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RZ-VISION_Doblado: IDIOMA = castellano, SUBTITULOS = inglés
Hello, my name is Scott Pettigrove and I'm a Product Line Manager for VIAVI's Antenna Test Group.
00:00:08
Thank you for joining us today to discuss aligning antennas for point-to-point communications links using the RF Vision.
00:00:15
If you're watching this video, you likely already have some degree of familiarity with the RF Vision's focus.
00:00:22
Our mission is to ensure accurate alignment of site antennas per the RF design intent during both installation and maintenance.
00:00:30
We do this by combining a high-precision GNSS receiver, a built-in camera that is mechanically aligned to the boresight of the attached antenna,
00:00:37
a rugged 5-inch touchscreen, and an intuitive augmented reality-based targeting system into a complete, lightweight, and easy-to-use antenna alignment solution.
00:00:46
That complete solution has these notable attributes.
00:00:58
Firstly, we want to get you aligned more quickly.
00:01:02
We do that in a couple of ways, primarily with our new GNSS receiver, which has multiple constellation support and dual frequency support.
00:01:04
In the recent past, we've supported both GPS and GLONASS systems, but as of February of 2023, we've added Galileo, Baidu, and QZSS constellations as well.
00:01:14
Each of these constellations supports two frequencies, one in the 1500 megahertz range and one in the 1200 megahertz range.
00:01:26
So five constellations now instead of two.
00:01:35
The more constellations and frequencies that the GNSS receiver can see, the faster you can get aligned.
00:01:38
We also help you to see and report exactly what your antenna sees.
00:01:46
So we have a unique, mechanically aligned line-of-sight survey that is driven by our mechanically aligned camera that's built into the unit.
00:01:50
This helps you to understand if the coverage that your antenna sees is jeopardized by obstructions,
00:01:59
both far field and near field, including potential PIM generators.
00:02:03
It's rugged, very compact, and lightweight, and it's the perfect companion for those long days in the field.
00:02:09
It's one tool for all your alignment needs, whether it's for panel antennas, microwave antennas, cylindrical and or small cell antennas.
00:02:15
And our solution also acts to reduce the amount of time from the assignment of work to the validation of the work performed.
00:02:24
We do that in a couple of ways, one with automatic reporting and results uploads to Stratasync,
00:02:34
which is VIAVI's cloud-based asset and data management system,
00:02:41
and optionally with Stratasync's end-to-end job-oriented workflow.
00:02:45
And with Stratasync workflow, you enter the job specifics into a form in the cloud.
00:02:50
You push the job to a specific technician and instrument.
00:02:56
You pick the job from a list that's then represented on the RF vision screen itself.
00:02:59
You align to the configuration that's been passed to that job
00:03:04
and then automatically save the results and reports back to Stratasync.
00:03:07
Though it's not the primary focus of our discussion today,
00:03:12
if you find that Stratasync workflow intrigues you,
00:03:15
please reach out to your local VIAVI sales rep to find out more.
00:03:18
The whole goal is to ensure that what you install and deploy
00:03:23
matches the intent of the planned RF design.
00:03:26
Unless, of course, our line-of-sight camera shows you that the planned design
00:03:29
might not be achieving the expected coverage
00:03:32
or brings potential near-field PIM sources into view.
00:03:35
We spend much of our time talking to folks about the importance of accurate alignment of panel antennas for cellular applications,
00:03:38
and there are good reasons for that.
00:03:46
Incorrectly aligned panel antennas can result in RF coverage gaps, overlaps and interference,
00:03:48
reduced capacity for the antenna for the site as a whole, increased handover failures,
00:03:54
and with that comes increased drop calls, possibly subscriber frustration and churn,
00:03:59
as well as increased potential for repeat site visits.
00:04:04
if you're not aware that the problem that you're trying to solve is actually related to misaligned antennas.
00:04:07
But we don't normally spend as much time talking about the criticality of point-to-point antenna alignment,
00:04:15
though you can argue that the effects of misalignment here could be even more severe,
00:04:20
where one misaligned antenna in a microwave backhaul link, for instance, could bring down the entire site.
