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MTI DOC 91743-A1

 

SPECIFICATIONS 

 

Auxiliary Interfaces

 

Power/Audio Ports 

 

 

 

Two – five position connectors 

 

Power 

Power Supply Voltage 

 

 

12V DC (+/- 10%) 

Power Supply Current (max)   

 

2A 

 

Audio 

Speaker Buss Interface 

 

 

25V Line 

Max Output Power (talk mode) 

 

2W 

Max Paging Power (page mode) 

 

60W (requires external paging amplifier) 

Total Harmonic Distortion 

 

 

<1% 

Frequency Range 

 

 

 

100 Hz to 12 kHz 

Sample Rate   

 

 

 

8 kHz 

Sample Resolution 

 

 

 

8 or 16 bit 

 

Network 

Interface 

 

 

 

 

10/100 Ethernet RJ-45 port (100Base-T) 

LED Indications 

Run Mode 

 

 

 

 

Green (blinks on and off once a second) 

Audio Transmit – Talk Mode  

 

Red (solid on) 

Audio Transmit – Page Mode  

            Red (blinks on and off once a second) 

Network Activity 

 

 

 

Green 

Network Status 

 

 

 

Amber 

 

Network 

Interface 

 

 

 

 

10/100 Ethernet RJ-45 port (100Base-T) 

 

Environmental 

Operating Temperature  

 

 

32

 to 120

Storage Temperature   

 

 

-40

 to 149

Operating Humidity   

 

 

20% to 85%, noncondensing 

Maximum Humidity Gradient 

 

10% per hour 

Operating Altitude 

 

 

 

-50 to 10,000 ft  

Physical 

Construction   

 

 

 

UL94V-O Flame Retardant ABS 

Finish   

 

 

 

 

Black 

Dimensions 

 

 

 

 

6”Lx5.25”W 

Mounting  

 

 

 

 

Din Rail 

Unit Weight   

 

 

 

1.15 lbs 

Summary of Contents for 91743

Page 1: ...MTI DOC 91743 A1 MTI Digital Intercom Amplifier Part Number 91743 Simple Reliable and Cost Effective Technology I N S T A L L A T I O N ...

Page 2: ...T OVERVIEW 3 CONNECTING TO THE NETWORK 4 CONNECTING POWER 4 CONNECTING THE SPEAKER BUSS 4 CONNECTING A PAGE AMPLIFIER 5 BEFORE YOU BEGIN 6 PARTS LIST 6 PRODUCT SERIAL NUMBER LABEL PLACEMENT 6 INSTALLATION 7 START UP 7 SPECIFICATIONS 8 FEATURES 9 APPENDIX 11 ...

Page 3: ...flash every second When the amp is in talk mode the red LED will be solid on The red LED will flash every second when in page mode Primary volume adjustment can be achieved remotely using MTI ProVision software If additional receive volume adjustment is needed the potentiometer on the front panel can be used ELO DATA CONVERTER 12V COM D1 D2 CLK CHAN 1 12V COM D1 D2 CLK CHAN 4 CHAN 5 CLK D2 D1 COM ...

Page 4: ...MTI DOC 91743 A1 Figure 2 Typical MTI Intercom System Diagram 2 MTI Touch Screen MTI Handheld Network 91743 Digital Amplifier Page Out Page In Paging Amplifier 8 1 1 2 9 8 1 1 2 9 9 SPK Buss 25V Line ...

Page 5: ...MTI DOC 91743 A1 PRODUCT OVERVIEW Figure 3 91743 Digital Intercom Amplifier Connections 3 ...

Page 6: ...o power conductors to the appropriate power source The 91743 ships with a 12V DC power supply which already has the five position connector pre terminated CONNECTING THE SPEAKER BUSS The 91743 Digital Intercom Amplifier is intended to be used with MTI 81129 229 termination boards and 25 volt line audio devices The speaker buss from the amplifier connects to the termination boards which distribute ...

Page 7: ...output of the paging amplifier When the amplifier is in page mode the output of the paging amplifier is directly connected to the MTI speaker buss This allows 25 or 70 volt paging speakers to be used depending on the output of the paging amplifier Typical page amplifier hookups can be seen in the Appendix To connect a MTI 91743 to a paging amplifier 1 Connect two appropriately sized conductors to ...

Page 8: ...IST Qty Description 1 MTI 91743 Digital Intercom Amplifier 1 12V DC Power Supply 1 91743 Installation Manual MTI DOC 91743 A1 1 Product Serial Number Label attached to the bottom of the 91743 case PRODUCT SERIAL NUMBER LABEL PLACEMENT The product serial number label helps identify your 91743 Digital Intercom Amplifier in the event that your 91743 requires service The serial number label is located...

Page 9: ...w properly To install the 91743 to a back plate 1 Install the din rail on the back plate 2 Mount the 91743 on the din rail STARTUP To start the 91743 Digital Intercom Amplifier 1 Make all required connections as discussed in the Product Overview section 2 Turn on the intercom system and verify the proper operation of the 81129 229 termination boards 3 Turn on the MTI intercom amplifier and associa...

Page 10: ...rface 10 100 Ethernet RJ 45 port 100Base T LED Indications Run Mode Green blinks on and off once a second Audio Transmit Talk Mode Red solid on Audio Transmit Page Mode Red blinks on and off once a second Network Activity Green Network Status Amber Network Interface 10 100 Ethernet RJ 45 port 100Base T Environmental Operating Temperature 32 to 120 F Storage Temperature 40 to 149 F Operating Humidi...

Page 11: ...ting with use of a backplate 6 With the use of the MTI ProDesign suite stations can be assigned labels based on an alpha numeric numbering system This allows the designer to assign station names numbers based on a numbering system or a text based naming system 7 With the use of the MTI ProVision application the intercom system can provide master to master calling and or master to station calling 8...

Page 12: ...und card or via a handset option e The system can be configured to allow any master station control over any intercom or to refuse control of any call station or paging zone to any master station Furthermore through the use of operator security levels access to individual call stations can be allowed or denied based on the operator s permissions Also call station access can be managed through the ...

Page 13: ...N PGOUT PGOUT Figure 5 Typical Hookup for Line Level Page Amplifier Inputs PGIN PGIN 91743 Digital Amp PGOUT PGOUT Input GND Input Input Output B Output B Line In Line In COM Page Amp Radio Design Labs STM 2 25V Figure 4 Typical Hookup to a Burtek AT 340 Paging Amplifier 8 11 ...

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