Series EJ, ET, EY, FJ & FR
102002-177 Rev M2
37
\1020\02177M2.doc 17 Jun 2019
J3-24 ARC STATUS
If the supply includes ARC Quench, when an ARC discharge occurs this signal will
transition from Low to High for a 20ms duration (20ms high pulse for each ARC).
An ARC is defined as an instantaneous HV output discharge that exceeds 15-30% of
the supply voltage rating.
High is a 1k resistor pull up to +5V.
Low is 0V (common) and can sink up to 5mA.
J3-15 & J3-16 REMOTE HV ON
These terminals when momentarily jumped initiate HV ON. This is the remote
equivalent of pushing the HV ON button on the front panel.
There are three ways to connect these terminals:
1. Leaving them open allows normal HV ON from the front panel only. The
STANDBY button turns the HV OFF and resets any faults.
2. Placing a momentary switch across these terminals allows turning the HV ON
either locally (front panel) or remotely. The STANDBY button turns the HV
OFF and resets any faults.
3. Placing a jumper between these terminals bypasses the front panel HV ON
button and the HV will turn ON as soon as the AC power switch is turned on.
The STANDBY button will not turn the HV OFF. The interlock will turn the
HV OFF but it will turn ON as soon as the interlock is closed.
Open circuit voltage is 2V. Closed current is 2mA.
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