Anywave RF Manuel de l'utilisateur - Page 9

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RF Switch Controller User Manual

3) Switching Procedure: As shown in Figure 3, if the output power of

the amplifier A (now 47W) is less than the AMP_FWD_MIN (set to be

50W), then the Controller will check for a few more times to make sure the

output power is constantly lower than the threshold. This detection period

will take about 30 seconds. Once the power level is confirmed to be lower

than the threshold, then the Controller will switch from amplifier A to

amplifier B using the coaxial switch. The Switch over process is as follows:

first the Controller will mute both amplifiers remotely, then the Controller

will use the coaxial switch to switch amplifier B to the antenna and

amplifier A to the dummy load, as you can see the real time status showing

in LPTV_USED has changed from LPTV_A to CHANGE TO B in

FIG. 5, then the Controller will unmute amplifier B. Amplifier B will be

ramped up from zero to the rated power as shown in figure 6 and

7. Amplifier A RF remains off.

Figure 5

(Detected LPTV_A output is less than AMP_FWD_MIN, shut down both amplifiers,

and to switch to LPTV_B)

RF-SWITCH-USR-DOC-V2.0, 1/6/2017

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