 - +180.0(alt)
  • AOS CCN set point temperature for the inlet manifold(CCN_inlet_set)
  • CCN Proportional valve voltage(CCN_proportional_valve_voltage)
  • Time offset from base_time(time_offset)
  • Cloud condensation nuclei number density(N_CCN)
  • North Latitude(lat)
  • AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
  • First stage monitor voltage(CCN_first_stage_monitor_voltage)
  • CCN alarm code expressed as a summation of powers of 2. 0 indicates no detected
    problem(CCN_alarm_code)
  • AOS CCN temperature of sample air entering the column(CCN_T_sample)
  • Number of particles that are larger than 10um(CCN_overflow)
  • AOS CCN set temperature for the Nafion humidifier(CCN_nafion_set)
  • AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
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