In the SPCM software in “System Parameters” in the section “Page Control” there is a “Delay” setting. This setting must be used if a router (HRT-41, HRT-81, HRT-82) or a PML-16 is used. This setting does not delay laser synchronization signals or single photon pulses. If no router is in use the Latch Delay must be set to 0.
![](https://www.becker-hickl.com/wp-content/uploads/2019/11/SPCM-Control-Parameters-Routing.png)
The “Delay” setting in the section “SYNC Parameters” becomes available if a USB Sync Delay Box is connected to the computer and activated in ” SPCM -> Devices -> Sync Delay”:
![](https://www.becker-hickl.com/wp-content/uploads/2019/11/SPCM-Sync-Delay-activatin-dialog.png)