Boltek EFM-100 v.2 - Manual (Page 16)

C H A P T E R 2 - I N S T A L L A T I O N
10
Analog Output
Analog output is available on the EPM-1 Power Module. Output voltage is 1V per kV/m
differential, ranging from +20V corresponding to +20kV/m to -20V corresponding to
-20kV/m. Note that EPM-1 connections are directly connected to the field mill and a
lightning hazard exists at those connections.
LIGHTNING HAZARD
EPM-1 connections are not optically isolated from the roof mounted field
mill. Dangerous voltages may occur should lightning strike at or near the
field mill.
Figure 8: EPM-1 Voltmeter Connections – Differential (Preferred Connection)
If a differential connection is not possible a single-ended connection may be made.
Figure 9: EPM-1 Voltmeter Connections – Single Ended