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I.S. INTERCOM

20-278-12

TYPE ABMA4 USER MANUAL

8 OF 21

Issue: 05

6. Watchdog kicks

‘Watchdog’ is a background task that continuously monitors for tasks that have locked up (i.e. stopped). If
the task stops for more than 10 seconds, then it is kicked and the unit resets.

4. GENERIC DISPLAY DECRIPTION

When the unit powers up after going through the Austdac logo and version information, the Generic (default)
graphical mode is displayed on the LCD as seen below:

Figure 2: LCD Generic View

The LCD display is separated into three sections using bars. The top left shows battery health and speaker
volume state. Right of the bar shows external health of interface to PSA controller. The left bottom shows a
message box area for display messages such as ‘SPEAK’ when the SPEAK key is pressed.

Battery and Speaker Health Icons

Icon explanation:

Icon:

Full battery and not charging

Partly full battery and charging

Dead battery and charging

Dead battery, charging fault

Good Speakers (low volume)

Good Speakers (med volume)

Good Speaker (high volume)

Bad Speakers (speakers not
connected)

Table 1: Top Left Generic Icons

The current icon has bars that fluctuate from one bar to five bars depending on how much charge current is
flowing.

The hardware can show left or right speaker faults or both, as shown above. While in Generic Display view,
you can change the speaker output volume by pressing the up or down keys.

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Содержание ABMA4

Страница 1: ...Title I S INTERCOM TYPE ABMA4 USER MANUAL Document Number 20 278 12 Issue 05 ...

Страница 2: ...s the property of Austdac Pty Ltd It is subject to its recall and must not be reproduced in part or whole or its contents divulged to third parties without prior written approval from Austdac Pty Ltd TABLE OF CONTENTS TABLE OF CONTENTS 2 PHOTOGRAPHS 3 FIGURES 3 TABLES 3 1 GENERAL DESCRIPTION 4 2 OPERATIONAL DESCRIPTION 6 3 BACKGROUND OPERATIONS 6 1 Detection of PSA 6 2 Detection of Speech for Spea...

Страница 3: ... View 10 Figure 6 Setting menu 10 Figure 7 Volume Menu View 11 Figure 8 Test Speaker Menu View 11 Figure 9 Test Speakers Completed View 12 Figure 10 Mute Level Menu 12 Figure 11 Password Access screen 13 Figure 12 Set Mute Level Low 13 Figure 13 Set Mute Level Medium 13 Figure 14 About Menu logo 13 Figure 15 About Menu Information 14 Figure 16 Simplified Un Shielded Circuit 14 Figure 17 TEU Fault ...

Страница 4: ...along the conveyor belt The LCD display allows the operator to view operational and maintenance information about the intercom and the PSACS1 system A conversation with another worker along the conveyor belt can be initiated by pressing the local call button once or several times The local call button is used to signal or attract the attention of workers along the conveyor The local call button ca...

Страница 5: ...ttery removed In the LO position the battery charge current is 11mA and 22mA in the HI position Refer to the system drawing for the correct charge rate for your intercoms Generally the HI position is used in systems with short powered segments and fewer intercoms the LO position is used in long powered segments with more intercoms Photograph 3 Battery type 5 NH 1 N side view ...

Страница 6: ...at These are as follows 1 Detection of PSA Pre Start Alarm 2 Detection of Speech for Speaker Mute Control 3 Detection of Low R Line Voltage 4 Pressing of SPEAK key 5 Switching between Sleep and Deep Sleep modes 6 Watchdog kicks 1 Detection of PSA The unit continuously detects for a PSA paired tone signal on both the V line and S line The V line is the audio signal from the PSA Controller and the S...

Страница 7: ...e ZERO will be displayed beneath R line Bar graph 4 Pressing of SPEAK key On pressing of the SPEAK key a press to talk PTT action the unit will wake up momentary if asleep and display SPEAK in the message text box on the Generic mode of the LCD screen The ABMA4 will turn off speakers and turn on the microphone The unit will return to sleep mode as soon as Speak key is release 5 Switching between S...

Страница 8: ...state Right of the bar shows external health of interface to PSA controller The left bottom shows a message box area for display messages such as SPEAK when the SPEAK key is pressed Battery and Speaker Health Icons Icon explanation Icon Full battery and not charging Partly full battery and charging Dead battery and charging Dead battery charging fault Good Speakers low volume Good Speakers med vol...

