UTILITIES
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[10 MHz Ext Dir] if your provided 10 MHz standard is better than that fitted in the
instrument.
(4) To obtain an internally generated 10 MHz standard from the instrument’s INT STD O/P
socket, select [10 MHz Int Out].
(5) Press [EXIT] to return to the Utilities Selection Menu 1.
Carrier phase adjustment (menu 1)
You can adjust the phase offset of the carrier with respect to its current phase in degrees as
follows:
(1) Press [Carrier Phase] to display the Carrier Phase Adjustment Utility shown in Fig. 3-24
below. This shows the currently selected phase offset for the selected signal source.
B3456
Fig. 3-24 Carrier phase adjustment utility
(2) Select the required adjustment control by pressing [Knob Fine], [Knob Medium] or [Knob
Coarse]. These provide adjustments in steps of 0.09°, 0.9° and 2.7° respectively.
(3) Press [Phase Shift] and adjust the carrier phase using the control knob. Turn clockwise to
advance the phase and anticlockwise to retard the phase. Note that if you have set the carrier
phase and subsequently adjusted the carrier frequency, the menu Phase Shift: value will be
blanked. This is because the value will then be indeterminate due to the adjustment.
(4) To establish a reference the displayed phase shift can be reset to 0.00° by pressing [Reset
Shift]. But note that this does not reset the actual phase shift, only the displayed value is
reset to provide a new reference.
(5) Press [EXIT] to return to the Utilities Selection Menu 1.
RF level units selection (menu 1)
RF output level units may be changed as follows:
(1) Press [RF Level Units] to display the RF Level Units Selection Menu which shows the
current selection (see Fig. 3-25 below).
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General