5
6X-1050a
3960 CAMERA
INSTALLATION AND OPERATION
CAMERA RELATED
Imager
1/4-inch interline transfer color CCD
Resolution
NTSC or PAL: 470 horizontal tv lines
S/N Ratio
>50 dB
Sensitivity
Color, day, 1/60 sec
3.0 lux
Color, day, 1/4 sec
0.2 lux
Mono, night, 1/60 sec
0.3 lux
Mono, night, 1/4 sec
0.02 lux
Iris
Auto or manual override
Shutter
Auto or manual override
Focus
Auto or manual override
Sync
Interal ac linelock with remote line lock for system-wide sync
Lens
Intergal 23X optical (3.6 to 82.8 mm)
10X digital
Auto / manual focus
Day/Night Switch Over
Day (color) / night (mono), auto or manual control
Humidity
100 percent relative humidity
Camera Housing Pressurization
Sealed and pressurized to 5 psig (35 kPa) with dry nitrogen
Rated IP67, NEMA 4X
COMMUNICATIONS RELATED
Communications
RS-422 serial with digital positioning feedback
Protocol
NTCIP Pelco D
Cohu multiprotocol Philips / Bosch RS-232
Javelin Ultrak
Kalatel / GE Vicon Surveyor
Firmware
Stored in flash memory; uploaded via serial port
Table 1. Specifications (continued)
All electrical connections are made via a 34-
inch pigtail cable permanently attached to the
bottom of the 3960 base. A connector with positions
for 16 pins is connected to this cable to provide all
electrical connections. Only 11 of these pin loca-
tions are used.
A Schrader valve (figure 14 — the car tire type
air valve on the left) on the rear panel provides for
pressurizing the housing with dry nitrogen. This
valve can be used to occasionally add dry nitrogen
as necessary to maintain pressure in the barrel at
about 5 psig (35 kPa). (Note: psig refers to pounds
square inch gauge — which designates pressure
relative to the altitude above sea level at which it is
being measured.)
During shipping, at which times high altitude
might be encountered during aircraft transportation,
a pressure relief valve on the rear panel (figure 14)
may release some pressure. Back at low altitudes
this would be experienced as a housing pressure
below the standard 5 psig (35 kPa). Dry nitrogen
should be added to bring the pressure back up to 5
psig (35 kPa). During normal purging and pressur-
ization, internal pressure should not be allowed to
rise above a 5 to 8 psig (35 to 55 kPa) range to
prevent stress on the seals.
