Phonic Ear LOGIBIT 1200 Manuale utente

LOGIBIT 1200

MANUAL

TABLE OF CONTENTS

1. FEATURES ON THE CONTROL PANEL............................................................... 1

2. MENU STRUCTURE................................................................................................. 2

2.1 Function keys............................................................................................................................ 2

2.2 Menu points.............................................................................................................................. 2

2.3 Illustration of menu structure.............................................................................................. 5

3. FEATURES ON THE BACK PANEL......................................................................... 8

3.1 General....................................................................................................................................... 8

3.2 Options...................................................................................................................................... 10

3.3 Installation of front to 19” rack............................................................................................ 11

3.4 Fuses and 115/230 volt AC exchanger................................................................................ 11

3.5 Control port............................................................................................................................. 12

3.6 Serial port.................................................................................................................................. 13

4. SAFETY INFORMATION......................................................................................... 14

5. APPROVAL................................................................................................................ 14

6. BLOCK DIAGRAM.................................................................................................... 15

7. SPECIFICATIONS..................................................................................................... 16

7.1 Technical data............................................................................................................................ 16

7.2 Special functions...................................................................................................................... 17

7.3 Options...................................................................................................................................... 17

LogiBit 1200 manual Table of Contents

1. FEATURES ON THE CONTROL PANEL

➀ On/Off Switch: This switch switches the ampliﬁer on and off.

➁On indicator: This green LED lights when the ampliﬁer is on.

➂LA +18 dB indicator: This red LED lights, when the signal level on the teleloop

ampliﬁer has reached maximum. With correct ampliﬁer

adjustment this LED should never light.

➃INPUT +10 dB indicator: This red LED lights, when any one of the two to ﬁve +10 dB

indicators on the back of the ampliﬁer lights. With correct

ampliﬁer adjustment this LED should only blink when there are

loud passages otherwise the level of the signal fed to the input

of the ampliﬁer is too high.

➄REC indicator: This green LED lights, when REC function is chosen. The green

LED is turned off, when the play function is chosen.

➅AGC indicator: This green LED lights, when the AGC-circuit is active.

➆Display

➇4 function keys: The LogiBit 1200 ampliﬁer’s 4 function keys are described in

section 2.1 Function keys.

LogiBit 1200 manual Features on the Control Panel

➀

➁➂

➃➅➆➄➇

LogiBit 1200 manual Menu Structure

➁

➂

➃

➀

2. MENU STRUCTURE

2.1 FUNCTION KEYS

➀LEFT/UNDO: With this key you can move to the left in the menu structure.

The key is also used to undo changes in a parameter, which has

not already been saved.

➁UP/INCREASE: With this key you move upward in the menu structure. It can

also be used to change/increase a parameter.

➂RIGHT/SAVE: With this key you move to the right in the menu structure. The

key is also used to save changes in a parameter.

➃ DOWN/DECREASE: With this key you move downward in the menu structure. The

key is also used to change/decrease a parameter.

2.2 MENU POINTS

SERVICE MODE: The individual parameters in the ampliﬁer can only be changed

when the LogiBit ampliﬁer is in SERVICE MODE. To do this you

must switch off the ampliﬁer at the on/off switch, then while

holding function key ➁up/increase and ➃down/decrease in at

the same time, turn on the ampliﬁer. Display will show

“SERVICE” for a short period. If the LogiBit ampliﬁer is

not put in SERVICE MODE the only parameters that can be

changed are RECORD and CONTRAST.

WARNING! The above may only be carried out by authorized Phonicear

personnel. It is strongly advised that no unauthorized

person is allowed to put the ampliﬁer in SERVICE MODE.

LogiBit 1200 manual Menu Structure

RECORD: Select “ON” when recording thereby switching off TAPE INPUT.

This avoids feedback in situations where a tape recorder is

connected to both TAPE INPUT and TAPE OUTPUT. In the

“OFF” position both TAPE INPUT and TAPE OUTPUT are

active. REC ON/OFF function can also be changed without the

ampliﬁer being in SERVICE MODE.

CONTRAST: Used for adjusting the contrast in the display. Contrast can also

be adjusted, without the ampliﬁer being in SERVICE MODE.

CODE: In connection with an upgrading of a LogiBit 1200 to a LogiBit

1260 it is necessary to type in a code (see also the next point

ID). After the code has been typed in, the ampliﬁer should be

switched off for a short period to allow the upgrading to take

effect.

ID: Before you can receive the code used in upgrading a LogiBit

1200 to a LogiBit 1260 it is necessary to give the ID-number of

the ampliﬁer to your Logia dealer.

