Agilent 33120A User's Guide

Chapter 4 Remote Interface ReferenceOutput Configuration CommandsOUTPut:LOAD {50|INFinity|MINimum|MAXimum}Select the output termination for output amplitude and offset voltage.The function generator has a fixed output impedance of 50 ohms on theOUTPUT terminal. You can specify whether you are terminating theoutput into a 50 ohm load or an open circuit. Incorrect impedancematching between the function generator and your load will result inan amplitude or offset which does not match the specified signal level.[ Stored in volatile memory ]œ INF sets the output termination to “high impedance”. MIN selects50W. MAX selects “high impedance”. The default is “50”.œ The amplitude (or dc offset) is automatically adjusted (and no error isgenerated) if you change the output termination. For example, if youset the amplitude to 10 Vpp and then change the termination from50 ohms to “high impedance”, the displayed amplitude will doubleto 20 Vpp. If you change from “high impedance” to 50 ohms, thedisplayed amplitude will drop in half.œ If you specify a 50 ohm termination but are actually terminating intoan open circuit, the displayed output will be twice the value specified.For example, if you set the offset to 100 mVdc (and specify a 50 ohmtermination) but are actually terminating the output into an opencircuit, the actual displayed offset will be 200 mVdc.4OUTPut:LOAD? [MINimum|MAXimum]Query the output impedance. Returns “50” or “9.9E+37”.OUTPut:SYNC {OFF|ON}Disable or enable output from the SYNC terminal. The default is “ON”.When the sync signal is disabled, the output level on the SYNC terminal isindeterminate (it might be a TTL “high” or a TTL “low”).[ Stored in volatile memory ]See “SYNC Signal” on page 68 in chapter 3 for more information on theSYNC signal provided for each of the output functions.OUTPut:SYNC?Query the state of the SYNC terminal. Returns “0” (OFF) or “1” (ON).151