JW
Guest
Mon Oct 11, 2010 4:35 pm
Hello,
Looking for a datasheet for a Ma-Com SW-927 GaAs RF switch. No hits at all
from the usual suspects. Working on a HP 8990A peak power analyzer that's
loaded with them, and it appears that ALL their inputs (pin 1) are shorted
to pin 2 (GND)
(scratching head)
See
https://home.comcast.net/~spam_gobbler/8990A.jpg
for the partial schematic if that helps. The point in question is U35 pin
1 which is the RF input from the front panel. All the switches after that
appear shorted as well on *both* baseband boards.
Thanks!
Franc Zabkar
Guest
Tue Oct 12, 2010 9:14 pm
On Mon, 11 Oct 2010 11:35:47 -0400, JW <none_at_dev.nul> put finger to
keyboard and composed:
Quote:
Looking for a datasheet for a Ma-Com SW-927 GaAs RF switch.
Could this be the manufacturer?
http://www.macomtech.com/Switches
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
JW
Guest
Thu Oct 14, 2010 10:34 am
On Wed, 13 Oct 2010 07:14:27 +1100 Franc Zabkar
<fzabkar_at_iinternode.on.net> wrote in Message id:
<lag9b6dttnl4d69i3it144juatfe8aja39_at_4ax.com>:
Quote:
On Mon, 11 Oct 2010 11:35:47 -0400, JW <none_at_dev.nul> put finger to
keyboard and composed:
Looking for a datasheet for a Ma-Com SW-927 GaAs RF switch.
Could this be the manufacturer?
http://www.macomtech.com/Switches
Thanks Franc,
I believe you're right, the logo has changed slightly. Had a hard time
with this, as they sold out to Amp who was taken by Tyco. Their original
domain name
http://www.aufzu.de/semi/macom.html
now leads you to
http://www.cobham.com/about-cobham/defence-systems/about-us/sensor-systems.aspx
They don't have the datasheet, but I'll try contacting them.
Thanks again.
GregS
Guest
Thu Oct 14, 2010 6:01 pm
In article <tbjdb6pk1cm34rnfsdtop1f2hq5lhqse07_at_4ax.com>, JW <none_at_dev.nul> wrote:
Quote:
On Wed, 13 Oct 2010 07:14:27 +1100 Franc Zabkar
fzabkar_at_iinternode.on.net> wrote in Message id:
lag9b6dttnl4d69i3it144juatfe8aja39_at_4ax.com>:
On Mon, 11 Oct 2010 11:35:47 -0400, JW <none_at_dev.nul> put finger to
keyboard and composed:
Looking for a datasheet for a Ma-Com SW-927 GaAs RF switch.
Could this be the manufacturer?
http://www.macomtech.com/Switches
Thanks Franc,
I believe you're right, the logo has changed slightly. Had a hard time
with this, as they sold out to Amp who was taken by Tyco. Their original
domain name
http://www.aufzu.de/semi/macom.html
now leads you to
http://www.cobham.com/about-cobham/defence-systems/about-us/sensor-systems.aspx
They don't have the datasheet, but I'll try contacting them.
Thanks again.
Just to add to the confusion, Hughes bought Ma/com telecommunications.
In reality Ma/com led to Direct TV sold to SkyTerra, whics now something else.
In the end Echostar and Dish Network, and hughes, and GM
all have common ground.
Sorry I had to do that.!!!
