<html><body><div style="font-family: tahoma,new york,times,serif; font-size: 14pt; color: #009900"><div>brian,<br></div><div>thanks for the answers.<br data-mce-bogus="1"></div><div>you're right, the 120KHz glenn determined is not from any equipment. <br data-mce-bogus="1"></div><div>but with regards to the threshold, do you mean the QD performs a Common Mode Rejection kind of procedure.<span id="transmark" style="display: none; width: 0px; height: 0px;"></span><br></div><div>hope to hear from pablo.<br data-mce-bogus="1"></div><div>amrit<br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Brian Eng" <beng@jlab.org><br><b>To: </b>"Amrit Yegneswaran" <yeg@jlab.org><br><b>Cc: </b>"dsg-hallb magnets" <dsg-hallb_magnets@jlab.org><br><b>Sent: </b>Friday, September 15, 2017 3:57:17 PM<br><b>Subject: </b>Re: [Dsg-hallb_magnets] qdi thresh<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">The QD threshold uses the difference between lower and upper, so that would (or should) have been cancelled out by the lower.<br><br>----- Original Message -----<br>> From: "Amrit Yegneswaran" <yeg@jlab.org><br>> To: "dsg-hallb magnets" <dsg-hallb_magnets@jlab.org><br>> Sent: Friday, September 15, 2017 3:53:45 PM<br>> Subject: [Dsg-hallb_magnets] qdi thresh<br><br>> brian,<br>> if these be baseline shifts you need to go to 1.69/2+0.500 V ~1.3 V on both PLC<br>> and hardwired.<br>><br></div></div></body></html>