Installation manual

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Operator Manual for Mastercall MC-4044 Series 8 G99120A Issue 3 Page 12
SPECIFICATIONS
AMPLIFIER
Frequency Range 300 Hz to 3.4 kHz (-3dB).
Input - Output Impedance 220 ohm + 120 nF // 820 ohm (complex).
Return Loss > 17 dB, 300 Hz to 3400 Hz.
Insertion Gain 30 dB +/- 2 dB maximum.
Output Level -10 dBm → 0 dBm programmable.
Noise < -50 dBm unweighted, 300 Hz to 3.4 kHz.
Method of operation Software controlled semi/full duplex.
CONTROL LOGIC
Micro-controller Motorola MC68HC16Z1CPV16.
Random Access Memory 8K static.
Program Memory
Firmware Storage Medium 2 x 64K byte (512 bits) EPROM.
System Number V492713
Speech Number V492600
Interface 8 bit latched data.
Number, Status & Option Storage Electrically Erasable Programmable Read Only Memory (EEPROM).
Dialling Pulse (Decadic) Electronic, controlled by processor.
10 pps. 34/66 Mark/Space ratio.
Tone (DTMF) Electronic, controlled by processor.
70 ms on, 70 ms off.
Number Storage 1 → 8 phone numbers of up to 23 digits each (local, STD or IDD calls),
programmable from Keypad or remotely by telephone.
COM ports RS 232C
Displays Single digit 14mm 7 segment LED.
Power On LED (Red).
Divert On LED (Yellow).
Line1, Line 2, Transmit and Tone LEDs (green).
Controls 12 button keyboard.
RECORDED VOICE ANNOUNCEMENTS
Standard Voice Announcements
Storage medium EPROM.
Recording method 32K bit/sec ADPCM.
Personalised Voice Announcements (Optional)
Storage medium Linear EEPROM.
Recording method Analogue, time sampled at 8 kHz.
Record time Up to 60 seconds.
DETECTORS
Activity detector
Sensitivity Software adjustable.
DTMF detector
Sensitivity > -40 dB.
Detect time > 50 ms.
Dial Tone detector
Frequency range 380 Hz - 550 Hz.
Sensitivity > 50 mV.