Norsat Atombka025 User manual

2021-11-02 039092 Rev D 1

ATOM Ka 25/40W/50W BUC & SSPA

USER MANUAL

ATOM Ka 25/40W/50W BUC & SSPA

2021-11-02 039092 Rev D 2

Operator’s Manual

The information in this document has been fully reviewed and is believed to be entirely reliable. However,

Norsat International Inc., hereinafter referred to as Norsat, reserves the right to modify any products to

improve reliability, function, or design. Norsat does not assume any liability arising out of the application or

use of any product or circuit described herein. Norsat does not convey any license under its patent rights

or the rights of others.

Technical Support

This manual provides engineers with information necessary to operate the applicable system. Technical

support is available from Norsat.

Norsat International Inc.

Attn: Technical Support

110 –4020 Viking Way

Richmond, BC

Main: 1 (604) 821-2800

Support: 1 800 644 4562

[email protected]om

2021-11-02 039092 Rev D 3

Table of Contents

USER MANUAL.......................................................................................................................... 1

ATOMKa25/40W/50WBUC&SSPA............................................................................................ 1

Operator’s Manual.............................................................................................................. 2

Technical Support .............................................................................................................. 2

1.1 OVERVIEW.............................................................................................................. 7

1.2 FEATURES.............................................................................................................. 8

1.3 Absolute Maximum Ratings...................................................................................... 9

1.4 SAFETY..................................................................................................................10

2.1 INTRODUCTION.....................................................................................................11

2.2 J1 & J6–Inputs and Grounding...............................................................................14

2.3 J3 –DC Power........................................................................................................14

2.4 J2 –Monitor and Control Interface...........................................................................15

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2.5 Serial Port Software Interface..................................................................................20

2.6 Ethernet Interface (ATOMControl™ Web Interface) ................................................25

2.7 Ground Connection.................................................................................................26

2.8 Ground Connection.................................................................................................27

2.9 Fault Indicator / LED................................................................................................27

3.1 ATOM INSTALLATION............................................................................................28

3.2 Fans & Baseplate Cooling.......................................................................................28

3.3 Accessories.............................................................................................................28

3.4 General Specifications.............................................................................................28

3.5 Standard Warranty..................................................................................................29

 
© Norsat International Inc. (“Norsat”) All Rights Reserved 
2021-11-02 039092 Rev D 5
List of Figures 
 
Figure 2-1 Input Connections for ATOM Ka 25W/40W BUC Unit (N-Type Jack Shown)....11 
Figure 2-2 Input Connections for ATOM Ka 25W/40W SSPA Unit.....................................11 
Figure 2-3 Input Connections for ATOM Ka 50W BUC Unit (N-Type Jack Shown)............12 
Figure 2-4 Input Connections for ATOM Ka 50W SSPA Unit.............................................12 
Figure 2-5 Standard Waveguide Output for ATOM Ka 25W/40W units..............................13 
Figure 2-6 Standard Waveguide Output for ATOM Ka 50W units......................................13 
Figure 2-7: DC Unit J3 Connector Pinout ..........................................................................15 
Figure 2-8: J2 M&C Connector Pin Arrangement...............................................................16 
Figure 2-9: RJ-45 Plug Pinout ...........................................................................................19 
Figure 2-10: Setup Serial Port...........................................................................................20 
Figure A-3-1: 25W/40W Ka BUC/SSPA, Fan Cooled ........................................................30 
Figure A-3-2: 25W/40W Ka BUC/SSPA, Baseplate Cooled...............................................31 
Figure A-3-3: 50W Ka BUC/SSPA, Fan Cooled.................................................................32 
Figure A-3-4: 50W Ka BUC/SSPA, Baseplate Cooled.......................................................33 
 

 
© Norsat International Inc. (“Norsat”) All Rights Reserved 
2021-11-02 039092 Rev D 6
List of Tables 
 
Table 1-1: Input and Output ....................................................................................................... 8 
Table 1-2: Absolute Maximum Ratings....................................................................................... 9 
Table 2-1: DC Unit J3 Connector Pinout ...................................................................................15 
Table 2-2: M&C Interface Options.............................................................................................16 
Table 2-3: J2 Pinouts for ATOM Configurations........................................................................17 
Table 2-4: ATOM Mute Control Behavior ..................................................................................18 
Table 2-5: Ethernet Cable Pinout..............................................................................................19 
Table 2-6: Fault Trip and Reset Points......................................................................................21 
Table 2-7: DAT Value vs. Attenuation in dB..............................................................................22 
Table 2-8: Commands Summary ..............................................................................................24 
Table 3-1: General 25-50W ATOM Specifications.....................................................................29 
Table B-3-1: Acronyms and Abbreviations................................................................................34 
 
 
 

2021-11-02 039092 Rev D 7

Introduction

1.1 OVERVIEW

This operator’s manual applies to all ATOM SSPAs and BUCs with the following marketing numbers:

ATOMSKAxxx (25-50W)

ATOMBKAxxx (25-50W)

ATOM-100060 (40W)

This includes any ATOM that uses the 25-50W (Psat) Ka Commercial Band (29.0-30.0 GHz), Military Band

(30.0-31.0 GHz), Dual Band (29.0-30.0 GHz / 30.0-31.0 GHz) or Specific Bands. This also includes the

ATOM-100060 (Ka 40W BUC) as specified.

