Author Topic: NAS-Z5 Insertion unit  (Read 599 times)

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Offline veedub565

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NAS-Z5 Insertion unit
« on: December 08, 2019, 06:53:02 pm »
Hi, I have a Rhode & Schwarz NAS-Z5 insertion unit. I also have the Rhode &Schwarz CMS36 Radio Test set. Unfortunatly what I don't have is the cable that connects the two.

Anybody know what the part number is for the cable? Or got any details at all about the pinout?

I've tried R&S but without a part number they won't help.
 

Offline Rohde and Schwarz

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Re: NAS-Z5 Insertion unit
« Reply #1 on: December 23, 2019, 03:05:14 pm »
Hello,

our customer support had to dig very deep. The cable you are looking for is named CMS-Z37. Part No. is 1065 4920.00.

But as the instruments are not delivered anymore since the 1990s, the cable is also no longer available.

Only chance is to rebuild the cable youself according to the enclosed plan.

Best regards,
Gerti from the Rohde & Schwarz Social Media Team
 
The following users thanked this post: fcb, tooki, luma, ps, I wanted a rude username

Offline veedub565

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Re: NAS-Z5 Insertion unit
« Reply #2 on: February 04, 2020, 10:31:00 am »
Wow many thanks for this, please also thank your excellent customer support digging deep for this  :-+

I should be able to make up a new cable from the plan.
 
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Offline luma

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Re: NAS-Z5 Insertion unit
« Reply #3 on: February 05, 2020, 03:17:00 am »
That kind of support is one heck of an advertisement for buying R&S!
 
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Offline tooki

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Re: NAS-Z5 Insertion unit
« Reply #4 on: February 05, 2020, 06:42:53 pm »
Wow many thanks for this, please also thank your excellent customer support digging deep for this  :-+

I should be able to make up a new cable from the plan.
FYI, one critical bit of info is that some of the wires must be shielded, namely the ones labeled “geschirmt”. Lemme know if you need any more help translating the German.

I’m also a bit perplexed as to the connection list (“Verbindungsliste”) showing three items, not two. Two are the connectors, but one looks like it could be a PCB or something. It has wires coming from both connectors.
« Last Edit: February 05, 2020, 06:47:33 pm by tooki »
 

Offline veedub565

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Re: NAS-Z5 Insertion unit
« Reply #5 on: February 06, 2020, 08:09:29 am »

I’m also a bit perplexed as to the connection list (“Verbindungsliste”) showing three items, not two. Two are the connectors, but one looks like it could be a PCB or something. It has wires coming from both connectors.

Yes I noticed that too, it looks like there may be some sort of level converter built into one of the connectors. Without knowing the details of what that part is it's going to be difficult to make up a new lead.
« Last Edit: February 06, 2020, 08:11:15 am by veedub565 »
 

Offline veedub565

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Re: NAS-Z5 Insertion unit
« Reply #6 on: April 17, 2020, 12:01:34 pm »
Found a bit more information about this mystery component in the test lead. Looks like it has 4 inputs

+10v
-10v
GND
Res DC

and 2 outputs

GND
Unknown?

Looks like it may be some sort of op-amp with +/-10v supply, a ground, and a reference. And it's applying a reference voltage to the NAS-Z5 unit with +/- 10v swing.
 


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