Xicom XT-50, XT-100, XT-80 Operation & Installation Manual
OPERATION AND INSTALLATION MANUAL
XT-50, XT-80 AND XT-100
ANTENNA MOUNT TWT POWER AMPLIFIERS
OPERATION & INSTALLATION MANUAL
XT-50, XT-80, AND XT-100
A
NTENNA-MOUNT TWT POWER AMPLIFIERS
Document No. 802-0111-001
Revision E
September 2001
3550 Bassett Street
Santa Clara, CA 95054
Phone (408) 213-3000 · Fax (408) 213-3001
Notice
Copyright 2001
This document contains propriety information which is protected by copyright. All rights are
reserved.
The information in this document is subject to change without notice.
Xicom Technology reserves the right to revise this publication and to make changes from time
to time in the content hereof without obligation of Xicom Technology to notify any person of
such revision or changes.
Xicom Technology makes no warranty of any kind with regard to this material, including, but
not limited to, the implied warranties of fitness for a particular purpose. Xicom Technology
shall not be liable for errors contained herein or for incidental consequential damages in
connection with the furnishing, performance, or use of this material.
Printing History
EDITION DATE ECO DOCUMENT NUMBER
Edition 5 09/07/01 8861 802-0111-001 Rev. E
Edition4 05/05/01 8374 802-0111-001 Rev. D
Edition 3 02/20/98 802-0000-000 Rev. C
Edition 2 10/97 802-0000-000 Rev. B
Edition 1 07/97 802-0000-000 Rev. A
TABLE OF CONTENTS
1. General Description............................................................................................ 1-1
Overview ............................................................................................................... 1-1
Control and Status Interface................................................................................ 1-2
Performance Specifications.................................................................................. 1-2
2. Installation............................................................................................................ 2-1
Introduction........................................................................................................... 2-1
Unpacking and Inspection................................................................................... 2-1
Mechanical Installation........................................................................................ 2-1
Waveguide Connection.............................................................................. 2-2
Air Ducting.................................................................................................. 2-3
Prime Power Connections................................................................................... 2-3
AC Prime Power, 100 to 260 VAC, Single Phase.............................................. 2-3
Fuses ...................................................................................................................... 2-4
Controller Connections........................................................................................ 2-4
Control and Monitor Interfaces........................................................................... 2-5
Control Interfaces..................................................................................................2-6
Digital Status Circuits........................................................................................... 2-9
Analog Status Circuits........................................................................................ 2-11
Output Voltage Circuits..................................................................................... 2-11
Detected Power Calibration.............................................................................. 2-13
Standard Interconnect Cable............................................................................. 2-13
RF Connectors.....................................................................................................2-16
3. Operation.............................................................................................................. 3-1
General ............................................................................................................. 3-1
Operating Modes..................................................................................................3-1
Heater Delay Mode............................................................................................... 3-1
Heater Standby Mode.......................................................................................... 3-1
Standby Mode....................................................................................................... 3-2
High Voltage ON Mode ....................................................................................... 3-2
Fault Mode............................................................................................................. 3-2
Clearing Faults...................................................................................................... 3-3
Control and Status Signals...................................................................................3-3
Control Signals...................................................................................................... 3-3
Status, Digital........................................................................................................ 3-3
Status, Analog....................................................................................................... 3-4
Initial Turn-On...................................................................................................... 3-5
Pre-Power Check................................................................................................... 3-5
