The DADS-01 has sophisticated audio level detection algorithms that enable thresholds with delays to be programmed on each of its three input sources (2 digital, 1 analog).

The DADS-01 offers the following features:

• Normal and Low Level threshold settings on all input sources (0-99dBFS)
• Normal and Low Level delay on all input channels (0-99 s)
• Automatic or manual operation
• Rear panel monitoring and control I/Os
• USB port for connection to a PC or a Davicom RTU(DV-Micro, DV-Mini or DV-208/216)
• 2 digital audio inputs, 1 analog audio input, 1 digital audio output
• Test Tone -20 dBFS (1 kHz on Left channel, 400 Hz on Right channel)
• Audio pass-through in case of power supply failure
• Hardware Reset from rear panel connector
• Auto reset on low voltage supply detection
• Jumper selectable bypass on power-fail (AES IN1 or AES IN2 to AES OUT)
• Jumper selectable sampling rate on analog input (32 kHz to 192 kHz)
• Jumper selectable sensitivity on analog input

The post About the DADS-1 appeared first on Davicom Exchange Support Portal (DEX).

The FMBM offers the following features:

• Synthesized tuning
• Non-volatile configuration storage
• On-site monitoring of transmitter power
• Off-air monitoring of receive signal strength
• FM deviation measurement and alarms
• Multiplex Input/Output (model -02 only)
• Selectable pre-emphasis on analog and digital audio outputs (model -02 only)
• AES digital audio output option (model -02 only)
• Carrier frequency measurement and alarms
• RDS/RBDS decoding
• Balanced audio output on back panel and headphone output on front
• Alarm contacts for:
  • stereo absence
  • high deviation
  • low deviation
  • low power
  • carrier frequency drift
• All alarm levels are settable by the user, locally or remotely
• Full remote control and monitoring through any Davicom unit via the USB interface
• EMI / RFI Shielded.

Designed for full and easy integration into the Davicom’s powerful control and monitoring structure, the FMBM gives you the benefit of remotely monitoring the key RF parameters of your AM or FM transmitter to ensure regulatory compliance.

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The MEXM uses the Modbus communications protocol and can be used with third party Modbus equipment. However, when used with a Davicom unit, communication is completely transparent and does not require any technical knowledge of the Modbus protocol.

The table below shows how many analog (metering), digital (status) and relay I/Os are available on two MEXM models that are currently available (the MEXM-1 and MEXM-2).

Number of I / Os

MEXM-1 / MEXM-2 I/O distribution

The MEXM-1 adds 24 analog, 24 digital and 24 relay outputs to any Davicom unit while the MEXM-2 adds 64 digital inputs. The additional I/Os can be accessed and programmed through DavLink’s software as easily as the Davicom’s standard I/Os. The MEXM’s I/Os scan rate depends on the number of units connected and the communication mode selected. The maximum achievable scan rate is close to 10 Hz.

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MEXM autodetection by the Davicom

Autodetection is possible for both RTU and TCP connection mode. Note that these two modes are exclusive: mixed communication modes (simultaneous operation in both RTU and TCP mode) are not possible.

To add a MEXM to a Davicom unit configuration:

RTU MODE:

• If more than one MEXM is used: plug all units together in daisy-chain
• Set the communications-mode selector switch to any position between 1 and 7
• If more than one MEXM is used, make sure the communications-mode selector switches are set to different positions for each unit
• Power up the units
• Connect the USB cable from the first MEXM-1 to the Davicom unit
• In DavLink, go to Unit Configuration / Devices / ModBus and click on AutoDetect

TCP MODE:

• Set the communications-mode selector switch to position 0
• Connect the ETHERNET cable to the MEXM and to the Davicom
• Power up the MEXM
• In DavLink, go to Unit Configuration / Devices / ModBus and click on AutoDetect

Manually adding a MEXM as a Modbus slave in TCP

Go to Unit Configuration / Devices / ModBus Setup window and check that the settings are as shown below:

Warning: the MEXM module checkbox must be checked for the MEXM to work properly.

To add another MEXM in TCP mode, select a blank entry in the Slave Setup table (image above) and fill out the fields with the same parameters except the IP address which must be different for each additional unit and within the same subnet.

Manually adding a MEXM as a Modbus slave in RTU

Go to Unit Configuration / Devices / Modbus Setup window and fill in the information as shown in the image below.

Warning: the MEXM module checkbox must be checked for the MEXM to work properly.

To add more MEXM units in RTU mode, you have to select a blank entry line in the Slave Setup table (image above) and fill in the blank fields with the same parameters except the RTU Address which must be the same as the one selected on the TCP / RTU communications-mode rotary switch of the MEXM.

Comm Loss settings

The Davicom can be configured to automatically signal an alarm, and/or enter Pause mode, when there is a communications problem between the MEXM and the Davicom. By default, the settings are set for: MAJ1 alarm call, Pause mode, High Sensitivity. These settings can be configured under the “Slave Problem” tab (see image below) when the MEXM is set to the TCP or RTU communications mode.

The High, Medium, Low Sensitivity settings increase the tolerance of the Davicom to communications errors before declaring a COMM LOSS

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To add MEXM devices to a Davicom Cortex in RTU or TCP.