SSPA - Solid State Power Amplifier

If this unit is a SSPA, the RF input signal is amplified to the specified power.

BUC - Block Up Converter and Amplifier

If this unit is a BUC, the IF input signal is upconverted to Ka-Band RF frequencies and then amplified to the

specified power.

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1.2 FEATURES

Inputs and Outputs

Table 1-1: Input and Output

25-50W

Input Type

Female N-Type Connector (BUC)

Female K-Type Connector (SSPA)

Output Type

Waveguide WR28 (standard)

Electrical Interface

M&C Connector –a ten-pin connector is used to interface with a host computer. See Section 2.4 J2 –

Monitor and Control Interface for detailed description of the pinouts.

Power Connector –DC Units use a four-pin connector to provide power to the ATOM. See Section 2.3 J3

–DC Power for detailed description of pinouts.

Ground Terminal –a #10-32 screw is used to ground the chassis during use.

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1.3 Absolute Maximum Ratings

Table 1-2: Absolute Maximum Ratings

Parameter

Rating

IF/RF Input Power

BUC: -30dBm (Digital Attenuator set to 0dB)

SSPA: -20dBm

RF Output Power

ATOMBKA025 / ATOMSKA025: 44dBm

ATOMBKA050 / ATOMSKA050: 47dBm

DC Input Voltage

+56V

DC Input Current

ATOMBKA025 / ATOMSKA025: 14.8A

ATOMBKA050 / ATOMSKA050: 28A

Mute Control Voltage

+5V

Baseplate Temperature

75 °C

2021-11-02 039092 Rev D 10

1.4 SAFETY

W A R N I N G

Leakage Current

The ATOM may exhibit high leakage current during use. Ensure

that the ground terminal is grounded according to local

electrical codes prior to powering on the ATOM.

W A R N I N G

RF Radiation Hazard

The ATOM emits high power RF energy which is harmful to the

human body. Do not operate ATOM unless the RF output flange

is either terminated in an RF load (100W min) or connected to

the feed of a terminal.

Do not obstruct the RF output or feed output with any body part.

W A R N I N G

Do not allow equipment to be standing in water.

While the BUC/SSPA is designed to be used outdoors, the

equipment is not designed to operate in standing water. Failure

to follow this precaution could result in electric shock and injury

to persons.

C A U T I O N

Do not allow any items to fall into the unit from the waveguide

opening.

C A U T I O N

Apply voltage to the AC/DC input connector only as specified in

the original configuration of this unit. Application of a voltage

outside the specified range may cause the unit to become

damaged or non-functional.

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Interface Control

2.1 INTRODUCTION

The unit has three connectors on the input side of the housing and one waveguide port on the output side.

The interface for these connectors is detailed in this document.

On the input side, there are the following connectors:

•J1 –IF or RF Input; N-Type Jack for BUC; K-Type Jack for SSPA

•J2 –Ten-pin circular connector for M&C

•J3 –Four-pin circular DC power connector

•J6 –Ground terminal

Figure 2-1 Input Connections for ATOM Ka 25W/40W

BUC Unit (N-Type Jack Shown)

Figure 2-2 Input Connections for ATOM Ka 25W/40W

SSPA Unit

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Figure 2-3 Input Connections for ATOM Ka 50W BUC

Unit (N-Type Jack Shown)

Figure 2-4 Input Connections for ATOM Ka 50W SSPA

Unit

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On the output side, there is one connector:

•J4 –WR28 waveguide RF output

Figure 2-6 Standard Waveguide Output for ATOM Ka 50W

units

Figure 2-5 Standard Waveguide Output for

ATOM Ka 25W/40W units

2021-04-23 039092 Rev C 14

2.2 J1 & J6–Inputs and Grounding

J1 –IF/RF Input

BUC

The IF input connector is a 50 ohm coaxial connector (N or optional SMA Type). The external/internal

reference mode is auto-selected. If an external reference signal is applied, the BUC will switch to external

reference mode. In the absence of external reference signal, the BUC will switch to internal reference mode.