Turn-On Sequence................................................................................................ 3-5
Turn-Off ............................................................................................................. 3-6
XT-50, XT-80, and XT-100 Amplifiers iii
List of Figures
4. Maintenance and Service...................................................................................4-1
Preventative Maintenance...................................................................................4-1
Remove Lower Deck Cover................................................................................. 4-1
Service and Repair................................................................................................ 4-1
Return Authorization...........................................................................................4-2
Re-Shipment..........................................................................................................4-2
1-1 TWT Block Diagram...................................................................................1-1
2-1 Amplifier Outline Drawing.......................................................................2-1
2-2 “Output End”..............................................................................................2-2
2-3 Typical Tightening Pattern........................................................................ 2-3
2-4 Location of Prime Power Connector........................................................2-3
2-5 Connector J2 AC Pinouts...........................................................................2-3
2-6 Location of Fuses.........................................................................................2-4
2-7 Location of Controller Interface Connector J1.........................................2-4
2-8 Interface Connector Pinouts...................................................................... 2-5
2-9 Internal Supply Control Circuits...............................................................2-7
2-10 External Supply Control Circuits.............................................................. 2-8
2-11 Digital Status Circuit Isolation.................................................................. 2-9
2-12 TWT Temperature: Temperature vs. Voltage......................................2-12
2-13 Detected Power Calibration.....................................................................2-13
2-13 Interconnect Cable....................................................................................2-14
2-14 Interface Cable “D” Connector Pinouts................................................. 2-15
List of Tables
1-1 Models Available........................................................................................1-1
1-2 C-Band Performance Specifications.........................................................1-3
1-3 X-Band Performance Specifications..........................................................1-4
1-4 Ku-Band Performance Specifications.......................................................1-5
1-5 Environmental Specifications, All Models...............................................1-6
1-6 Interface Specifications, All Models.........................................................1-6
iv XT-50, XT-80, and XT-100 Amplifiers
High Voltage Hazards
This amplifier utilizes high voltage that can be lethal if contacted. The amplifier should not be
operated without its cover unless you are thoroughly familiar with its operation and are experienced
with high voltage.
RF Radiation Hazards
Prior to operation of the TWTA, ensure that all microwave connections are securely fastened. Check
that there is no microwave leakage from them. Never operate the amplifier with an open waveguide.
This amplifier is capable of generating high power microwave radiation, which can cause bodily
harm.
Safety Summary
Equipment of this nature has inherent hazards. Operator or service technicians should have training
on the XT-50, XT-80, or XT-100 power amplifiers. When the amplifier’s cover is removed, the high
voltage power supply for the TWT has multiple exposed high voltage points. Use extreme care when
operating the amplifier with its cover removed.
XT-50, XT-80, and XT-100 Amplifiers v
CHAPTER 1: GENERAL DESCRIPTION
Overview
This operation manual discusses Xicom Technology antenna-mount power amplifiers with power
levels ranging from 50 Watts to 170 Watts. These antenna-mount units are designed for outdoor
mounting directly to an antenna structure. The standard components of each amplifier include: a
Traveling Wave Tube (TWT), an integral high voltage power supply, and a forced air cooling system.
For a brief product description and typical block diagram, see the table and figure below.
Model Name Frequency Range Band Rated Power @ HPA Flange
XT-50C 5.85 to 6.425 GHz C-Band 50 Watts
XT-100C 5.85 to 6.425 GHz C-Band 140 Watts
XT-50X 7.9 to 8.4 GHz X-Band 50 Watts
XT-100X 7.9 to 8.4 GHz X-Band 125 Watts
XT-50K 14.0 to 14.5 GHz Ku-Band 50 Watts
XT-80K 14.0 to 14.5 GHz Ku-Band 70 Watts
XT-100K 13.75 to 14.5 GHz Ku-Band 100 Watts
Table 1-1 Models Available
XT-50, XT-80, and XT-100 Amplifiers General Description 1-1
Figure 1-1 TWT Block Diagram
Control and Status Interface
The XT-50, XT-80, and XT-100 amplifiers are externally controlled. These amplifiers do not include any
control switches or status indicators for operator use. The external control and status indicator
interfaces are detailed in Chapter 2 of this manual.
Performance Specifications
The performance specifications of the C-Band, X-Band, and Ku-Band models are shown in Tables 1-2, 13, and 1-4 respectively. Environmental specifications for all models are summarized in Table 1-5.
Interface specifications are shown in Table 1-6.
