400W Outdoor TWT Amplifier
for Satellite Communications
X- Band
The T04XO Series
X- Band
400 Watt TWT
Amplifier — high
efficiency in an
environmentally sealed
compact package
designed for outdoor
Easy to Maintain
Provides 400 watts of power in a rugged and
compact weatherproof package, digital ready,
for wideband, single- and multi-carrier satellite
service in the 7.9 - 8.4 GHz frequency band.
Ideal for transportable and fixed earth station
Modular design and built-in fault diagnostic
capability via remote monitor and control.
Cost Effective and Efficient
Mounting at the antenna improves performance
through minimized cable losses and saves cost in
system design. Employs a high efficiency, dualdepressed collector helix traveling wave tube
reducing operating costs.
Global Applications
Meets International Safety Standard EN-60215,
Electromagnetic Compatibility 2004/108/EC
and Harmonic Standard EN-61000-3-2 to satisfy
worldwide requirements.
Worldwide Support
Backed by over three decades of satellite
communications experience, and CPI’s worldwide
24-hour customer support network that includes
sixteen regional factory service centers.
Designed and built to survive in extremely
adverse environmental conditions and features
increased cooling margin for longer life.
Simple to Operate
User-friendly microprocessor-controlled logic
with integrated RS422/485 computer interface.
Digital metering, pin diode attenuation and
optional integrated linearizer for improved
intermodulation performance.
811 Hansen Way
P.O. Box 51625, Palo Alto, CA 94303
tel: +1 (650) 846-3803
fax: +1 (650) 424-1744
e-mail: [email protected]
400W Outdoor TWT Amplif ier
Plays in the Rain
X -B a n d
7.9 - 8.4 GHz
Output Power
400 W min. (56.02 dBm)
350 W min. (55.44 dBm)
500 MHz
46 dB min. at rated power output
(70 dB with SSIPA)
52 dB min. at small signal
(75 dB with SSIPA)
• Remote Control Panel
• Integrated 1:1 Switch
Control and Drive
Electrical (continued)
Group Delay
(in any 40 MHz band)
0.01 ns/MHz linear max.
0.001 ns/MHz 2 parabolic max.
0.5 ns pk-pk ripple max.
Primary Power
90-264 volts AC,
single phase 47-63 Hz
Power Consumption
1350 W typ.
1500 W max.
Power Factor
0.95 min.
Environmental (Operating)
Gain Stability
Ambient Temperature
At constant drive and temp. ±0.25 dB/24hr max. (after 30 min. warmup)
Over temp. constant drive
±1.0 dB over operating temp. range (any freq.);
±0.75 dB over ±10°C
Relative Humidity
Small Signal Gain Slope
±0.02 dB/MHz max. (±0.04 dB/MHz max.
with BUC option)
• Redundant and Power
Combined Subsystems
• SSIPA with Variable
Attenuator (provides
typical RF Level Adjust
Range of 0 to 30 dB)
Small Signal Gain Variation
• Integral Linearizer
(Requires SSIPA option)
RF Level Adjust Range
1.0 dB pk-pk across any 40 MHz band;
2.5 dB pk-pk across the 500 MHz band
4.0 dB pk-pk across 500 MHz with linearizer
4.5 dB pk-pk across 500 MHz with BUC
-40°C to +55°C operating,
including solar loading;
-40°C to +75°C non-operating
100% condensing
10,000 ft. with standard adiabatic
derating of 2°C/1000 ft., operating;
50,000 ft., non-operating
Shock and Vibration
Designed for normal transportation
environment per Section 514.4
MIL-STD-810E. Designed to
withstand 20G at 11 ms (1/2
sine pulse) in non-operating
0 to 30 dB typ. (SSIPA option required)
• L-Band Block
Upconverter (BUC --requires SSIPA)
Attenuator Step-Size
0.1 dB (SSIPA option required)
Input VSWR
1.3:1 max. (1.5:1 max. with BUC)
Output VSWR
1.3:1 max.
Acoustic Noise
65 dBA @ 3 ft. from amplifier
• Forward Power
Detection Over CIF
2.0:1 max. continuous operation;
any value for operation without damage
Heat Dissipation
1100 W max.
-50 dBc below 10 kHz
-20[1.5 +log F (kHz)] dBc,
10 kHz to 500 kHz
-85 dBc above 500 kHz
Cooling (TWT)
Forced air with integral blower
RF Input Connection
Type N female
RF Output Connection
CPR-112 G waveguide flange,
grooved with UNC 2B 10-32
threaded holes
RF Output Monitor
Type N female
Dimensions (W x H x D)
10.25 x 10.5 x 20.5 in.
(260 x 267 x 521 mm)
55 lbs (25.0 kg) with
no options, max.
Residual AM
• Ethernet Interface
Phase Noise
12 dB below mask (3 dB below with BUC)
phase noise continuous
AC fundamentals related
-50 dBc (-33 dBc with BUC)
Sum of spurs (370 Hz to 1 MHz) -47 dBc (-39 dBc with BUC)
AM/PM Conversion
2.5°/dB max. for a single carrier at
7 dB below rated power (2.5°/dB max. at
3 dB below rated with linearizer)
Harmonic Output
-60 dBc at rated power
Noise and Spurious
(at rated gain)
<-70 dBW/4 kHz, passband
<-70 dBW/4 kHz, 7.25 to 7.75 GHz
-24 dBc max. with two equal carriers
at total output power 7 dB (4 dB with
optional integral linearizer) below rated
single-carrier output
Certificate Number: 30515
For more detailed information, please refer to the corresponding CPI Technical Description.
Note: Specifications may change without notice as a result of additional data or product refinement.
Please contact CPI before using this information for system design.
MKT 129, ISSUE 7