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Power-Up
The ES4000A channels power-up identically to channels 1 and 2 of the US2000A.
Refer to the US2000A User Instructions for all power-up information.
Sidetone Adjustments
Use the sidetone adjustment procedure as described in the US2000A User Instruc-
tions, except substitute channel 3, channel 4, etc. The locations of the ES4000A side-
tone trimmers are shown in Figure 15
.
Operation
The ES4000A channels operate identically to channels 1 and 2 of the US2000A. Re-
fer to the US2000A User Instructions for all operating information.
25
Ch 6
Sidetone
Ch 3
Sidetone
Ch 4
Sidetone
Ch 5
Sidetone
Figure 15. Sidetone Trimmer Access on Bottom of ES4000A