The Earth / Grounding Concept - Violectric HPA V200 User Manual

VIOLECTRIC HPA V100/200 GROUND CONCEPT / BLOCK CIRCUIT
LEFT BALANCED INPUT
Ground Lift Jumper:
XLR female
G(round)
1
L(ift)
3
C(ase)
LEFT UNBALANCED
INPUT CINCH
RIGHT BALANCED INPUT
Ground Lift Jumper:
XLR female
G(round)
1
L(ift)
3
C(ase)
RIGHT UNBALANCED
INPUT CINCH
AC Mains
Socket
L
Earth / PE to Case
General GROUND-LIFT Jumper (accessible from the inside.
Mind the SECURITY INSTRUCTIONS !! ):
Ex-works this jumper is set to the GND/GROUND position.
The internal ground potential - normally connected to the external earth
reference at this point - may be lifted by means of this jumper.
As a result, the interconnection for DC voltages and lower frequencies
(< 150 Hz) will be cut. Higher frequencies will be bled off to earth
potential through the RC filter. The LIFT position may be helpful in case
of hum or jitter caused by different ground/earth potentials.

The Earth / Grounding Concept

2
2
E
N
AC IN
E
GENERAL GROUND-LIFT JUMPER
POWER SUPPLY
+ U - U (others)
18/30 V 18/30 V
Toroidal Transformer
230 / 115 V AC
GND
Lift
ENCLOSURE
7
POWER AMP
TIP RING
LEFT RIGHT
SLEEVE
GROUND