In general, text within each block may be edited in the PowerPoint version. In this case, copy the PowerPoint object block/group to your drawing and edit the text.
OR grab the .png block image below that has no text, and add your own text and labels.
Balance detector block (1)
[with and without text]
Balance detector block (2)
[with and without text]
Balance detector block (3)
[with and without text]
Balance detector block (4)
[with and without text]
Balance detector block (5)
[with and without text]
Balance detector block (6)
[with and without text]
Delay stage (1)
[with and without text]
Delay stage (2)
[with and without text]
Delay stage (3)
[with and without text]
Delay stage (4)
[with and without text]
Delay stage (5)
[with and without text]
Delay stage (6)
[with and without text]
Delay stage (7)
[with and without text]
Delay stage (8)
[with and without text]