An electronic measuring device, comprising: a main printed circuit assembly; and one or a plurality of channel modules ) mechanically and electrically connected to the main printed circuit assembly , wherein at least one channel module of the one or a plurality of channel modules comprises: a channel printed circuit board electrically connected to the main printed circuit assembly , the channel printed circuit board having a first side and an opposing second side; a first insulating housing disposed on the channel printed circuit board , the first insulating housing defining a cavity , the cavity covering at least part of electrical elements mounted on the first side of the channel printed circuit board ; a first conductive shielding frame at least partially disposed on the first insulating housing and separated from the cavity and the channel printed circuit board via the first insulating housing , and the first conductive shielding frame covering the at least part of electrical elements mounted on the first side of the channel printed circuit board ; and a second insulating housing disposed on the first conductive shielding frame and configured to sandwich the first conductive shielding frame between the second insulating housing and the first insulating housing , so as to lengthen an electrical path from the first conductive shielding frame to the channel printed circuit board . a main printed circuit assembly; and one or a plurality of channel modules ) mechanically and electrically connected to the main printed circuit assembly , wherein at least one channel module of the one or a plurality of channel modules comprises: a channel printed circuit board electrically connected to the main printed circuit assembly , the channel printed circuit board having a first side and an opposing second side; a first insulating housing disposed on the channel printed circuit board , the first insulating housing defining a cavity , the cavity covering at least part of electrical elements mounted on the first side of the channel printed circuit board ; a first conductive shielding frame at least partially disposed on the first insulating housing and separated from the cavity and the channel printed circuit board via the first insulating housing , and the first conductive shielding frame covering the at least part of electrical elements mounted on the first side of the channel printed circuit board ; and a second insulating housing disposed on the first conductive shielding frame and configured to sandwich the first conductive shielding frame between the second insulating housing and the first insulating housing , so as to lengthen an electrical path from the first conductive shielding frame to the channel printed circuit board . a channel printed circuit board electrically connected to the main printed circuit assembly , the channel printed circuit board having a first side and an opposing second side; a first insulating housing disposed on the channel printed circuit board , the first insulating housing defining a cavity , the cavity covering at least part of electrical elements mounted on the first side of the channel printed circuit board ; a first conductive shielding frame at least partially disposed on the first insulating housing and separated from the cavity and the channel printed circuit board via the first insulating housing , and the first conductive shielding frame covering the at least part of electrical elements mounted on the first side of the channel printed circuit board ; and a second insulating housing disposed on the first conductive shielding frame and configured to sandwich the first conductive shielding frame between the second insulating housing and the first insulating housing , so as to lengthen an electrical path from the first conductive shielding frame to the channel printed circuit board . <EOS>