CBL, CBL 2, LabPro and CBR

CBL 2 and LabPro can measure in 3 different ways. CBL only in 2 ways.

1. Realtime, measurements are transferred online.

2. Non realtime, measurements are saved in the logger.

3. Non realtime - fastmode, as 2, but with times from 20 us.

Realtime:

Labpro uses a fast serial communication, hence the 50 measurements per second. (Unfortunately I had to change this from 100 to 50 measurements per second because LabPro changes smaller time intervals than 0,02 seconds to 0,02 seconds automatically.)

CBL assumes a temperature of 20 °C for the speed of sound.

Power constant ON means that there is a voltage on the connected probes all the time. This can make a difference for a pH-probe or a CO₂ probe. Then you should use an adaptor to avoid using up the battery of the device rather quickly!

Delay should be used if you connect a probe that needs to warm up before measuring. When you click on measure, measuring begins normally but no data is collected until the delay time has passed.

Digital out can be used to control from 1 to 4 relays. You can transmit 4 bits to the output (0001, 0010,... 1111).

Analog out on the LabPro is adjustable from -3V to 3V in increments of 1,22 mV. The voltage is transmitted on connector 1 (white wire) on the CH 4.

Probe auto detection: The CBL 2 and the LabPro can transmit the name of the probe to the pc. You only have to choose Auto... for the probe.

Non Realtime: 

CBL:

If you choose trigging the CBL display will read Ready until the trigging condition is fulfilled. At Manual trigging the scan begins when you press the TRIGGER button on the CBL.

CBL 2 or LabPro:

If you choose trigging the light indicator will show yellow or green until the trigging condition is fulfilled. At Manual trigging the scan begins when you press the Start/Stop button on the CBL 2 / LabPro.

It is not possible to trigger on temperature but you can trigger on all other probes. You type in the trig value in the probes unit. E.g. 20 if you want a trig value of 20 Newton.

Prestore (%) can take any value from 0 to 100 and if Prestore is selected p(%) of the measurings will be earlier than the trigger condition.

Delay should be used when you connect a probe that needs some time to warm up before measuring. CBL 2 / LabPro does not start measuring until the delay-time has passed.

Digital out can be used to control from 1 to 4 relays. You can transmit 4 bits to the output (0001, 0010,... 1111). 

Dialog while measuring: (CBL 2 and Labpro)

When you begin an online scan, the memo is opened. If you click on »Read Scan« Datalyse will check if the measurements are complete. If not a message is written.

You can interrupt the scan by clicking »Stop measuring«. Then Datalyse will be able to read the completed measurements from the memory of the device.

Non realtime - fastmode (only LabPro):

In fastmode the LabPro can function as a scope. Time per measurement can be set to 20 us, 30 us, ..., or 100 us. And the number of measurements can be 128, 256, 512,... or 2048.

The LabPro is setup to measure in fastmode. In this setting you cannot communicate with LabPro while measuring. This means that after every measuring command, Datalyse will wait for the time it takes to perform the measurements. When the time is up, the data is transferred. If you use trigging, Datalyse will wait for twice as long. Data is transferred in Hex format and it takes less than 2 seconds to transfer 2048 values.

In the control panel you can select trigging. Note that the triggering condition should be fulfilled - otherwise LabPro responds with an error code.

Probe auto detection is used but you can still select a voltage interval. This is useful since the resolution and input impedance are different for connector 1 and 6: