# Sylvac UL 4 - USB - (Send data) reports 'no.data'?

Using the sylvac UL 4 Each time I invoke the (send data) function the sylvac LED panel reports 'no.data'. To mention the obvious but nothing is received at the connected USB device.

My question is. . How do force the sylvac device to (have data) to send? Can anyone explain what this 'no.data' actually means from the calipers perspective?

• I've updated the answer with a solution. Please check it below. Oct 27, 2020 at 14:22

As briefly mentioned above, you need to either connect the caliper to one of the software "masters" offered by Sylvac, or use the caliper in HId mode.

Enable the HId mode through a sequence that might look like this below. Please note that some calipers don't have HId mode.

This might be a good place to start

• This doesn't answer the OP question. If anything, the instructions from Sylvac are disorganized at best, and don't work in the same manner on all devices (definitely not on mine). Mar 24, 2020 at 10:05

No.data: Value could not be sent via Bluetooth® Technology. Check the Bluetooth® connection on instrument and master device (on/off). Check if you are within the max. transmission range 5-15m.

https://www.sylvac.ch/faq?view=topic&id=2

I have now resolved this issue in my case: the caliper's BT connection needs to be set up using the app that Sylvac has made for this. Note, if you've used the phone's BT procedure, it's the wrong way.