AUTOCAL: In connection with a new installation, changes of the area size or

changes in the dimensions of the teleloop cable, AUTOCAL

shall be “ON” the ﬁrst time the ampliﬁer is turned on. In this

position the ampliﬁer calibrates with the teleloop cable. When

the calibration is ﬁnished AUTOCAL should be in the “OFF”

position. Thereby you avoid hearing on the teleloop the calibra-

ting signals the ampliﬁer uses when it is turned on. After the

ampliﬁer has completed its calibrating procedure for the ﬁrst

time, the current in the teleloop cable will automatically

be set to 1 ampere. LA VOL will be automatically set to 0 dB.

LA VOL: Used to adjusting the current in the teleloop cable and thereby

the strength of the magnetic ﬁeld. After the ampliﬁer has

completed its calibrating procedure for the ﬁrst time, the

current in the teleloop cable will automatically be set to

1 ampere. LA VOL will be automatically set to 0 dB.

BASS: Select BASS to adjust the bass on the teleloop signal.

AGC MODE: Menu point REMOTE allows, that the AGC-circuit can be

switched on and off via the 25 pin Sub-D port marked

CONTROL on the back panel of the ampliﬁer. Select “OFF” to

switch off the AGC-circuit. Under normal operating conditions,

select “ON”, to activate the AGC-circuit.

AGC GAIN: Used to adjust the number of required dBs that the AGC-circuit

should use to strengthen a weak signal. The AGC-circuit is able

to reduce a powerful signal with up to 20 dBs.

TREBLE: Select TREBLE to adjust the treble on the teleloop signal.

MIC.1- 5: Select this menu point to change the parameters for respectively

microphone and line-in 1-5. Microphone and line-in 3-5 are not

standard, but can be built in as an option.

VOLUME: Used for adjusting the signal level immediately before mixing

point. As a starting point choose 0 dB. If the output signal is

distorted, this parameter should be reduced.

REMOTE: REMOTE set to “ON” allows mute of line-in via the 25 pin

Sub-D port marked CONTROL on the back panel of the

ampliﬁer.

MIX.OUT: This menu point determines, whether a signal connected to an

input can be heard on the teleloop (LA) or not (NONE).

TA P E : Select TAPE to change the parameters for TAPE INPUT.

VOLUME: Used for adjusting the signal level immediately before mixing

point.As a starting point choose 0 dB. If the output signal is

distorted, this parameter should be reduced.

MIX.OUT: This menu point determines, whether a signal connected to an

input can be heard on the teleloop (LA) or not (NONE).

REC.1 & 2: Select this menu point to change the parameters for the wire

less receiver modules. The wireless TOA receiver modules are

not standard, but can be built into the ampliﬁer as an option.

VOLUME: Used for adjusting the signal level immediately before mixing

point.As a starting point choose 0 dB. If the output signal is

distorted, this parameter should be reduced.

STARTUP: Select “ON” and the wireless TOA receiver modules are turned

on, when the ampliﬁer is turned on. Choose “OFF” and the

wireless microphones are switched off when the ampliﬁer is

turned on.

REMOTE: REMOTE set to “ON” allows the wireless TOA receiver

modules respectively switch on and off via the 25 pin Sub-D

port marked CONTROL on the back panel of the ampliﬁer.

MIX.OUT: This menu point determines, whether a signal connected to an

input can be heard on the teleloop (LA) or not (NONE).

LogiBit 1200 manual Menu Structure

2.3 ILLUSTRATION OF MENU STRUCTURE

LogiBit 1200 manual Menu Structure

14 15 16 19 20 21

17 18 11

➉12

LogiBit 1200 manual Features on the Back Panel

➀

➁

➂

➃➄

➅➈

➆

➇

➉

3. FEATURES ON THE BACK PANEL

3.1 GENERAL

➀LA OUT: The teleloop cable is connected here. You should be aware of

the demands made regarding the dimensions of the teleloop

cable.These demands are described in section 7.1 Technical

data. Read safety information in section 4. Safety information.

➁POWER SOCKET: The three pin power cord is plugged in here.

WARNING: Do not try to bypass or remove the earth, or

you run the risk of getting an electric shock.

➂FUSE COMPARTMENT: This contains the AC fuses. The fuse compartment makes it

possible to choose between 230 volt AC or 115 volt AC.

NB! See AC fuses in section 3.4 Fuses and 115/230 volt AC

exchanger. Changes may only be carried out by qualiﬁed

personnel.

➃SERIAL PORT: This nine pin Sub-D (female) port makes it possible to change

the parameters via Windows® 95 PC Control Software

(OPTION). See also section 3.6 Serial port.

➄CONTROL: This 25 pin Sub-D (female) port makes it possible to remote

control the LogiBit ampliﬁer via external contacts and an

external potentiometer. See also section 3.5 Control port.

➈

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