HP 8753E manual Power Coupling Options, Channel coupling, Test port collpling

Power Coupling Options

There are two methods you can use to couple and uncouple power levels with the HP 87533:

nchannel coupling

nport coupling

By uncoupling the primary channel powers, you effectively have two separate sources. Uncoupling the test ports allows you to have different power levels on each port.

Channel coupling

~~~~~~~~~~~~~~ toggles between coupled and uncoupled primary &me1 power. With :.i<.>>>>.<<.#.;i..,...,,,.;;..;...;;.;;;;;;; ;:::.:2......./T....................../.....:..:;....i,...........,/.......i ......i.. :

the channel power coupled, the power levels are the same on each channel. With the channel power uncoupled, you can set different power levels for each primary channel. For the

channel power to be uncoupled, the other channel stimulus functions must also be uncoupled

~~~~~~~~~)

. . .&:~.. .. .. ...;?.. .. . . . .... ........ ..... ..I. .,.w;; ,...,Ai,,.,......,.,...;..... ,..........w......>:....A -

Test port collpling

., ..: _ _ _ .,..;

.~~~~~~~~~~~~~~~~~;;. toggles between coupled and uncoupled test pofic With the test ::h;>;s5<:.,.:.* i....,.i...................:::;.;;:............/..<<<c...<<: i............... ,>....>.......i..A.,a;,.:.::...../:.:-i.....:..;;;.:..

ports coupled, the power level is the same at each port. With the ports uncoupled, you can set a different power level at each port. This can be useful, for example, if you want to simultaneously perform a gain and reverse isolation measurement on a high-gain amplifier using the dual channel mode to display the results In this case, you would want the power in the forward direction (Szl) much lower than the power in the reverse direction (S&

6-16 Application and Operation Concepts