"Well there is one exception to the idiot-proofing and that occurrs if you use macros that have the PCxxx command in them for setting power. Under certain conditions if a PCxxx command is used in a macro it can overide the CONFIG:PWR SET Per bAnd setting. I have removed all PCxxx commands from my macros until I understand this completely and have tested each macro."
That vulnerability probably also exists for a power command sent by an external application. An external controller can never be as fast as the AUX Bus link but it can react fairly quickly. In this example I forced my TS-590S to well above the coded band max power limit using DXLab Commander. My controller disabled the KAT500 key line, forced my TS-590 back to band power limit and, when band limit power was confirmed, my controller re-enabled the key line. (time with 1 ms resolution is elapsed time since controller reset) 54:03:44.949 New PC - PC075; << controller sees increased power setting of 75 W 54:03:44.951 Power protection activated 54:03:44.953 band power limit exceeded 54:03:44.954 Sending AMPI1; to KAT500 << KAT500 is commanded to inhibit the key line 54:03:45.022 Sending PC030;AN999; to Kenwood << TS-590 is commanded back to band power limit 54:03:45.036 New AMPI - AMPI1; << KAT500 confirms key line is inhibited 54:03:45.266 New PC - PC030; << TS-590 reports band limit power is set 54:03:45.268 Power protection cleared 54:03:45.269 Sending AMPI0; to KAT500 << KAT500 is commanded to re-enable the key line 54:03:45.512 New AMPI - AMPI0; << KAT500 confirms key line is enabled Would it have prevented a KPA500 fault if I had been transmitting, I don't know. I try to avoid tests that are potentially damaging to my equipment. I do know that my controller caught the error and fixed it far faster than I could have done. 73, Andy, k3wyc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
