T-340
4–20
4.8.6
Sampling Type (dCF05 & dCF06)
Three types of data sampling are available: average, snapshot andUSDA.When configured to average, the aver
-
age of readings taken every minute over the recording period is recorded. When configured to snapshot, the sen
-
sor reading at the log interval time is recorded. When USDA is configured, supply and return temperature readings
are averaged and the three USDA probe readings are snapshot.
4.8.7
Alarm Configuration (dCF07 - dCF10)
USDA and cargo probe alarms may be configured to OFF, ON or AUTO.
If a probe alarm is configured to OFF, the alarm for this probe is always disabled.
If a probe alarm is configured to ON, the associated alarm is always enabled.
If the probes are configured to AUTO, they act as a group. This function is designed to assist users who keep the
DataCORDER configured for USDA recording, but do not install the probes for every trip. If all the probes are dis
-
connected, no alarms are activated. As soon as one of the probes is installed, all of the alarms are enabled and the
remaining probes that are not installed will give active alarm indications.
4.8.8
DataCORDER Power Up
The DataCORDER may be powered up in any one of four ways:
1.
Normal AC power:
The DataCORDER is powered up when the unit is turned on via the Stop-Start switch.
2.
Controller DC battery pack power:
If a battery pack is installed, the DataCORDER will power up for commu
-
nication when an interrogation cable is plugged into an interrogation receptacle.
3.
External DC battery pack power:
A 12 volt battery pack may also be plugged into the back of the interroga
-
tion cable, which is then plugged into an interrogation port. No controller battery pack is required with this
method.
4.
Real Time Clock demand:
If the DataCORDER is equipped with a charged battery pack and AC power is not
present, the DataCORDER will power up when the real time clock indicates that a data recording should
take place. When the DataCORDER is finished recording, it will power down.
During DataCORDER power-up, while using battery-pack power, the controller will perform a hardware voltage
check on the battery. If the hardware check passes, the controller will energize and perform a software battery volt
-
age check before DataCORDER logging. If either test fails, the real time clock battery power-up will be disabled
until the next AC power cycle. Further DataCORDER temperature logging will be prohibited until that time.
Table 4–3 DataCORDER Standard Configurations
Standard Configuration
Description
2 sensors (dCF02=2)
2 thermistor inputs (supply & return)
5 sensors (dCF02=5)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
6 sensors (dCF02=6)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 humidity input
9 sensors (dCF02=9)
Not Applicable
6 sensors (dCF02=54)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 cargo probe (thermistor input)
7 sensors (dCF02=64)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 humidity input
1 cargo probe (thermistor input)
10 sensors (dCF02=94)
2 thermistor inputs (supply & return)
3 USDA thermistor inputs
1 humidity input
1 cargo probe (thermistor input)
3 C.A. inputs (NOT APPLICABLE)
