Products > Test Equipment

Marconi Adret 742B RF signal generator

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DoricLoon:

--- Quote from: Mr Helpful on January 09, 2018, 03:21:56 pm ---Are you still looking for manuals?

I may be able to help.

--- End quote ---

Between the manuals for the 740 and some playing around I have it pretty well sussed out now but if you have an documentation for the 742B I'd be glad to have a copy.

Thanks Jim

jhl620:
I realize this topic hasn't been active, but I was hoping to find an answer about a Marconi / Adret 730A that I'm currently using, for which there doesn't appear to be a user manual anywhere that I can find. I did find the service manual, which is online but doesn't have the information I need. I'd love to get information about how to switch this instrument to remote control and the various IEEE488 (GPIB) codes. I saw that someone had posted a picture of a similar manual? Any chance to find out where you got it? Even the 740 manual might be helpful at this point! Thank you!

Gyro:
Welcome jhl620  :)

You can find the 730a manuals at http://bama.edebris.com/manuals/adret/730a
They're a mixture of French and English as discussed earlier in the thread.

DoricLoon:

--- Quote from: jhl620 on July 31, 2018, 10:44:09 am ---I realize this topic hasn't been active, but I was hoping to find an answer about a Marconi / Adret 730A that I'm currently using, for which there doesn't appear to be a user manual anywhere that I can find. I did find the service manual, which is online but doesn't have the information I need. I'd love to get information about how to switch this instrument to remote control and the various IEEE488 (GPIB) codes. I saw that someone had posted a picture of a similar manual? Any chance to find out where you got it? Even the 740 manual might be helpful at this point! Thank you!

--- End quote ---

The link below should take you to my dropbox where I've uploaded a copy of the manual for the 730a. The manual includes instructions on remote access. That section is in French but those instructions and control strings are the same anyway.

https://www.dropbox.com/s/s2dmqtun7o9vyls/adret_730a_vhf-generator.pdf?dl=0

Below is a snip of code to ramp the frequency through steps from 1MHz to 500MHz in VBA with Visa. I'm no master coder so don't take it as gospel but example of the control strings are there.


--- Code: ---Option Explicit

    Dim ioMgr As VisaComLib.ResourceManager
    Dim RFG As VisaComLib.FormattedIO488
    Dim AWG As VisaComLib.FormattedIO488
    Dim instrQuery As String
    Dim instrAddress As String
    Dim FRQ As Integer
   
   
   
Public Sub Initialize_Click()

On Error GoTo ioError
   
    Set ioMgr = New VisaComLib.ResourceManager
    Set RFG = New VisaComLib.FormattedIO488
    Set RFG.IO = ioMgr.Open("GPIB0::1::INSTR")
   
   
Exit Sub

ioError:
    MsgBox "An IO error occured:" & vbCrLf & Err.Description
   
End Sub
   

Public Sub cmdSetUP_Click()

On Error GoTo ioError

    RFG.WriteString ("*RST")
    RFG.WriteString ("F 1e6")
    RFG.WriteString ("A-30")
    RFG.WriteString ("FM0")
    RFG.WriteString ("RF 1")
   
   
   
    MsgBox "RFG set to 1MHz -30dBm  No FM modulation"
   
Exit Sub

ioError:
    MsgBox "An IO error occured:" & vbCrLf & Err.Description
   
End Sub

Public Sub Ramp_Click()


   
    For FRQ = 1 To 500
        On Error GoTo ioError
        RFG.WriteString ("F " & FRQ & "e6")
        Application.Wait (Now + TimeValue("0:00:02"))
       
    Next FRQ
   
Exit Sub

ioError:
    MsgBox "An IO error occured:" & vbCrLf & Err.Description
   
End Sub

Public Sub cmdReadIDN_Click()

On Error GoTo ioError
   
    instrQuery = AWG.ReadString
    MsgBox instrQuery, , "Instrument responce to *IDN?"
Exit Sub

ioError:
    MsgBox "An IO error occured:" & vbCrLf & Err.Description
   
End Sub


Public Sub instrclose_Click()

On Error GoTo ioError
   
    RFG.IO.Close
    MsgBox "Connection Closed"
Exit Sub

ioError:
    MsgBox "An IO error occured:" & vbCrLf & Err.Description
   
End Sub

--- End code ---

Ankorjd:
Hello,

The service manual for the ADRET 742 is uploaded in the KO4BB web site with 2 manuals (schematics and description of each module). What is missing are the schematics for the:
   - Output module 3
   - Attenuator control
   - Pulse modulation
   - Pulse driver

If some of you have these schematics we could have a complete service manual

Thanks in advance

Ankorjd

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