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From Figure 7:

(1) This field indicates the current band split selected.

(2) This is a numeric field that is used to align the receive squelch opening

level. This field will accept any hex value from 90 - E2 and any

decimal value from 144-226, depending on the current state of the

screen (Hexadecimal or decimal) displays. The bar indicator changes

with and provides a direct representation of the value of this field.

(3) This field is a display only field and indicates the minimum value that

can be selected.

(4) This field is a display only field and indicates the maximum value

that can be selected.

Squelch Settings

It is recommended to use the Conventional Method Of Adjustment

as described in the Service Section, but if it becomes necessary to adjust

the squelch using the Utility Program, keep in mind the following note:

1. Using the F1 Next or F2 Prev keys, toggle to the "Squelch Calibra-

tion" window.

2. The Chan Field should read "Low". Use the TAB key as a toggle

switch to change the frequency of the Chan field. The Chan Field

allows the user to select the frequency on which the radio will receive.

Note that there is only one squelch value which is used across the

entire band. For non-T/A selections, the receive frequency will be 45

NOTE

In normal radio operation, when software detects the first quick

burst of the squelch opening, the hysteresis adds a fixed number

of steps to the squelch value to loosen the squelch and keep it

open. PC Programming mode does not use the hysteresis soft-

ware routine. Therefore, without this routine, the test below must

detect the point when the audio just begins to bubble or chatter.

LBI-38898

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Ericsson EDACS MDX Betreibershandbuch Seite 23