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Krowten
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Sunday, March 3rd, 2024 9:02 PM

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Should I remove Commscope CSAPDU5VP Drop Amplifier?

I recently dropped TV and phone service and just have Internet now.  I have a Commscope CSAPDU5P drop amplifier on the feed into the house.  The cable modem is connected to Out 2.  Do I really need this drop amplifier any more since the only thing connected to it is the cable modem (TG4482A)?  The cable modem is literally sitting right next to it.   

FWIW, I did try removing the amplifier and connecting the line right to the cable modem.  My adminittingly non-scientific tests though show that there was a very slight performance degradation WITHOUT the amplifier, most noticeable on upload speed.  I didn't think the amplified provided any benefit for Internet service, but does it?

Thanks.

Matt

Question

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Updated 

11 months ago

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Accepted Solution

EG

Expert

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108.2K Messages

11 months ago

You don't need the amp. They can actually cause more problems the they fix ! They are considered as being a *band-aid* fix and should only be used as a last resort.

1

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Krowten

New Poster

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7 Messages

Yeah, seems it is doing me no benefit.  I will leave it out.  Thanks!

Matt

11 months ago

0

EG

Expert

 • 

108.2K Messages

11 months ago

Compare the signal stats with and without the amp in the mix. Try getting them here: http://10.0.0.1 

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

3

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Krowten

New Poster

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7 Messages

@EG​ Ok, I got all the data now, lets see how this pastes:

With Commscope Drop Amplifier in Place
Downstream
Index
20
4
12
28
1
2
3
5
6
7
8
9
10
11
13
14
15
16
17
18
19
21
22
23
24
25
26
27
29
30
31
32
0
193
Lock Status
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Frequency
543000000
447000000
495000000
591000000
429000000
435000000
441000000
453000000
459000000
465000000
471000000
477000000
483000000
489000000
501000000
507000000
513000000
519000000
525000000
531000000
537000000
549000000
555000000
561000000
567000000
573000000
579000000
585000000
597000000
603000000
609000000
615000000
959800000
SNR
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
44.625977
43.376591
43.376591
43.376591
43.376591
43.376591
40.946209
40.946209
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
44.625977
43.376591
46.40 dB
Power Level
5.300003
4.599998
5.199997
4.599998
4.199997
4.599998
4.400002
4.599998
4.900002
4.699997
4.699997
5
5.199997
5.300003
5.400002
5.5
5.400002
5.300003
5.400002
5.5
5.300003
5.300003
5.400002
5.199997
4.900002
5
4.900002
4.800003
4.599998
4.5
4.599998
4.599998
7.099998 dBmV
Modulation
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
OFDM
Upstream
Index
1
2
3
4
Lock Status
Locked
Locked
Locked
Locked
Frequency
22800000
35600000
29200000
16400000
Symbol Rate
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
Power Level
46.270599
46.270599
46.270599
45.770599
Modulation
64QAM
64QAM
64QAM
64QAM
Channel Type
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
Commscope Drop Amplifier REMOVED
Downstream
Index
20
4
12
28
1
2
3
5
6
7
8
9
10
11
13
14
15
16
17
18
19
21
22
23
24
25
26
27
29
30
31
32
0
193
Lock Status
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Frequency
543000000
447000000
495000000
591000000
429000000
435000000
441000000
453000000
459000000
465000000
471000000
477000000
483000000
489000000
501000000
507000000
513000000
519000000
525000000
531000000
537000000
549000000
555000000
561000000
567000000
573000000
579000000
585000000
597000000
603000000
609000000
615000000
959800000
SNR
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
43.376591
44.625977
43.376591
43.376591
47.04 dB
Power Level
5.5
4.599998
5.300003
4.900002
4.199997
4.400002
4.400002
4.5
4.599998
4.800003
4.900002
4.900002
5.099998
5.300003
5.300003
5.5
5.5
5.5
5.5
5.5
5.400002
5.400002
5.400002
5.300003
5.199997
5.199997
4.800003
4.900002
4.699997
4.5
4.800003
4.900002
7.699997 dBmV
Modulation
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
OFDM
Upstream
Index
1
2
3
4
Lock Status
Locked
Locked
Locked
Locked
Frequency
35600000
16400000
29200000
22800000
Symbol Rate
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
Power Level
46.520599
46.020599
46.520599
46.270599
Modulation
64QAM
64QAM
64QAM
64QAM
Channel Type
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA

Let me know your thoughts.  Thanks!

Matt

11 months ago

0

Krowten

New Poster

 • 

7 Messages

@EG​ One other comment, this time around it seems like I'm getting almost the exact same performance test results with and without the amplifier.  Go figure!

I tried attached my spreadsheet I created, but for some reason it says "File Attachments not allowed" even though .xls and .xlsx are both listed as being allowed.

Matt

11 months ago

0

Krowten

New Poster

 • 

7 Messages

@EG​ Apparently you cannot attach files to a post even though it says.xls and .xlsx are supported:

11 months ago

0

Krowten

New Poster

 • 

7 Messages

11 months ago

I have some screenshots, but probably not everything you want to see.

Here is with the drop amp in place:

And here is WITHOUT the amp in place:

I'll try and grab all the text and do another post.

Matt

0

0

EG

Expert

 • 

108.2K Messages

11 months ago

You're welcome ! Take care !

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