00:04:24
So accurate alignment of microwave links is fundamental to service quality and customer satisfaction on that link.
00:04:31
Poorly aligned links can result in degraded link capacity and reliability, increased wind and vibration sensitivity,
00:04:37
loss of link redundancy and therefore potential impact to SLAs in place, service outage and revenue interruptions,
00:04:44
as well as customer churn and revenue loss.
00:04:51
So when it comes to using the RF vision to align microwave links, there are two primary use cases that apply.
00:04:54
First is to use two RF visions and two climbers to simultaneously align both ends of the link.
00:05:04
This is the fastest and the most efficient approach.
00:05:10
The second is to use one RF vision and one climber to iteratively align both ends of the link.
00:05:13
And this method is effective, but takes longer and quite a bit more energy.
00:05:20
So using the RF vision, microwave dish alignment is optimized at each end of the link
00:05:24
by aligning the nearside antenna onto the main lobe of the farside antenna.
00:05:31
And we can do this without installing and or powering the antenna radios.
00:05:36
This makes fine-tuning of the antennas to top-dead center of the main lobe with a digital voltmeter much faster and easier after the radios are installed and powered up.
00:05:43
Now let's discuss how the RF vision accomplishes microwave antenna alignment in a little more detail.
00:05:59
When aligning point-to-point links, the RF vision will use two points in space to calculate azimuth and tilt alignment targets.
00:06:04
Each point is described by the respective antenna's latitude, longitude, and AMSL height, where AMSL stands for Above Mean Seed Length.
00:06:16
And using AMSL height allows for absolute height references for each antenna.
00:06:25
Height above ground is relative and is normally different for each site and therefore not used.
00:06:31
The RF vision mounted on side A will use point A, measured by the RF vision GNSS receiver,
00:06:37
and point B, entered into the RF vision UI by the user,
00:06:45
to calculate the alignment targets for path A to B in the form of target azimuth and tilt.
00:06:48
Likewise, the RF vision mounted on side B will use measured point B and user-entered point A
00:06:57
to calculate the alignment targets for path B to A.
00:07:03
To show how this is accomplished on the RFVision,
00:07:11
let's walk through the microwave alignment application.
00:07:13
To align microwave antennas,
00:07:17
select the Microwave Align icon on the RFVision's main screen.
00:07:19
Here's a view of the microwave alignment screen.
00:07:26
The box in the lower right-hand corner contains information
00:07:29
about your local latitude, longitude, and AMSL height
00:07:32
measured by the RFVision GNSS receiver.
00:07:36
Make sure that your height input is set to GPS AMSL height in the settings menu.
00:07:41
Touch the box in the lower left-hand corner to enter the latitude, longitude, and AMSL height for the far end antenna.
00:07:48
That will take you to the path information screen where you enter the path ID and the latitude, longitude, and AMSL height of the far end antenna.
00:07:59
This information could be derived from the link design parameters provided to you by a co-worker at the far end
00:08:07
or captured by you on a prior visit to the far end.
00:08:13
Note that the latitude and longitude are always entered in decimal degree format in this screen.
00:08:17
Select Accept when you're done.
00:08:23
This will bring you back to the microwave alignment screen,
00:08:31
where your new azimuth and tilt target values will be shown.
00:08:34
Align the antenna to the target values using the RFVision's augmented reality alignment system,
00:08:38
and when the bullseye turns from red to green, lock your antenna down.
00:08:43
While aligning, please make sure to give the bullseye target at least five seconds of settling time
00:08:49
to allow for our smoothing algorithms to complete their work.
00:08:54
Select Save, and you're done.
00:08:58
With that under our belt, let's talk in more detail about the two primary use cases for microwave alignment with the RF vision.
00:09:07
The first use case is alignment with two RF visions.
00:09:13
Using an RF vision on each side of the link simultaneously will expedite the alignment process substantially.