1-2 General Description XT-50, XT-80, and XT-100 Amplifiers
Table 1-2 C-Band Performance Specifications
Parameter XT-50C Specifications XT-100C Specifications
FREQUENCY RANGE 5.850 GHz to 6.425 GHz 5.850 GHz to 6.425 GHz
OUTPUT POWER TWT
@ Amplifier Flange
GAIN, Small Signal, Minimum 45 dB 46 dB
GAIN, Large Signal, Minimum 40 dB 40 dB
GAIN VARIATION, SSG
Narrow Band, Maximum
1.5 dB over any 40 MHz band
Full Band, Maximum
GAIN SLOPE, Maximum
GAIN STABILITY IN ANY 24
HOUR PERIOD, Maximum
GAIN STABILITY OVER
TEMPERATURE
INTERMODULATION WITH
TWO EQUAL SIGNALS
±1.0 dB maximum over operating
temperature range at any frequency
-18 dBc maximum with two equal carriers
at 4 dB total output backoff
HARMONIC OUTPUT,
Maximum -60 dBc -60 dBc
AM TO PM CONVERSION,
Maximum
2.5°/dB at 6 dB below rated power 2.5°/dB at 6 dB below rated power
NOISE POWER
Transmit Band, Maximum
Receive Band, Maximum
GROUP DELAY, Maximum
Bandwidth
Linear
Parabolic
Ripple
RESIDUAL AM NOISE,
Maximum
-20 (1.5+logf) dBc 10 to 500 KHz
-85 dBc above 500 KHz
PHASE NOISE, Maximum 10 dB below IESS phase noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
VSWR, Maximum
Input
Output
55 Watts
50 Watts
170 Watts
140 Watts
1.0 dB over any 40 MHz band
2.5 dB
2.5 dB
±0.04 dB/MHz ±0.04 dB/MHz
±0.25 dB ±0.25 dB
±1.0 dB maximum over operating
temperature range at any frequency
-18 dBc maximum with two equal
carriers at 4 dB total output backoff
-70 dBw/4 KHz
-150 dBw/4 KHz
3.7 GHz to 4.2 GHz
Any 40 MHz
0.01 nS/MHz
0.005 nS/MHz
2
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-80 dBw/4 KHz
-160 dBw/4 KHz
3.7 GHz to 4.2 GHz
Any 40 MHz
0.01 nS/MHz
0.005 nS/MHz
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-20 (1.5+logf) dBc 10 to 500 KHz
-85 dBc above 500 KHz
10 dB below IESS phase noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
1.3:1
2.2:1
1.3:1
2.2:1
2
XT-50, XT-80, and XT-100 Amplifiers General Description 1-3
Table 1-3 X-Band Performance Specifications
Parameter XT-50X Specifications XT-100X Specifications
FREQUENCY RANGE 7.90 GHz to 8.40 GHz 7.90 GHz to 8.40 GHz
OUTPUT POWER, TWT
@ Amplifier Flange
GAIN, Small Signal, Minimum 53 dB 46 dB
GAIN, Large Signal, Minimum 49 dB 40 dB
GAIN VARIATION, SSG
Narrow Band, Maximum
1.3 dB over any 40 MHz band
Full Band, Maximum
GAIN SLOPE, Maximum
GAIN STABILITY IN ANY 24
HOUR PERIOD, Maximum
GAIN STABILITY OVER
TEMPERATURE
INTERMODULATION WITH
TWO EQUAL SIGNALS
±1.0 dB maximum over operating
temperature range at any frequency
-18 dBc maximum with two equal carriers
at 4 dB total output backoff
HARMONIC OUTPUT,
Maximum -60 dBc -60 dBc
AM TO PM CONVERSION,
Maximum
2.5°/dB at 6 dB below rated power 2.5°/dB at 6 dB below rated power
NOISE POWER
Transmit Band, Maximum
Receive Band, Maximum
GROUP DELAY, Maximum
Bandwidth
Linear
Parabolic
Ripple
RESIDUAL AM NOISE,
Maximum
-20 (1.5+logf) dBc 10 to 500 KHz
-85 dBc above 500 KHz
PHASE NOISE, Maximum 10 dB below IESS phase noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
VSWR, Maximum
Input
Output
55 Watts
50 Watts
140 Watts
125 Watts
1.0 dB over any 40 MHz band
2.5 dB
2.5 dB