The IF input has a digital attenuator integrated, which allows the user to reduce BUC’s gain level and

increase maximum IF input power. Default attenuation is set to0dB, see Table 2-8: Commands Summary.

for more information about getting and setting attenuation values.

The power level of input IF signal should not exceed the absolute maximum rating in Table 1-2. The

connector is DC-blocked, and appears as a 50 ohm load at IF. Do not exceed ±50 VDC on this port.

SSPA

In the SSPA-only configuration, this is the RF input. It is a K-Type connector, with performance to 40 GHz.

No external reference is required for SSPA-only operation.

J6 –Ground Terminal

A #10–32 screw and lock washers are used to ground ATOM. Ensure the unit to be grounded by a skilled

person according to national and local electrical codes before use.

2.3 J3 –DC Power

The 25W, 40W & 50W ATOM Ka power input typically requires 18V to 56V DC power. Refer to specific

configuration of the unit for the exact voltage range. Each ATOM is supplied with a mating connector for

the power interface. Only instructed person may provide connection to the supplied connector per

instructions below.

DC power is supplied through a four-pin type cylindrical connector. Two pins are used to deliver the positive

connection and two pins are used for the negative connection to reduce resistance. The negative

connection is internally connected to chassis ground. The negative power connection may alternatively be

applied directly to the ground screw terminal on the aluminum housing.

Connector Type

The J3 connector for the DC input is a four-pin miniature circular connector. This connector is a MIL-C-

26482 Series 1 receptacle, shell size 12, 4 pin (Amphenol®58-533723-4P). The connector is a receptacle

2021-04-23 039092 Rev C 15

with pins and requires the mating connector to be a plug with sockets (e.g Amphenol®PT06E-12-4S-SR).

A range of plug-compatible mating connectors may be used to add options to the plug such as right-angle,

stress relief clamp, metal color/finish, etc. Please contact the connector manufacturer for more information

and/or refer to the Amphenol®catalog 12-070. Ensure the supply cable is capable of supplying at least

300W of power (for 25W ATOM Ka) or 600W of power (for 50W ATOM Ka).

DC Unit J3 Connector Pinouts

Figure 2-7: DC Unit J3 Connector Pinout

Table 2-1: DC Unit J3 Connector Pinout

Name

V-/Ground

V+

V-/Ground

For the DC input, the positive terminals are pins B/C and the negative terminals are pins A/D. Pins A and

D are connected to case ground internally; pins B and C are connected internally. It is recommended to

apply the supply voltage evenly to both pairs of pins to evenly share the current among both sets of

wires/pins.

The internal capacitance between the V+ and V- terminals is approximately 120 microfarads.

2.4 J2 –Monitor and Control Interface

The M&C interface is used to control the unit with a host computer. All on-board sensors are accessed

through this interface. Use of this connection is optional. Each ATOM is supplied with a mating connector

for the M&C interface.

The 25-50W ATOM can be ordered with standard or Ethernet web interface options. Table 2-2 summarizes

the M&C interface protocols available with each option.

2021-04-23 039092 Rev C 16

Table 2-2: M&C Interface Options

Orderable Option

Communication Interfaces

RS-485

RS-232

Web

Interface

Standard

Ethernet Option

Monitor and Control Interface Pinout

The M&C interface is a ten-pin miniature circular connector. This connector is a MIL-C-26482 Series 1

receptacle, shell size 12, 10 pin (Amphenol® part number 58-533723-10P). A mating connector is

Amphenol® part number PT06E-12-10S-SR. A range of compatible part numbers for the mating connector

may be used to add options to the plug such as right-angle, stress relief clamp, metal color/finish, etc.

Please contact the connector manufacturer for more information and/or refer to Amphenol® catalog 12-

070.

Figure 2-8: J2 M&C Connector Pin Arrangement

Table 2-3: J2 Pinouts for ATOM Configurations summarizes the various pinout options for the 25-50W

ATOM Ka. Note that the pin function varies according to the M&C interface option that the ATOM was

ordered with. The M&C interface option cannot be changed by the user.

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Table 2-3: J2 Pinouts for ATOM Configurations

Connect

or Pin

Standard

Configur

ation

Ethernet

Configura

tion

Signal Description

RS-485

Tx-

RS-485

Tx-

Host computer Tx- signal (signal into unit)

RS-485

Tx+

RS-485

Tx+

Host computer Tx+ signal (signal into unit)

RS-485

Rx+

RS-485

Rx+

Host computer Rx+ signal (signal out of unit)

Mute

Controls Muting of Amplifier

Eth Rx+

Ethernet host computer Rx+ signal (signal out of unit)

RS-232

RS-232 host computer Rx signal (signal out of unit)

Eth Tx+

Ethernet host computer Tx+ signal (signal into unit)

RS-232

RS-232 host computer Tx signal (signal into of unit)

GND

Ground reference for Ethernet/RS-485/RS-232 signals. This is

internally connected to case ground.

