OUTPut2 :IMPedance

:IMPedance

OUTPut2:IMPedance <impedance> sets the output impedance of the “Main

Output” BNC to either 0, 50Ω, or 75.

OUTPut2:IMPedance 0 should be selected when an open-circuit or high-impedance load is connected to the output of the Agilent E1446A. The matching impedance is removed from the amplifier output. Also, the offset voltage into an open-circuit is twice that into a matched load. Setting OUTPut2:IMPedance 0 compensates for this effect so that the SOURce2:VOLTage:LEVel:IMMediate:OFFSet command will output the specified voltage into an open circuit.

 

When OUTPut2:IMPedance is set to either 50

or 75, either no output attenuation

 

or 20 dB may be set. OUTPut2:ATTenuation must be set to 0 dB when

 

 

OUTPut2:IMPedance is set to 0.

 

 

 

Parameters

 

 

 

 

 

 

 

 

Parameter

Parameter

 

Range of

 

Default

 

 

 

 

 

 

Name

Type

 

Values

 

Units

 

 

 

 

 

 

 

 

 

 

impedance

numeric

 

05075

 

Ohms

 

 

 

 

MINimumMAXimum

 

 

 

 

 

 

 

 

 

 

MINimum selects 0Ω output impedance; MAXimum selects 75Ω .

 

 

 

 

 

Comments Executable when initiated: Yes

 

 

 

Coupling group: Power amplifier

Related commands: SOURce:VOLTage:LEVel:IMMediate:OFFSet and OUTPUT2:ATTenuation

*RST Condition: OUTPut2:IMPedance 50

Example Setting 75 output impedance

OUTP2:IMP 75

Set 75 output impedance

:OVERload?

OUTPut2:OVERload? determines if an overload condition exists by reading bit 11 of the amplifier’s Status register (Appendix C).

This command requires Agilent E1445A firmware revision A.02.00 or greater.

3-12 E1446/E1445 Command Reference

OUTPut2 Subsystem

Page 71
Image 71
Agilent Technologies E1446A user manual OUTPut2 IMPedance, OVERload?, 12 E1446/E1445 Command Reference OUTPut2 Subsystem

E1446A specifications

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