Bosch Appliances LTC8786/50 Installation, Mounting, PC RS-232 Interface Using a 9-Pin Connector

EN Installation

5 INSTALLATION

5.1Mounting

The LTC 8786 Series Data Converters are rated for indoor use only. If desired, four (4) holes are provided for mounting the unit to a flat surface. See MOUNTING DIMENSIONS at the end of this document.

If using on a desktop, attach the supplied rubber feet to the bottom of the unit.

A cable suitable for use with RS-232 signals (not supplied) must be used between the RS-232 device and the LTC 8786 unit. If the distance between the RS-232 device and the LTC 8786 unit is over 20-30 meters (60-90 ft), the use of 'short haul modems' (not supplied) or other RS-232 line extender devices may be required. An RS-232 simplex transmission rate of 9600 baud will need to be supported by the link.

5.4PC RS-232 Interface Using a 9-Pin Connector

In this application, the LTC 8786 is connected directly to the serial port of a PC. The user-supplied software installed on the PC must be designed to output "Receiver/driver and AutoDome RS-232 Control Code Protocol" data. This RS-232 data is converted into Allegiant biphase protocol using the LTC 8786 unit. The biphase data is then connected to the AutoDome cameras or Allegiant receiver/driver units as described herein.

Attach an RS-232 standard null modem cable (part No. S1385) to the serial port of the PC. Connect the other end of the data cable to the 9-pin connector on the LTC 8786 con- verter unit.

Skip to the section on AUTODOME CAMERA OR RECEIVER/DRIVER SITE CONFIGURATION to complete the installation.

5.2 Power Supply Connections

Install the LTC 8786 unit within 1.8m (5.75) of the mains power source. Connect the 'bayonet' style connector of the power supply cable into the jack located on the side of the converter unit. Plug the power supply adapter into a suitable AC power source.

If the power supply must be located beyond 1.8m, the provided power supply cable can be extended, or replaced with an appropriate user-supplied cable. The LTC 8786 is not polarity-sensitive, so it does not matter which direction the cable is attached to the power supply adapter.

If desired, a user-provided power supply may be used with the data converter. A power supply having either a 15-20 VDC ± 10%, 400 mA or 12-18 VAC ± 10%, 400 mA output is required.

If necessary, replacement power supply adapters can be ordered as noted below:

120 VAC input: KBD-120PS Power supply and power cable.

230 VAC input: KBD-220PS Power supply and power cable.

5.5RS-232 Interface Using RJ-11 Connector

Connect one end of a suitable data cable to the RJ-11 jack on the LTC 8786 converter unit. The other end of the cable must now be interfaced to the RS-232 communication link. Only the RX and SIGNAL GROUND connections are required. The remaining pinouts should remain 'un-connected'.

If the distance between the RS-232 communication link and the LTC 8786 converter unit is greater than 3 m (10), install an appropriate length of cable suitable for use with RS-232 signals (user-supplied). Since the data format is an RS-232 simplex transmission, only 2 signal wires (DATA and GROUND) will be required.

If the distance between the LTC 8786 unit and the camera site is over 20-30 m (60-90 ft), the use of short haul modems (user-supplied) or other RS-232 line extender devices may be required. They must be able to support an RS-232 simplex transmission rate of 9600 baud.

The wiring pinouts of the LTC 8786 series is shown in the PINOUTS section.

5.3 Data Input Connections

Two (2) data input connections to the converter unit

are available. Only one can be used at a time, and the choice varies depending upon the specific application. Although var- ious connection options are possible, typical applications are described in the sections that follow. Use whichever application is most suitable to your configuration. Typical configuration diagrams are included in this manual for reference.

5.6 Remote RS-232 Device Interface

In this application, Allegiant biphase control code is being converted into RS-232 which is then transmitted over an RS-232 communication link (fiber optics, microwave, dial-up phone modems, etc.). At the camera side end of the RS-232 transmission link, the RS-232 data is converted back into Allegiant biphase protocol via the LTC 8786 unit. The biphase data is then connected to AutoDome cameras or Allegiant receiver/driver units.

The RS-232 communication link must be able to support an RS-232 simplex transmission rate of 9600 baud.

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