00:09:21
Begin by mounting one RF vision on the side A antenna and another on the side B antenna,
00:09:30
and wait until the RF visions obtain GNSS lock.
00:09:36
At this point, the operators on each side will communicate with each other via voice, text, or email.
00:09:40
The operator on side A will input the location values measured by the RF vision attached on side B,
00:09:46
and the operator on side B will enter the location values measured on side A.
00:09:54
Both operators then proceed to align their azimuth and tilt targets using the augmented reality alignment system.
00:10:03
The second use case is alignment with one operator and one RF vision.
00:10:15
Mount the RF vision on the Side-A antenna and enter the latitude, longitude, and AMSL height of the far end antenna based on link design parameters.
00:10:19
Align the antenna on Side-A to the bullseye target and save the report.
00:10:35
This is very important to do this.
00:10:39
You'll need the information from that report when you get to side B.
00:10:40
Now take the RF vision to the side B antenna, mount it,
00:10:46
and enter latitude, longitude, and height values saved during the side A alignment.
00:10:49
Align the antenna on side B to the bullseye target and save the report.
00:10:56
If the side B actual values differ significantly from the original design targets,
00:11:05
you may need to revisit side A and repeat the alignment using the saved values that you obtained during the side B visit.
00:11:09
So before we wrap up, let's talk briefly about what comes with the standard RFVision 2000 kit.
00:11:16
The kit includes the RFVision antenna alignment tool, a universal strap clamp for use on a variety of antenna types,
00:11:28
a soft padded carry bag, a hard carry case for protected transport to and from the site,
00:11:36
an AC to DC power supply with universal wall adapter system, and a USB cable for power and data connectivity.
00:11:43
VIAVI carries a variety of optional accessories for the RF vision.
00:11:55
Some that are particularly valuable for microwave applications are
00:11:58
the lip clamp, which attaches to the top lip of some dish-style antennas where there is not room for the standard clamp,
00:12:02
the extended lip clamp, a variation of the lip clamp that accommodates larger clamp depth,
00:12:10
the extended lip clamp with L-back plate that registers to the top of the antenna's lip to make the attachment quick and secure,
00:12:15
and a set of extended straps for the universal strap clamp to allow use on dishes up to 12 feet in diameter.
00:12:24
So in summary, here's what we've covered today.
00:12:38
The RF Vision quickly and easily aligns antennas in a point-to-point link prior to installing and powering the antenna radios.
00:12:41
The fastest method to align both antennas on a link is to use two RF Visions simultaneously,
00:12:48
though a single unit can be used if you have the time.
00:12:56
The RF Vision quickly points microwave antennas onto the main lobe of the opposite antenna in a link.
00:13:02
Subsequent fine-tuning of the alignment to top-dead center of the main lobe
00:13:09
normally requires powering the antenna radios and the use of a digital voltmeter to optimize received signal strength.
00:13:13
So that's all we have today.
00:13:25
Thank you very much for spending time with us.
00:13:27
We hope that you found that this information was both helpful and useful.
00:13:29
If you'd like to know more about VIAVI's RF Vision Antenna Alignment Tool
00:13:34
or other VIAVI tools to help you with your RF, fiber, and coax testing needs,
00:13:37
please reach out to your nearest VIAVI sales representative or authorized dealer
00:13:42
or contact us at www.viavisolutions.com.
00:13:46
And to all you bold and brave tower climbers, have a great day up there in the clouds.
00:13:51
- Idioma/s:
- Idioma/s subtítulos:
- Autor/es:
- VIAVI
- Subido por:
- Pedro Luis P.
- Licencia:
- Dominio público
- Visualizaciones:
- 67
- Fecha:
- 7 de febrero de 2024 - 22:52
- Visibilidad:
- Público
- Centro:
- Sin centro asignado
- Duración:
- 11′ 12″
- Relación de aspecto:
- 16:10 El estándar usado por los portátiles de 15,4" y algunos otros, es ancho como el 16:9.
- Resolución:
- 1152x720 píxeles
- Tamaño:
- 23.15 MBytes