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Xicom XTRD-270DBS 270W DBS-Band TWTA (Rack Mount)
- 270 Watts DBS-Band (17.3 to 18.4 GHz)
- Power Factor Correction
- Digital Control Interface
- High Efficiency
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Xicom XTRD-270DBS 270W DBS-Band Rack Mount TWTA
The Xicom XTRD-270DBS is a highly efficient
rack mountable traveling wave tube
amplifier (TWTA) designed for fixed and
mobile uplink applications.
XTRD-270DBS Features
- Power Factor Correction
- Digital Display
- Digital Control Interface
- High Efficiency
The unit includes RF gain control, a
solid-state pre-amplifier, RF filters,
cooling, and monitor and control (M&C)
systems.
Rack space is conserved because the
amplifier occupies only 3 rack units (5¼
inches) of a standard 19 inch rack cabinet.
Nominal weight is 50 pounds.
The unit features a menu driven front
panel display and RS-232/422/485 serial
port interfaces for complete computer
control. RF, traveling wave tube, and
default parameters are easily monitored
on the four line front panel display.
Gain control is provided via the front
panel or through the serial interface.
The XTRD-270DBS incorporates high
efficiency, dual stage collector TWTs.
Reliability is enhanced because both
prime power consumption and internal
operating temperatures are reduced for
both the linear and saturated modes of
operation.
The XTRD-270DBS incorporates
power factor correction circuitry, which
minimizes line current distortion and
reduces the required Volt-Amps input.
The automatic features of the high
frequency resonant conversion power
supply include quick recovery from prime
power outages and multiple helix fault
resets (three fault cycles.)
Depending upon user requirements,
this high power amplifier can be
configured for either single thread,
redundant, or phase combined system
operation.
tab 2
| FREQUENCY RANGE |
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17.3 - 18.4 GHz |
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Output Power |
| Traveling Wave Tube |
270 W |
| Rated Power @ Amplifier Flange |
225 W |
Gain |
| Large Signal, minimum |
65 dB |
| Small Signal, minimum |
70 dB |
| Attenuator Range (continuous) |
25 dB |
Maximum SSG Variation Over:
Any narrow band
Full Band |
1.0 dB per 80 MHz
4.0 dB maximum |
| Slope, maximum |
± 0.04 dB/MHz |
| Stability, 24 Hr maximum |
± 0.25 dB |
| Stability, Temperature |
± 1.0 dB maximum over temperature range at any frequency |
Intermodulation
with two equal signals at 4 dB total backoff |
-18 dBc maximum with two equal carriers
at 4 dB total output backoff
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| HARMONIC OUTPUT, maximum |
- 60 dBc |
| AM/PM CONVERSION, maximum |
3.0°/dB at 6 dB below rated output power |
NOISE POWER, maximum
Transmit Band
Receive
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- 70 dBW/4 kHz
- 150 dBW/4 kHz
10.95 to 12.75 GHz
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Group Delay Max over any 80 MHz Bandwidth
Linear
Parabolic
Ripple |
± 0.01 nS/MHz
± 0.005 nS/MHz²
0.5 nS/Pk-Pk
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| RESIDUAL AM NOISE, maximum |
-50 dBc to 10 kHz
- 20 (1.5 + logf) dBc 10 to 500 kHz
- 85 dBc above 500 kHz
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| PHASE NOISE, maximum |
12 dB below IESS phase noise profile
AC fundamental -50 dBc Sum of all spurs -47 dBc
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VSWR
Input, maximum
Output, maximum |
1.3:1
1.3:1 |
Prime Power |
| 180-260 VAC |
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| 47 to 63 Hz, single phase |
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| 1300 VA Maximum |
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| 0.95 Minimum Prime Power Factor |
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Environmental |
| NONOPERATING TEMPERATURE RANGE |
-50° C to + 70° C |
| OPERATING TEMPERATURE RANGE |
-10° C to +50° C |
| HUMIDITY |
Up to 95% Condensing |
| ALTITUDE |
10,000 feet MSL maximum Altitude derating 2°C/1k feet |
| SHOCK AND VIBRATION |
Normal Transportation |
| COOLING |
Forced Air: 250 CFM (typical) |
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