Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: I have recently installed an Elite 7 HDI and am trying to find a Micro card with Virginia coastal water way channels, obstructions, navigational info
Document: My boat has a top speed of around 25-30 MPH, so it's not a super fast boat.After a couple calls to lowrance (who were great by the way) I spoke with a tech who advised me that the Elite series units were built with the GEN1 processors so the maps did have a little lag time. This would be worse with a map card installed due to the additional detail the unit would have to process and redraw.
The processor on &#34;MY&#34; Elite 7 is not fast enough to process the NAVIONICS chip for satisfactory results. The Sonar and Downscan are extremely clear and I really like being able to split those screens. But I am VERY dissappointed in the chart speed. I give the sonar and downscan 5 stars but I give the chart only 2.
The wide screen format is just excellent. Since it's used in a kayak, it does get wet very often and I have no issues with water intrusion. Another plus is the track back feature and recording capabilities. I recommend this over the similarly priced Garmin units. The data presented is very customizable and I find using the menus fairly easy. Overall, I think this is a very tough and functional unit, and is priced about right.
If you haven't noticed gps units are going to Degree-Minutes coordinates and away from Degree-Minutes-Seconds coordinates. So if you have the Elite 7 it is in Degrees-Minutes and if you have an old map of a lake with waypoints in Degree-Minutes-Seconds you'll land up in the trees somewhere if you just add the seconds onto the minutes. You will have to convert them by dividing the Seconds by 60 then adding them to the Minutes. The unit will be dead on.
The file is available at lowrance.com. All you do is put the file on a micro SD card, make sure the unit is pwered off, insert the card and power on the unit. The Elite7 will detect the card and automaticially perform the upgrade.The reason I gave this unit only 3 stars is the GPS map. I noticed this unit had some issues scrolling the built in GPS map. Didn;t think too much of it until I added the Navionics+ chip.
got hdi7 june 26 broke same day tried to install gold card screen went black tried instsll up date no luck sent back factory I got another one back I. went fishing135 foot water depth signals disappeared and fish signs disappeared callef tech he said set sonar on deep water and auto we'll keep posted suggest buy humming bird .this thing has problems
I recently switched from Garmin to Lowrance hoping for a better display and better lake maps in the Texas Oklahoma regions. There are some very serious issues with this unit in my opinion making me regret the purchase. First, the screen is polarized at a 45 degree angle. Almost every pair of polarized sunglasses are polarized at 90 degrees perpendicular to the horizon, which is necessary to reduce glare coming off the water or any horizontal surface.
This unit came as advertised and it works well with the loaded Navionics package. It was the lowest price I could find.
I am very dissappointed in the time it takes for the chart to change from one picture to the next when either zooming in or out, or just changing from whatever page I'm on back to the chart. It takes a minimum of 7 to 15 seconds for the chart to look through the NAV chip and pop up on the screen. It has a long lag when running at speeds when zoomed in too far. The top third of the page turns white until the chart catches up.
First let me say that this is a really good unit. If you are looking for solid performance on the sonar, this package has it. The down scan is REALLY great. Gives clarity to what you are seeing on the sonar. For Sonar and downscan alone, I would have given this unit a 5+ star rating. The screen size is big enough to see detail with out being so big it is in the way of my other instruments. Install and setup were really easy to follow.
Answer: yes