Agilent 33120a output Disable

[madhu27]

Hello,

I'm trying to disable the output of agilent 33120A function generator. But it doesnot seem to have an output disable function. So, could i use the command "APPLy:DC DEFault, DEFault, 0" to do the same (referred from here). Any suggestions or comments are welcome.

Thanks for any help.

[crossrulz]

What drivers are you using for your instrument?  They should have a set DC function with X voltage.  Just use that with the voltage set to 0.

[madhu27]

Thanks for the reply.
I'm using NI driver 33XXX. Yes, I can use the set dc function to set the voltage as 0. But is that same as disabling the output? I can go for that if i'm sure that it does not cause any other effect. Any suggestions?

[Dennis_Knutson]

Define 'disable'. It is not the same as disconnecting the output but you don't have that option, do you?

[mcduff]

Try the command OUTPUT OFF to turn off output.
Alternatively the command OUTPUT ON to turn on output.

cheers,
mcduff

PS I suggest you look at the programming manual for all of the commands.

[Dennis_Knutson]

As noted in the first post, the vendor says the option is not available. Have you seen the command on the manual?

[mcduff]

Sorry! My bad. I have a 33220A, misread the instrument. (Strange it doesn't allow you to set the output to 0 V.)

mcduff

[Dennis_Knutson]

It does allow you to set the output. What it apparently does not do is allow you to disconnect the output.

[mcduff]

Sorry once again, I was unclear. On the 33220A the output cannot be set to 0, it can be turned off, but not set to 0. I had a problem where I was using a power amplifier in conjunction with a 33220A and even with the output off, there was a small leakage that was being amplified. I could not set the output to 0V to try to mitigate it.

mcduff

[madhu27]

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@Dennis_Knutson wrote:
As noted in the first post, the vendor says the option is not available. Have you seen the command on the manual?

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Thanks for all your reply.

I didnot find the option in the manual. I want to know whether using the command APPLY :DC [ <frequency|DEF> [,<amplitude|DEF> [,<offset>] ]] (all set to default) will be the same as using the command Enable Output as false(but not available for this device)  which is found in other such devices. Any Suggestions?

Thanks.