Correct positioning of the switch ''DC at RF IN'' switch (RF antenna input voltages)


When operating in CATV networks under voltage (Vac 66/96), ALWAYS isolate the RF antenna input of the instrument using the power switch "DC @ RF IN" on the top (eg Figure 1) or to the side of the instrument (eg Figure 2).

Otherwise, if the external voltage (Vac 66/96) is sent repeatedly and for long periods to the RF input of the instrument while the instrument itself generates 12 VDC, you may damage irreparable the instrument.

Figure 1: DC @ RF IN switch Figure 2: DC @ RF IN switch

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