St Housing Design - Eneo VHM-EC/ST Serie Instrucciones De Manejo E Instalación

III.2 ST housing design
ST housing models have an interior central plug connec-
tion (see fig. 5, inner view of housing rear section). This
is where incoming cables for mains/video and control
are connected; individual assign-ment is shown in the
table below. Left, commencing with 3 contacts for the
asymmetrical or symmetrical video signal transmission;
in the middle, 6 contacts for the transfer of control
Fig. 5
VID 
Backpart ST housing (inside view)
Fig . 6
A B
TP
LENSMOTORS POTIS
AUX AUX AUX
B 3 A B  A B  A
ST housing / connection board
6 PE N L
- W +
ZOOM
FOCUS V
+ W - -
FUSE
T,5A
V
-
HT
PE
signals or DC low voltage supply, and right, 3 contacts
for mains connection.
The housing middle section is fitted with a screw
terminal board; fig. 6 shows its front view as seen from
the camera side. The top row contains the pin contacts
which, in the assembled state, provide the connection
with the central multipoint connector in the rear section.
The right section is reserved for the input voltage distri-
bution. This is where the connections for the camera or
power supply unit/thermostat Th/heater, as well as the
T,5A fuse (Fuse only in connection with a 30V heater
element) supplied and earth connections, are located.
The central and left sections are intended for low voltage
supply or control signal distribution. In detail, this
contains the following multipoint connections (starting
from the left):
• Coaxial cable with BNC plug for asym. video signal
• TP A-B:
• LENS MOTORS:
• Zoom potentiometer:
• Focus potentiometer: W = Wiper (Focus error)
5
Symmetrical video signal
(twisted pair)
FM+/FM- = Focus motor
ZM+/ZM- = Zoom motor
W = Wiper (Zoom error)
+/- = Error supply /
Error return
+/- = Error supply /
Error return