7500 实时荧光定量 PCR 系统，便携式计算机

The 7500 software requires that the endogenous control be run on every plate within a study. If not, you will only see RQ values for the plate that contains the endogenous control on it. The other plates will have CT values for all the wells, but the software will not calculate RQ values.

If you designed your experiments in this type of layout, you will want to do your analysis in the free DataAssist software instead. This program does not have the endogenous control requirement for every plate. Simply export the study results file from the 7500 software as a *.txt or *.csv file, and use that to create a new study in the DataAssist software. You should now be able to see RQ values for all samples, even those without an endogenous control on the same plate.

Find additional tips, troubleshooting help, and resources within our Real-Time PCR and Digital PCR Instruments Support Center.

If you have the SDS v1.4 or earlier, you will need to open the dd CT plate in a Study first in order to see the CT or RQ values. (If you have v2.0.x this error does not apply.)

1.After the initial run is complete, open, review the plots and save it. Then:
-Choose File then New
-Choose: Assay then ddCT (Relative Quantitation) Study. Set the other parameters as appropriate and click Next.
2.Click on ‘Add Plates...', then browse to where your data file is located and select the plate (or multiple plates).
Click ‘Finish', and you should see your study.

Find additional tips, troubleshooting help, and resources within our Real-Time PCR and Digital PCR Instruments Support Center.

You may encounter this error message, which will abort the run before it even starts. If so, go into the software under Setup then Run Method and check how much time has been set for the data collection step. The instrument has a minimum collection time, which is dependent on the number of filters being used. (This is true in both the 1.x and 2.0.x versions of the 7500 software.) Increase the extension time to 30 sec and restart the run. It should now proceed as normal. If the error persists, please contact us at techsupport@thermofisher.com for further assistance.

Find additional tips, troubleshooting help, and resources within our Real-Time PCR and Digital PCR Instruments Support Center.

This error can be caused by the wrong plastics being used in the block, such as the wrong Precision Plate Holder being used in the tray. This can give an error message such as “Block up switch not activating” and will not allow the run to start. Open the drawer, make sure the correct plate/tubes and plate/tube holder are being used and in the correct orientation. Turn off the instrument and open the front cover to make sure the heated cover door is closed. Restart the instrument and retry the run. If the error still persists, please contact us at instrumentservices@thermofisher.com for further assistance.

Find additional tips, troubleshooting help, and resources within our Real-Time PCR and Digital PCR Instruments Support Center.

If you see this error message, please check the following:

1. Verify that the USB connection is secure between the instrument and computer.
2. Verify that the computer user power save settings are set to Never for all users (in Windows under Control Panel, Power Options).
3. Is there a screen saver in use? If so, set the screen saver so that it will not come on during a run.
4. Is there antivirus or other network software in use? If so, disconnect from the network while running the instrument.
If the error persists, please contact us at instrumentservices@thermofisher.com for further assistance.

Find additional tips, troubleshooting help, and resources within our Real-Time PCR and Digital PCR Instruments Support Center.