±0.04 dB/MHz ±0.04 dB/MHz
±0.25 dB ±0.25 dB
±1.0 dB maximum over operating
temperature range at any frequency
-18 dBc maximum with two equal
carriers at 4 dB total output backoff
-70 dBw/4 KHz
-70 dBw/4 KHz
7.25 - 7.75 GHz
Any 40 MHz
0.01 nS/MHz
0.005 nS/MHz
2
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-80 dBw/4 KHz
-80 dBw/4 KHz
7.25 - 7.75 GHz
Any 40 MHz
0.01 nS/MHz
0.005 nS/MHz
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-20 (1.5+logf) dBc 10 to 500 KHz
-85 dBc above 500 KHz
10 dB below IESS phase noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
1.3:1
2.2:1
1.3:1
2.2:1
2
1-4 General Description XT-50, XT-80, and XT-100 Amplifiers
Table 1-4 Ku-Band Performance Specifications
Parameter XT-50K XT-80K XT-100K
FREQUENCY RANGE 14.0 GHz to 14.5 GHz 14.0 GHz to 14.5 GHz 13.75 GHz to 14.5 GHz
OUTPUT POWER, TWT
@ Amplifier Flange
55 Watts
50 Watts
GAIN, Small Signal, Minimum
53 dB 50 dB 46 dB
GAIN, Large Signal, Minimum
49 dB 46 dB 40 dB
GAIN VARIATION, SSG
Narrow Band, Maximum
Full Band, Maximum
GAIN SLOPE, Maximum
1.3 dB per 80 MHz
2.5 dB
±0.04 dB/MHz ±0.04 dB/MHz ±0.04 dB/MHz
GAIN STABILITY IN ANY 24
HOUR PERIOD, Maximum
GAIN STABILITY OVER
TEMPERATURE
±1.0 dB maximum over
±0.25 dB ±0.25 dB ±0.25 dB
operating temperature
range at any frequency
INTERMODULATION WITH
TWO EQUAL SIGNALS
-18 dBc maximum with
two equal carriers at 4 dB
total output backoff
HARMONIC OUTPUT,
-60 dBc -60 dBc -60 dBc
Maximum
AM TO PM CONVERSION
Maximum
2.5°/dB at 6 dB below
rated power
NOISE POWER
Transmit Band, Maximum
Receive Band, Maximum
-70 dBw/4 KHz
-150 dBw/4 KHz
10.95 GHz to 12.75 GHz
GROUP DELAY, Maximum
Bandwidth
Linear
Parabolic
Ripple
RESIDUAL AM NOISE,
Maximum
Any 80 MHz
0.01 nS/MHz
0.005 nS/MHz
2
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-20 (1.5+logf) dBc 10 to
500 KHz
-85 dBc above 500 KHz
PHASE NOISE, Maximum 10 dB below IESS phase
noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
VSWR, Maximum
Input
Output
1.3:1
2.2:1
80 Watts
70 Watts
1.3 dB per 80 MHz
2.5 dB
±1.0 dB maximum over
operating temperature
range at any frequency
-18 dBc maximum with
two equal carriers at 4 dB
total output backoff
2.5°/dB at 6 dB below
rated power
-70 dBw/4 KHz
-150 dBw/4 KHz
10.95 GHz to 12.75 GHz
Any 80 MHz
0.01 nS/MHz
0.005 nS/MHz
2
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-20 (1.5+logf) dBc 10 to
500 KHz
-85 dBc above 500 KHz
10 dB below IESS phase
noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
1.3:1
2.2:1
125 Watts
100 Watts
1.0 dB per 80 MHz
2.5 dB
±1.0 dB maximum over
operating temperature
range at any frequency
-18 dBc maximum with
two equal carriers at 4 dB
total output backoff
2.5°/dB at 6 dB below
rated power
-80 dBw/4 KHz
–160 dBw/4 KHz
10.95 GHz to 12.75 GHz
Any 80 MHz
0.01 nS/MHz
0.005 nS/MHz
2
0.5 nS/Pk-Pk
-50 dBc to 10 KHz
-20 (1.5+logf) dBc 10 to
500 KHz
–85 dBc above 500 KHz
10 dB below IESS phase
noise profile
AC fundamental -50 dBc
Sum of all spurs -47 dBc
1.3:1
2.2:1
XT-50, XT-80, and XT-100 Amplifiers General Description 1-5
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