Polaris ASLE-140-36D User manual

ASLE-140-36DUser Manual
Copyright © 2022 Polaris. All Rights Reserved
1
Satellite Link Emulator
ASLE-140-36D
▪Address: #1913, Anam tower, 311 Teheran-ro, Gangnam-gu, Seoul,
Republic of Korea
▪Tel: [phone]
▪Email: [email protected]
▪Web: www.polariswave.com
User Manual

ASLE-140-36DUser Manual
Copyright © 2022 Polaris. All Rights Reserved
2
This user manual is copyrighted by Polaris. No part of this document may be reproduced,
copied, or transmitted without permission in writing by Polaris.
Polaris reserves the right to change the contents of this manual without prior notice.
© 2022 Polaris. All Rights Reserved.
UM-ASLE-140-36D-ver1.0
Printed in Republic of Korea

ASLE-140-36DUser Manual
Copyright © 2022 Polaris. All Rights Reserved
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Preface
This user manual contains operation instructions and test procedures for the ASLE-
140-36D. The ASLE-140-36D is an instrument that reproduces propagation time delay,
path loss, and doppler shift that occur in real-world satellite links.
This user manual is divided into the following sections:
Precautions
Chapter 1
Describes overview, features, and applications.
Chapter 2
Describes the configuration on the front panel and the connectors on the rear
panel.
Chapter 3
Describes installation details.
Chapter 4
Describes how to operate the instrument.
Chapter 5
Specifications.
Appendix
Describes warranty information.

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CONTENTS
Preface................................................................................................................................................................3
Precautions.......................................................................................................................................................6
Chapter 1...........................................................................................................................................................8
Introduction ..............................................................................................................................................9
Overview ............................................................................................................................................9
Features ..............................................................................................................................................9
Applications ......................................................................................................................................9
Chapter 2........................................................................................................................................................ 10
Front and rear panels........................................................................................................................11
Front panel.....................................................................................................................................11
Rear panel.......................................................................................................................................12
Chapter 3........................................................................................................................................................ 13
Installation ..............................................................................................................................................14
Unpacking....................................................................................................................................... 14
Initial Inspection ..........................................................................................................................14
Applying Power............................................................................................................................14
Booting ............................................................................................................................................14
Chapter 4........................................................................................................................................................ 16
How to operate the instrument ...................................................................................................17
Doppler............................................................................................................................................ 17
Delay .................................................................................................................................................19
Attenuation .................................................................................................................................... 21
Utility................................................................................................................................................. 23

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Remote Operation ......................................................................................................................28
Chapter 5........................................................................................................................................................ 30
Specifications......................................................................................................................................... 31
Appendix........................................................................................................................................................32
Warranty .................................................................................................................................................. 33

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Precautions
Be sure to read these precautions before using this instrument.
Warning:
Information to prevent personal injury.
Caution:
Information to prevent damage to the instrument.
WARNING
Electrical hazards (AC supply voltage)
•There is a danger of electric shock if you touch the power cord with wet hands.
•Do not remove this instrument covers as this may result in personal injury.
•If there is no grounded AC power outlet, the grounding terminal on the rear panel
must be grounded.
•Pulling out the power cord may cause personal injury and electric shock.
•There is a danger of electric shock if the fuse is replaced while the power is
supplied. Before replacing the fuse, turn off the power switch and disconnect the
power cord from the power socket.
Fire hazard
•Make sure that only fuses of the correct rating and type are used for replacement.
Tilt facility
•When the instrument is in the tilt position, it is advisable, for stability reasons, not
to stack other instrument on top of it.
!
!
!

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CAUTION
Static sensitive components
•This instrument contains static sensitive components which may be damaged by
handling.
Storage and transportation
•Do not store it in a place exposed to high temperatures over 50˚C or high humidity
over 90%.
•Do not store in a place exposed to direct sunlight or dust.
•Do not store in a place exposed to active gas such as thinner and benzene.
•Avoid any shock or vibration during transportation.
•This instrument has a fan on the rear panel to maintain a steady internal
temperature. Leave a gap of at least 10 cm between the rear panel and wall,
nearby equipment or any obstructions so that fan ventilation is not blocked.
•Keep cooling fan free of dust.
!

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Chapter 1
Introduction
Contents
Overview .......................................................................................................9
Features ........................................................................................................9
Applications ................................................................................................9

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Introduction
Overview
ASLE-140-36D reproduces link effects that occur as signals propagate though the
atmosphere and space. These link effects include propagation delay, carrier Doppler
shift, and path loss. The ASLE-140-36D reproduces those effects by generating time
delay, magnitude attenuation, and DDS frequency shift.
Features
Operating Frequency (MHz): 140
Operating Bandwidth (MHz): 36
Time Delay Range / Resolution (us): 0 (Bypass), 10 to 530,000 / 1
Attenuation Range / Step (dB): 0 to 40 / 0.5
Doppler Shift Range / Resolution (Hz): -3,000,000 to +3,000,000 / 1
14bit ADC: Excellent SNR
Applications
Satellite Modem testing
VSAT testing:
Satellite payload testing
UAV testing
Earth terminal testing
Satellite system integration test beds
Mobile transceiver testing

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Chapter 2
Front and Rear Panels
Contents
Front panel ...............................................................................................11
Rear panel .................................................................................................12

