CPI VZX-6984A4

400W Compact Medium Power Amplifier
for Satellite Communications
The VZX-6984A4
400 Watt TWT
Medium Power
high efficiency in a
compact package.
Provides 400 watts of power in a 3 rack unit
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 applications where space and prime
power are at a premium.
Easy to Maintain
Modular design and built-in fault diagnostic
capability with convenient and clearly visible
indicators behind front panel door for easy
maintainability in the field.
Worldwide Support
Employs a high efficiency dual-depressed
collector helix traveling wave tube backed by
many years of field-proven experience in
airborne and military applications.
Backed by over three decades of satellite
communications experience, and CPI’s worldwide
24-hour customer support network that includes
fourteen regional factory Service Centers.
Simple to Operate
User-friendly microprocessor-controlled
logic with integrated computer interface.
Digital metering, pin diode attenuation and
optional integrated linearizer for improved
intermodulation performance.
Global Applications
Meets International Safety Standard EN-60215,
Electromagnetic Compatibility 89/336/EEC and
Harmonic Standard EN-61000-3-2 to satisfy
worldwide requirements.
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 Compact Medium Power Amplif ier
X -B a n d
• Remote Control Panel
• Redundant and Power
Combined Subsystems
• External Receive Band
Reject Filter
Electrical (continued)
7.9 to 8.4 GHz
Primary Power
Output Power
110 - 240 VAC ±10%,
single phase, 47- 63 Hz
400 W min. (56.02 dBm)
350 W min. (55.44 dBm)
Power Consumption
1.3 kVA, typ.
1.5 kVA, max.
500 MHz
Power Factor
0.95 min.
75 dB min. at rated power output;
78 dB min. at small signal
Environmental (Operating)
RF Level Adjust Range
0 to 20 dB
Gain Stability
±0.25 dB/24hr max.
(at constant drive and temp.)
Small Signal Gain Slope
±0.02 dB/MHz max.
Small Signal Gain Variation
1.0 dB pk-pk max. across any 80 MHz band;
2.5 dB pk-pk max. across the 500 MHz band
Input VSWR
1.3:1 max.
Output VSWR
1.3:1 max.
2.0:1 max. operational; any value for operation
without damage
Residual AM
-50 dBc below 10 kHz
-20[1.3 +log F(kHz)] dBc, 10 kHz to 500 kHz
-85 dBc above 500 kHz
Phase Noise
IESS Phase Noise Profile
AC Fundamental
Sum of All Spurs
-6 dBc
-36 dBc
-47 dBc
AM/PM Conversion
3°/dB max. for a single carrier at
8 dB below rated power
Harmonic Output
-60 dBc at rated power, second and third
Noise and Spurious
(at rated gain)
<- 75 dBW/4 kHz from 7.25 to 7.75 GHz
<-65 dBW/4 kHz from 7.9 to 8.4 GHz
Noise Figure
10 dB max.
-23 dBc or better typ. with two equal carriers
at total output power 7 dB below rated
single-carrier output
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.
not up in the air
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 152, ISSUE 3
Ambient Temperature
-10° to +50°C operating
-40° to +70°C non-operating
Relative Humidity
95% non-condensing
10,000 ft. with standard adiabatic
derating of 2°C/1000 ft., operating;
40,000 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
Acoustic Noise
65 dBA @ 3 ft. from amplifier
Cooling (TWT)
Forced air with integral blower
Rear air intake & exhaust
RF Input Connection
Type N female
RF Output Connection
CPR-112G waveguide flange,
grooved with UNF 2B 8-32
threaded holes
RF Output Monitor
Type N female
Dimensions (W x H x D)
19 x 5.25 x 24 in.
(483 x 133 x 610 mm)
70 lbs (31.8 kg) max.