The cmm4 has both 48 and 24 volt terminals you can provide both supplies
or just one or the other. The diff from the CTM2 and cmm4 is the CTM2
has the built in dcdc converter to drop 48v to 24 but not the other way
around for 24 to 48.
cmm4 rackmount no switch is about $1800 MSRP and the cmm4 with switch
and gps module is $3345 MSRP
On 10/20/2015 09:53 AM, Josh Baird wrote:
How much is a rackmount CMM4 these days?
Do you have to provide both 24V and 48V if you want to power each, or
does it have internal DC-DC converters?
On Tue, Oct 20, 2015 at 10:50 AM, Eric Muehleisen <[email protected]
<mailto:[email protected]>> wrote:
+1 for Adam and David. We have a blend of CMM4 and CTM2's. My
plant techs love the CTM2's because of their simplicity and
design. However, our CMM4's just work. Never have blown ports.
CTM2's are prone to port failure and have management issues.
On Tue, Oct 20, 2015 at 9:43 AM, David <[email protected]
<mailto:[email protected]>> wrote:
I only moved from CTM2 to CMM4 rackmount stuff only because of
price. CTM2 does have all the good stuff a cmm4 only wishes it
had but as far
as protection both are equal. I have both in the field and
have steadily replaced most if not all CTM1's with CMM4 due to
CRC and some port failures
after storms.
I want my CMM(5) or the NEW CMM from cambium with magic sauce
to use with GIGE .. oh yeah must be Rackmount and have some
cool new features for monitoring.. just sayin.
On 10/20/2015 08:53 AM, Adam Moffett wrote:
When I lived in Canopy land, I liked the Sync Injectors for
the small form factor and low power. Great for little bitty
installs.
We never lost a port on a CMM4, ever. We did blow up a few
sync injectors during thunderstorms. So if you don't want to
worry about it, get the CMM4.....maybe your vendor will put
the popcorn inside for you.
On 10/20/2015 2:26 AM, That One Guy /sarcasm wrote:
We have been deploying the packetflux stuff as primary sync
solution. Other than the little bugginess with it, I'm very
satisfied.
We have a CTM that I think we paid 1700 bucks for, the night
we deployed it, we took a lightning strike and lost a port,
so we have an AP independently powered and synced from a
parasitic. To clean it up, we have to buy a whole new CTM,
whereas with packetflux we would probably have only needed
to buy a syncinjector.
We have a couple CMM Micros that have been tooling along for
years without issues, but I think we originally paid like 2
grand for those too.
We have one deployed CMM4 and one on the shelf, handy
because theyre outdoor and have the switch built in, but
that massive power supply makes me want to take a dump on my
cat, and I think their pricetag at the time was like 2400
bucks, same issue with CTM, lose a port replace the whole
thing. Want to move up to a gigabit radio, buy a whole new unit.
Little things like losing the module order, weird ways of
firmware upgrades and 10mb management, and no good way to
monitor certain things in Powercode don't really justify the
cost of the other two solutions. The popcorn is a selling
point to, cambium doesn't give you shit. The outstanding
responsiveness to support requests and openness of the
manufacturer with packetflux is a selling point for me too.
Am I missing anything that should be coming into the
decision making process here? The boss would be willing to
shell out the cash for the CTM/CMMs but that eats a boatload
of budget. And it does require a certain attention to detail
to manage the packetflux gear, so if I were to exit, would
it be as simple as a fully managed solution for my replacement.
Anybody here turn away from the packetflux solution for
either of the other two?
--
If you only see yourself as part of the team but
you don't see your team as part of yourself you have already
failed as part of the team.
