Do you have API available for D4000?
As of July 2020, we only have SCPI available for D4000. We are planning to provide Python API support for D4000 in the near future.  Users can alway...
Fri, Jul 10, 2020 at 6:12 PM
What are the pre-select filers for D4000?
There are 8 pre-select filters in total. they are: Filter 1: 38 - 41 GHz Filter 2: 36 - 39 GHz Filter 3: 34- 37 GHz Filter 4: 32 - 35 GHz Filt...
Fri, Sep 18, 2020 at 12:29 PM
What does CTRL port do on the D4000?
That's for connecting it to other future external modules and have an external unit to control it.  
Thu, Jul 2, 2020 at 2:58 PM
What is the tuning resolution for D4000?
The tuning resolution is 100kHz.
Fri, Aug 21, 2020 at 5:16 PM
What is the front-end attenuation range on the D4000?
The front-end attenuator or user control attenuator range is from 0 dB to 31.5 dB with 0.5 dB step size. 
Fri, Sep 18, 2020 at 12:35 PM