TSSAP Series
Model 10184
MAGNETIC COMMAND PEDESTAL
 |
The Technical Systems Associates TSSAP Series Model 10184 Magnetic
Command Pedestal is a servo driven single-axis antenna pedestal suitable
for shipboard or severe coastal environments. This pedestal system is configured
to operate in the G-Band frequency range. However, the microwave transmission
line is replaceable so that this unit may be configured to operate in virtually
any frequency. An assortment of horn or dish antennas are available. The
Model 10184 Magnetic Command Pedestal consists of a single-axis rate controlled
pedestal coupled with a digital compass assembly.
The pedestal is a single-axis antenna pedestal equipped with a pulse
width modulated servo drive system and power supply. An integrated slip
ring/rotary joint package provides the means of RF signal routing. An external
control switch allows simplified control of the system modes.
The Model 10184 Magnetic Command Pedestal operates in three modes: magnetic
command, slew, and external error signal input. |
In the magnetic command mode, the servo loop is closed around a servo
compass providing error signals as a function of deviation of the azimuth
axis from a manually set azimuth magnetic bearing. The servo compass is
located on the driven azimuth shaft and rotates with the shaft. It is coupled
to the stationary pedestal base through an internal slip ring assembly contained
within the azimuth shaft. The slip ring is integrated with the RF rotary
joint. This allows continuous rotation of the azimuth shaft. The magnetic
compass will maintain proper bearing for base rotation up to the slew rate
of 5 RPM. The compass may be adjusted while the pedestal is running.
In the slew mode, there are three sub-modes of operation. These are a
fixed rate CCW, a fixed rate CW, and a manually set bi-directional slew.
Selecting CCW slews the azimuth axis at 5 RPM counter clockwise. Likewise,
selecting CW slews the azimuth axis at 5 RPM counter clockwise. Likewise,
selecting CW slews the azimuth axis at 5 RPM clockwise. These are both internally
adjustable over the full slew range.
The manual slew mode is controlled by a 10 turn precision dial potentiometer
located on the side of the azimuth housing. This allows the operator to
continuously vary slew from zero to full slew in either direction.
The EXT mode accepts a bi-polar DC error signal on the input connector
and drives the pedestal proportionally to that signal.
MODEL 10184 System Characteristics
| RF PERFORMANCE(as shown) |
PEDESTAL PERFORMANCE |
| Frequency Range: |
8.6 to 9.7 gHz |
Type: |
Single axis |
| Return Loss: |
>14 dB |
Velocity: |
5 rpm* |
| Insertion Loss: |
<0.1 dB |
Torque Velocity Product |
>600 ft. lbs. -rpm |
| Polarization: |
Horizontal |
Travel: |
Continuous;
CW, CCW |
| Beamwidth: |
10° (AZ); 20° (EL) |
| Elevation Beam Tilt: |
+15° |
Input Voltage: |
24-30 VDC |
| Power Capability: |
200 kW peak
200 W average |
Weight: |
85 lbs. |
| Finish: |
Per customer spec. |
| Pressurization: |
10 psig |
*Other speeds available |
| RF Port: |
WR 112 choke |
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