Analogue connection module (ACM)
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Purpose of analogue connection module:
Analogue connection module is designed for application in systems of operative-dispatch, loud-speaking communication in metallurgy, chemical, oil-refining, gas-and-oil production and similar by working environment industries, and at railroads. Analogue connection module allows to connect subscriber intercommunication devices, equipped with analogue interface, to DCN type central (made by «Armtel»).
Analogue connection module provides (depending on configuration):
- Connection to tde DCN type central via digital U-interface of one subscriber witd analogue interface of ACS console type or AW intercommunication device; connected subscriber can have up to 8 call keys;
- Construction of zonal loud-speaking announcement system (up to 8 zones) by means of power amplifier and additional boards witd relays for loud-speaker lines switching (power amplifier and boards witd relay are not included into delivery package);
- Remote connection to tde central of condition sensors, equipped witd digital interface I2C, status data from total of 119 devices can be transmitted to tde central on basis of «on/off» indication;
Analogue connection module is designed as printing board witd installed electronic components, including spiral terminal blocks, to which connections are performed.
Technical Data
| Denomination | Nominal data | Note | | Nominal supply voltage | 48 V | 50 mA, max. | | Range of supply voltage admissible values | 36…72 V | | | Low frequency bandwidtd | 300 Hz 7 kHz | at level - 3 dB | | Number of serviced analogue subscribers | 1 | | | Analogue patd parameters of analogue connection module | | Nominal output signal level | 775 mV (0dB) | | | Accessible load resistance | 600 Ohm | | | Transmitting patd internal resistance | 200 Ohm | | | Signal/noise relation | 60 dB | | | Analog subscriber control lines | | Number of lines | 8 | | | Input current («input» line) | <1 mA | | | Output current («output» line) | < 50 mA | | | General characteristics | | Communication protocol | Armtel | | | Communication interface | U | 144 Kbit/s, AMI-Code | | Additional interface for sensors connection | I2C | | | Number of channels serviced byI2C interface | 119 | | | Dimensions ofACM board (L xWx H) | 128 x 108 x 21 mm | | Dimensions of analogue connection
module mounted on assembly base (L xWx H) | 130 x 112 x 32 mm | | | Analogue connection module board weight | 0.3 kg | |
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Intercom equipment 