E.F. Johnson Company 5100 ES, Руководство по эксплуатации

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ES Series Models II/III Portable Radio Operating Manual 3-3
General Operation
When the volume control buttons are used, the number of steps (ticks) required to change
the volume from the minimum level to maximum level is programmable for 2-50. For
example, if “20” is programmed, there are 20 adjustment steps from minimum to
maximum volume. Only one volume control button can be programmed if desired and
wrap-around then occurs after the maximum or minimum level is selected.
The radio can also be programmed so that volume control is also be disabled by the
Keypad Lock feature.
The minimum volume level that the volume control can select can be programmed. This
can be used to prevent missed messages caused by unintentionally turning the volume
down too far. Relative levels of 0-255 can be set in steps of 1 (“0” sets the lowest
minimum volume).
Note This setting is applicable to 51xx and Ascend portable radios .
The relative volume level can be determined by the position of the index on the volume
knob or by a reference signal as follows:
• If a key press tone is enabled, a short tone sounds when a key is pressed. Tones and
audio can differ depending on how it is programmed.
• If a conventional channel is selected and the Monitor option button or menu parameter
is programmed, pressing that button unsquelches the receiver and either voice or
background noise is heard (see Section 5.2). If a SMARTNET/SmartZone or P25
Trunked channel is selected, the receiver cannot be manually unsquelched.
3.2 Power-Up Password
The power-up password feature prevents unauthorized use of the radio by disabling it
when power is turned on until the proper password is entered. This feature is enabled or
disabled by programming.
When this feature is enabled, “Enter Pswd” is briefly displayed when power is turned on.
The password can be 1-8 digits in length, and consists of digits 0-9. It is entered as
follows. If an incorrect password is entered, “Incorrect” is displayed and it must be re-
entered.
DTMF Keypad Models - Enter the password using the 1-8 keys and then press the
Enter < F2 > button when finished. If a mistake is made, the last digit can be erased by
pressing the < F1 > (Clear) button.
Limited Keypad Models
- Select the proper number for each position by pressing the
Up/Down buttons. When the proper number for a position is displayed, select it and
move on to the next position by pressing the <
F2 > (Enter) button. If the password is
less than eight digits, press < F2> twice after the last digit.