Eth Rx-

Ethernet host computer Rx- signal (signal out of unit)

RS-485

Rx-

RS-485

Rx-

Host computer Rx- signal (signal out of unit)

Eth Tx-

Ethernet host computer Tx- signal (signal into unit)

Ground Pin(s): Pin G

Ground/shield for Ethernet, RS-485, RS-232 & Mute signals. This is internally connected to the case

ground. Do not exceed 100mA.

Mute Control: Pin D

This pin controls the hardware mute state of the ATOM. When muted, the power transistors are turned off,

reducing power consumption and providing an RF output noise close to the thermal noise floor.

The operation of this pin is fully configurable through the M&C Interface. Pin D can be biased with either

an internal Pull-Down (to 0V) or an internal Pull-Up (to 4V). Pin D is also configurable to be either active

high (3-5V on Pin D will mute the unit) or active low (0-0.8V on Pin D will mute the unit). All voltages are

relative to Pin G or the Case Ground.

Because of the configurable pull-down / pull-up resistor, the unit can be configured to be active (i.e. not

muted) when Pin D is left floating. Therefore, it is possible to operate the unit with no connection pin D.

2021-04-23 039092 Rev C 18

The ATOM mute control behavior is shown below in Table 2-4: ATOM Mute Control Behavior. Note that

the ATOM may be factory ordered with alternate configurations, so the Default configuration shown in the

table is not reflective of all ATOM units.Interface Control

Table 2-4: ATOM Mute Control Behavior

Configuration

Mute Line

Polarity

Mute

Line

Bias

Sample

Input 1

Sample

Mute State

Sample

Input 2

Sample

Mute State

Sample

Input 3

Sample

Mute State

Default

0V =

Unmute

Pull-

Down

Unmuted

Muted

Floating

Unmuted

Sample 1

0V =

Unmute

Pull-Up

Unmuted

Muted

Floating

Muted

Sample 2

5V =

Unmute

Pull-

Down

Muted

Unmuted

Floating

Muted

Sample 3

5V =

Unmute

Pull-Up

Muted

Unmuted

Floating

Unmuted

Note that the ATOM mute state can also be controlled through the M&C interface. The software

mute setting takes priority over the hardware pin. Refer to 2.5 for details.

RS-485 Port: Pins A, B, C, J

These four pins form a standard RS-485 port, with RX+, RX-, TX+, TX-. Use Pin G as the ground reference

for this port.

TX+ and TX- are the differential pair which carries a signal from the host computer to the unit. RX+ and RX-

are the differential pair which carries a signal from the unit to the host computer. Ensure these are

connected to the host computer RS-485 port accordingly.

•A

TX- (RS-485)

Host computer TX- signal (signal into unit)

•B

TX+ (RS-485)

Host computer TX+ signal (signal into unit)

•C

RX+ (RS-485)

Host computer RX+ signal (signal out of unit)

•J

RX- (RS-485)

Host computer RX- signal (signal out of unit)

RS-232 Port: Pins E, F, & G

These pins form a standard RS-232 serial port. Pin F carries a signal from the host computer to the unit

and Pin E carries a signal from the unit to the host computer. Pin G must be connected to the ground pin

on the host computer.

2021-04-23 039092 Rev C 19

Ethernet Interface: Pins E, F, H, & K

These four pins form a standard 10/100Mbps Ethernet link. Table 2-5 and Figure 2-9 summarize how to

construct an Ethernet M&C cable to access the web interface.

Table 2-5: Ethernet Cable Pinout

ATOM

Connector

Twisted Pair

Cable

RJ-45

Connector

Description

Wht/Grn

Ethernet host computer Tx+ signal (signal into unit)

Grn

Ethernet host computer Tx- signal (signal into unit)

Wht/Org

Ethernet host computer Rx+ signal (signal out of

unit)

Blu

Wht/Blu

Org

Ethernet host computer Rx- signal (signal out of

unit)

Wht/Brn

Brn

Figure 2-9: RJ-45 Plug Pinout

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2.5 Serial Port Software Interface

Communications to and from the serial interface is character based. Use any standard “Terminal” program

with setup parameters as shown in Figure 2-10.

Figure 2-10: Setup Serial Port

Controller Responses

The unit will only generate messages in response to a command. Each command received will result in a

single message reply, which may simply be an Acknowledge message.

In general, command responses are returned immediately, though the precise command-response delay

varies slightly based on the specific command.

Message Definitions

getident

This command returns the part number, software revision and serial number of the unit.

getident

ok pn BUC-Ka25 swver 1.0.0_3 sn BUC-Ka25-31431

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