If unexpected phase variations are observed, this indicates that the elec&ical delay of the adapter was not specified witbin a quarter wavelength over the frequency range of interest.

‘lb correct this, recall both cal sets, since the data was previously stored to disk, change the

:.; .; .:.:...:...j .::..........

.,.. .:

 

adapter &lay, ad press ~~~~~~

 

.:..::: . . . . .

..i :

-

Example Program

The following is an example program for performing these same operations over HP-IB:

10 ! File : adaptrm. bas

20 !

30 ! This demonstrates how to do adapter removal over HP--1B. 40 !

50 ASSIGN ONa TO 716

60 !

70! Select internal disk.

80!

90OUTPUT ONa ,* “INTD t* ” 100 !

110 ! Assign file #1 to the filename that has a 2-port 120 ! caI previously performed for Port l’s connector.

130!

140OUTPUT ONa; “TITFl”“FlODCAL1”” ; ”

150!

160! Recall the cal set for Port 1.

170!

180 OUTPUT ONa; “CALSPORT ; ”

190!

200! Assign file 112 to the filename that has a 2-port

210! cal previously performed for Port 2’s connector.

220!

230OUTPUT ONa; “INTD ; TITF2”“F20DCAL2”” ; ”

240!

250! Recall the cal set for Port 2.

260!

270OUTPUT ONa; “CALSPORT ; ”

280!

290! Set the adapter electrical delay.

300!

310OUTPUT ONa; “ADAPl58PS; ”

320!

330! Perform the “remove adapter” computation.

340!

350! OUTPUT ONa; “MODS ; ”

360END

Optimizing Measurement Results 645