Anritsu MG3641A - Manual (Page 66)

SECTION 4 OPERATING INSTRUCTIONS
4.7.3 External Modulation Signals (Ext1, Ext2)
Ext1 and Ext2 apply modulation using external signals supplied to the "Ext1" and "Ext2" connectors (600
Ω
impedance) of Mod Input on the front panel.
The AM modulation factor or FM frequency deviation matches the relevant preset value, when the external signals
applied to the "Ext1" and "Ext2" connectors assume a level of 2 Vp-p. Adjust the external signal level in such a
manner that the " " and " " lamps located to the right of the "Ext1" and "Ext2" connectors, respectively, will both
go out.
If the lamp lights: The input level is too low. Raise the input level.
If the lamp lights: The input level is too high. Lower the input level.
If the frequency of the modulation input signal is 100 Hz or less, adjust the signal level so that and alternately
turns ON.
MG3641A/MG3642A front panel
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