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Front and rear panels
This chapter describes the configuration on the front panel and the connectors on
the rear panel.
Front panel
[Figure 2-1]
①VFD (Vacuum Fluorescent Display)
The VFD displays the current setting values for the control parameters as follows.
ㆍCenter Freq: operating frequency fixed at 140MHz
ㆍDoppler: carrier Doppler shift
ㆍDelay: propagation time delay
ㆍAttenuation: path loss
②Data Entry
Hard keys to set and edit parameters
③Power
Blue LED is on when primary power is applied.
④PLL Lock:
Blue LED is on when phase is locked and red LED is on when phase is unlocked.
⑤Internal Reference:
Blue LED is on if no external reference is present.
⑥External Reference:

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Blue LED is on if external reference is present.
The ASLE-140-36D will automatically switch to its internal reference if no external
reference is present. At this time, switching is completed after 5 seconds have
elapsed for system resynchronization.
⑦RF Input / RF Output
ㆍRF Input: N type Jack connector, 50Ω
ㆍRF Output: N type Jack connector, 50Ω
⑧Power Switch
ㆍPrimary power on/off switch
Rear panel
[Figure 2-2]
①USB type-A receptacle connector for external USB interface
②D-Sub 9pin plug connector for external RS-232 interface
③D-Sub 9pin plug connector for external RS-422/485 interface
④SMA Jack connector for external 10MHz reference input
⑤FAN to ventilate internally-generated heat
⑥Fused AC power inlet: 90Vac ~ 240Vac, 47Hz ~ 63Hz
⑦Grounding terminal

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Chapter 3
Installation
Contents
Unpacking ...................................................................................................14
Initial Inspection.......................................................................................14
Applying power........................................................................................ 14
Booting......................................................................................................... 14

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Installation
Unpacking
Unpack the shipping container and take out the contents as shown in [Table 1].
[Table 1]
Quantity
Description
Remarks
1
ASLE-140-36D
Satellite Link Emulator
1
AC Power Cord
1
User Manual
Initial Inspection
Inspect the ASLE-140-36D for any possible wear or damage. If the ASLE-140-36D
appears damaged when you first unpacked the container, please do not install the
instrument. Contact Polaris immediately.
Applying Power
ㆍPlace the ASLE-140-36D on the intended workbench and plug the power cord into
the AC power inlet on the rear panel.
ㆍPress the power button located on the front panel.
Booting
When the power switch is turned on, letter strings as shown in [Figure 3-1 to 3-3]
▪Address: #1913, Anam tower, 311 Teheran-ro, Gangnam-gu, Seoul, Republic of Korea
▪Tel: [phone]
▪Email: [email protected]

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appear on the VFD and system booting is completed.
[Figure 3-1]
[Figure 3-2]
[Figure 3-3]

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Chapter 4
How to Operate the Instrument
Contents
Doppler ......................................................................................................17
Delay ...........................................................................................................19
Attenuation ..............................................................................................21
Utility ...........................................................................................................23
Remote Operation ................................................................................ 28

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How to operate the instrument
This instrument is controllable through Data Entry on the front panel or remote
interface.
Doppler
Range / Resolution
Doppler shift: -3MHz to +3MHz / 1Hz
Setup procedures
①Press [DPPL] key to set the Doppler shift. The pointer [▶] appears as shown
in [Figure 4-1].
[Figure 4-1]
②Press numeric values of Doppler shift (valid range: -3MHz to +3MHz, 1Hz
steps). To set in Hz steps, press numeric values and then press the [ENTER]
key. To set in MHz steps, press any desired number from [1] to [3], press the
[MHz/ms] key and then press the [ENTER] key. Press the [-] key to change
the + and - signs.
☞[Figure 4-2] is an example for -50,000Hz.
[Figure 4-2]
ㆍPress [ESC] key to edit numeric values of Doppler shift.

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☞The Doppler field changes to blank as shown in [Figure 4-3].
[Figure 4-3]
ㆍPress numeric values of Doppler shift again.
☞[Figure 4-4] is an example for -100,000Hz.
[Figure 4-4]
ㆍPress [ENTER] key.
☞Success !! is displayed at the Doppler field, and numeric values are
saved.
ㆍWhen numeric values of Doppler shift are out of the valid range (-3MHz to
+3MHz), “ERR. Range: +/-3MHz”appears for 1 second as shown in [Figure
4-5], and it returns to the previous value.
[Figure 4-5]
ㆍPress the [ESC] key to return to the previous menu.

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Delay
Range / Resolution
0 (Bypass), 10 to 530,000us / 1us
Setup Procedures
①Press [Delay] key to set the time delay. The pointer [▶] appears as shown in
[Figure 4-6].
[Figure 4-6]
②Press numeric values of delay (valid range: 0 (Bypass), 10 to 530,000us, 1us
steps). To set in us steps, press numeric values and then press the [ENTER]
key. To set in ms steps, press any desired numbers less than or equal to 530,
press the [MHz/ms] key and then press the [ENTER] key.
☞[Figure 4-7] is an example for 50ms.
[Figure 4-7]
ㆍPress the [ESC] key to edit numeric values of delay.
☞The Delay field changes to blank as shown in [Figure 4-8].
[Figure 4-8]

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ㆍPress numeric values of delay again
☞[Figure 4-9] is an example for 500ms.
[Figure 4-9]
ㆍPress [ENTER] key.
☞Success !! is displayed at the Delay field, and numeric values are saved.
ㆍWhen numeric values of delay are out of the valid range (10 to 530,000us),
“ERR. Range: 0~530ms”appears for 1 second as shown in [Figure 4-10],
and it returns to the previous value.
[Figure 4-10]
ㆍPress the [ESC] key to return to the previous menu.