Страница 9: ...e a fault then the unit cannot see the PSA controller and will display an un tested PSA icon See System Test section below Text Box The text box area of the screen provides the user with text information referring to the operation of AMBA4 For example it displays SPEAK when the speak key is pressed or LOW LINE VOLTAGE when the R line voltage is low 5 CONFIGURATION MENU DESCRIPTION While in Generic...

Страница 10: ...ine View Figure 5 gives a reading of the R line voltage and PSA loop status As in Generic mode the PSA loop shows the health of the V and S lines to the PSA controller in this menu In addition in this menu you have time and confirmation of the last PSA If Cnfrm has Y next to then directly above it will have the time in hh mm ss since the last PSA was confirmed If Cnfrm has N next to it then PSA ha...

Страница 11: ...ew The Volume of the speaker output can be adjusted using the up or down keys You have three levels LOW MED and HIGH The volume icon changes depending on different volume levels The settings can be used to set the speaker volume level depending on your current position along the system cable You can exit at any time by pressing the Menu or Enter key 2 Test Speakers This Configuration Menu function...

Страница 12: ...d adjust the mute level for noisy environments such as background electrical noise or RF pickup which will cause speakers to open turn on The default level is set to Low noise There is a setting below that called Clean for very electrically quiet areas and two setting above that called Med and High for noisier areas The menu is shown Figure 10 Mute Level Menu To enter a menu option eg View Mute yo...

Страница 13: ...vel Low Figure 13 Set Mute Level Medium 4 About Menu The About menu show Austdac Logo and information on the product model and software version To exit either press Menu or Enter keys The following screen will be displayed Figure 14 About Menu logo After a further two second the following information will be displayed ...

Страница 14: ...system components The smaller conductors are the ones that have a foil sheath in the G2000 and G2000B cables The connection of foil sheath and drain wire is critical for correct installation You must either use the shield cable correctly with the ABMA4 R Line Common line terminated with a shield drain wire at each ABMA4 or not use a shield foil drain wire at all which is the Austdac default method...

Страница 15: ... a PSA Loop to confirm status to get a System Test Passed You should check that the Last PSA Confirm time is correct by going into Comms Line menu see Configuration Menu Description and Fault Analysis below If you get a PSA confirm from the controller but a ABMA4 unit doesn t show PSA Loop confirmation then fault is not in the system cable but between this cable and the unit itself i e V and S lin...

Страница 16: ...nlarged PSA Loop Icon for easier readability The reasons for TEU not working are that it has been installed incorrectly the cable too long or that it is mixing with an old BMA intercom i e such as LEGACY INTERCOMS DAC TYPE STAGE II which don t have any current limiting so that if the system is heavily used the current usage goes up and line voltage drops Analysis 2 There is a break in the V line T...

Страница 17: ...se as the signal may not reach the end ABMA4 unit The easiest analysis would involve just a walk down the system cable and a look at each generic display i e wakeup each unit with a menu key press to work out where the V Line tick changes to a cross Then the break will occur between these units Unfortunately because of the nature of system cable and installation history how each ABMA4 interprets t...

Страница 18: ...lay will only show a PSA loop status from the last received PSA and if the V Line is cut then the ABMA4s that do not have any V Line signal do not update So they will display two ticks You must remember see fault flow diagram that a fault occurred because you did not get a confirmation from the PSA Controller You can also check the Comms Line menu see Configuration Menu section above to see when t...

Страница 19: ...system OK or not The example above shows how the ABMA4 graphical display can help determine where the S Line break has occurred This method is easier to analyse than the V Line break because all ABMA4 units will have updated screens The method of detection is just a matter of walking between the TEU and PSA Controller and determining where a tick changes to a cross on the S Line As shown in the fi...

Страница 20: ...ones back from the TEU will not happen You will only get a hee sound after the break and the PSA controller will not get a confirmation Again this should be your primary method of determining if the system OK or not The examples below show an enlarged R Line bar graph Icon at varying states depending on where the R line has been broken cut Figure 24 R Line break at the front Figure 25 R Line break...

Страница 21: ...If you would like more accuracy reading than the bar graph 0 5 you can go into the Comms Line menu see Configuration Menu section Analysis 5 There is combination of the three above Using the graphical display on the ABAM4 you can work out which units can see a V Line an S Line and or an R M Line From this you can analyze the state of the system cable 8 HANDSET In special cases an ABMA4 can have a ...

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