RTU MODE (USB) – One MEXM

• Power-up the MEXM
• On the MEXM, set the 8-position rotary selector switch to position 1(position 0 is reserved for TCP mode)
• Connect a USB cable between the MEXM and one of the 4 rear Davicom Cortex USB ports
• The MEXM should be automatically detected. 
• To check this, in the Davicom Cortex top menu, go to Devices > MEXM and check that the MEXM is detected. If not, click on DETECT MEXM.
• The MEXM unit will appear in the list.

RTU MODE (USB) – Multiple MEXM (daisy chain)

• Power-up the first MEXM
• On the first MEXM, set the 8-position rotary selector switch to 1. Each MEXM selector switch must be set to a different position (position 0 is reserved for TCP mode)
• Connect a USB cable between the MEXM and the Davicom Cortex (rear panel)
• In the Davicom Cortex top menu, go to Devices > MEXM and check that the MEXM is detected. If not, click on DETECT MEXM
• Power-up the second MEXM
• On the 2^nd MEXM, set the 8-position rotary selector switch to position 2. Each MEXM selector switch must be set to a different position (position 0 is reserved for TCP mode)
• Using the provided RJ-9 telephone-like patch cable, connect this MEXM to the first MEXM
• In the Davicom Cortex top menu, go to Devices > MEXM and check that this MEXM is detected. If not, click on DETECT MEXM
• To add other MEXM devices, simply repeat these steps.

RTU MODE (USB) – Multiple MEXM (Davicom Cortex rear USB ports)

• Power-up the first MEXM
• On the first MEXM, set the 8-position rotary selector switch to 1. Each MEXM selector switch must be set to a different position (position 0 is reserved for TCP mode)
• Connect a USB cable between the MEXM and one of the 4 rear Davicom Cortex USB ports
• In the Davicom Cortex top menu, go to Devices > MEXM and check that the MEXM is detected. If not, click on DETECT MEXM
• Power-up the second MEXM
• On the MEXM, set the 8-position rotary selector switch to 2. Each MEXM selector switch must be set to a different position (position 0 is reserved for TCP mode)
• Connect a second USB cable between the MEXM and one of the 4 rear Davicom Cortex USB ports
• In the Davicom Cortex top menu, go to Devices > MEXM and check that this MEXM is detected. If not, click on DETECT MEXM
• Repeat the steps above to add other MEXM devices

TCP MODE (Network)

• Power up the MEXM
• Set the communications-mode selector switch to position 0 (TCP)
• Connect an Ethernet cable from the MEXM to one of the 4 rear Davicom Cortex Ethernet ports

• In the Davicom Cortex top menu, go to Devices > MEXM, then click on DETECT MEXM
• To add other MEXM, repeat the steps above.

Now that the MEXM unit(s) has (have) been detected, you can add the I/O points to your Davicom Cortex’s configuration. See this article for details on how to do this.

The post Connection and initial setup of MEXM devices with a Davicom Cortex unit appeared first on Davicom Exchange Support Portal (DEX).

In automatic mode, the input of highest priority is selected and if this input fails, the DADS-01 automatically switches to the next valid input. The DADS-01 switches back to the previous inputs when they return to normal.

The DADS-01 can be operated locally or can be remotely controlled either using its rear-panel I/Os or its USB port. It is important to mention that remote operation via the USB connector requires Davicom RTUs running firmware version 5.48 or higher. To update your firmware version, please go to the Software & Firmware page.

In case of power failure, all the settings are preserved except those regarding input prioritization in automatic mode. The DADS-01 is also equipped with a relay bypass by which one the two AES inputs is passively switched to the output according to JP16 and JP17 settings.

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Detailed Input/Output Pinout for MEXM-1

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Detailed Input/Output Pinout for MEXM-2

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Install the DTPI unit at a convenient location inside the building, close to a 120VAC power outlet. Install the temperature probes at the selected measurement points and run the cables to the DTPI unit.

Connect the probe wires to the DTPI probe inputs according to the following table:

The temperature probe wires can be connected directly to the terminal block on the left side of the DTPI unit or, alternatively, to the corresponding 1/8 stereo jack probe inputs located on the right side. Never use both connection types simultaneously for the same probe input (terminal block and stereo jack).

When using a 1/8 stereo plug for probe connection, refer to the following contact pinout for connector installation:

Operation

• Connect the AC/DC adapter cable to the power connector on the right side of the unit.

• During start-up, the top PROBE-1 display will briefly show the firmware version (ex. “100” means version 1.0.0).

• The PROBE-3 display will show the currently selected temperature scale, either °F or °C.

• After start-up, the unit will display the temperatures read by the probes. If no probe is connected to a probe input, or if the probe is defective, the corresponding display will show three dashes: “- – -“.

• Pressing on the °F/°C button will switch between the °F and °C scales. When releasing the °F/°C button, PROBE-3 display will show the selected temperature scale for approximately 1 second.

• An IP reset button restores the device IP address to its default value [192.168.1.210]. To reset the IP address, press the IP reset button and hold it until blinking dashes are seen on all displays.

• To change the default IP address, both a PC and an SNMP manager app are required. Free SNMP manager apps are available online.

• Connect to the unit using the default address and locate the following OIDs: dtpiIpAddr, dtpiIpNetMask and dtpiIpGateway. Default values are show in the table below:

• Change the values to those recommended by your IT specialist.

• To make the changes effective, remove power from the unit for a few seconds and then turn it back on again.

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