Technical Characteristics OPM-2
GENERAL
The OPM-2 tracking and re-pointing mount is destined for offset antennas of up to 2.4 m in diameter. Often the system is employed in conjunction with a Prodelin 1251 or 1241 antenna, but other antennas can be accommodated with no or very little adaptation, as long as the offset angle is around 22° (±5°).
Mount type: Dual-axis motorized polar mount, fully counter balanced
Material: Hot-dip galvanized steel with stainless steel accessories
Antenna: 2.4m Prodelin Model 1251 (or similar), C- and Ku-band
Fixation: NP-mount or concrete base with mast as for original 1251.
System Controller: Self contained enclosure on mast, with RJ-45 IP connection.
FUNCTIONALITY
Azimuth Pointing : -85° / +30°, -55° / +55°, -30° / +85° (in-field selectable)
Inclined Tracking: Instantaneous for all satellites in view, up to 10° inclination
Pointing Error: Typically better than ± 0.2° under all conditions
Deployment Area: Anywhere within ± 80° Latitude
Power Recovery: Fully automatic, warm start 20 sec, cold start approx. 3min
In most cases a warm start will be made. Only if the power failure occurred when one of the motors was moving, a cold start will be made.
Real-time Clock: Accuracy better than ± 1 sec over lifetime (GPS controlled)
ACTUATORS
Type: Linear Ball-Screw Actuators with electric brake release
Motors: 48VDC – maximum 350W
Linear Speed: Nominally 12 mm/s, reduced by control electronics
Linear Force: Typical 8000N
Protection Class: IP-55 re-enforced
ENVIRONMENTAL
Temperature: -20°to +40°
Windload: As for original antenna
Design Lifetime: Minimum 15 years
POWER
Supply voltage: 230VAC, 50-60 Hz
Rating: 350W when in motion (max 1% of time) – 20W when stationary
