LTC 5136 Series Instruction Manual Installation

4.4Installation Using an RS-232 Data Transmission Link to a Biphase

Camera Site (See Figure 6)

In this application, the RS-232 data that is generated by the Controller is connected directly to an RS-232 transmission link (fiber optics, microwave, dial-up phone modems, etc.). The RS-232 transmission link must be able to support an RS-232 simplex transmission rate of 9600 baud. At the other end of the RS-232 transmission link, the RS-232 signal is converted into Allegiant biphase protocol, using the supplied interface unit. The biphase data is then connected to the AutoDome cameras or Allegiant receiver/driver units.

Install one of the junction boxes supplied in the

LTC 8557 Series Kit (ordered separately) in a location close enough to the Controller unit so that the supplied 3 m (10 ft) data cable can be used. If desired, four holes are provided for mounting the LTC 8557 Series junction box to a flat surface. The power supply (to power the Controller) should also be located near the LTC 8557 Series junction box. Connect the bayonet style connector of the power supply cable into the jack located on the side of the junction box. If the power supply cable must be attached to the power supply, the polarity is not important; the Interface Unit is not polarity sensitive. Plug the power supply into a suitable AC power source.

Connect the supplied 3 m (10 ft) data cable with two RJ-11 connectors, between the Controller unit and the junction box. The orientation is not important -- either end may be connected to either device.

Connect an appropriate length of cable (not supplied) suitable for use with RS-232 signals, between the LTC 8557 Series junction box and the RS-232 transmission device. If the distance between the box and device is much over 20-30 m (60-90 ft), the use of user-supplied short haul modems or other RS-232 line extender devices may be required. These devices must be able to support an RS-232 simplex transmission rate of 9600 baud.

The LTC 8557 Series junction box provides a removable screw terminal block for the data connections. The terminal block has four connections marked 1, 2, 3, & 4. See Figure 2, Junction Box Supplied with LTC 8557 Series Kit.

Pins 1 and 2 are not used. Pin 3 is the Controller’s RS-232 TX output, and Pin 4 is the Signal Ground connection. Be sure to use cable suitable for RS-232

EN 9

signals. Connect the wire from terminal 3 to the RX connection of the RS-232 transmission device. Respectively, connect the wire from terminal 4 to the data ground connection.

At the camera side of the RS-232 transmission device, install the interface unit in a convenient location where it can easily be connected to the transmission device.

NOTE: The interface unit is rated for indoor use only. If desired, use the four holes provided to mount the box to a flat surface.

Connect the bayonet style connector of the power supply cable into the jack located on the side of the interface unit. If the power supply cable must be attached to the power supply, the polarity is not important; the Interface Unit is not polarity sensitive. Plug the power supply into a suitable AC power source.

Connect a transmit wire and a signal ground wire from the RS-232 transmission device to the desired input on the interface unit. Either the RJ-11 or the 9-pin D type connector input may be used. Refer to the Data Converter Pinouts section for the appropriate pin connections.

Next, connect the biphase control code outputs of the interface unit to the data cable. Typically, a single camera site receiver/driver is connected to a single output, but each biphase output of the interface unit is rated to handle up to eight (8) receiver/drivers when connected in a daisy chain configuration, to a maximum of 1.5 km (5000 ft). For a daisy chain connection, the cable is looped through each AutoDome camera or receiver/driver along the way. The last (and only the last) unit in the daisy chain connection should be terminated. All other receiver/drivers should have the terminating resistor removed when the looping cable is connected.

Connect shielded twisted pair cable (Belden 8760 or equivalent) between the camera site receiver/driver and the biphase output connections located on the interface unit. The removable terminal blocks have three connections: (+), (–), and (S [Shield]). See FIGURE 1, Interface Unit Supplied with LTC 5136.

Select and maintain a wire color convention to avoid confusion at the camera site(s).

Example: White to (+), Black to (–), and Shield to (S).

NOTE: The shield terminals of the interface unit are connected to the Shield wire of the cable.

Bosch Security Systems 08May 2013

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Bosch Appliances LTC 5136 installation instructions Bosch Security Systems 08May
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LTC 5136 specifications

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