Patton electronic 1008 user manual Features, Description, Accessing the DIP Switches

2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product. This product has been thoroughly inspected and tested and is warranted for One Year parts and labor. If any questions or problems arise during installation or use of this product, please do not hesitate to contact Patton Electronics Technical Support at (301) 975-1007.

2.1 FEATURES

•Operates asynchronously, point to point or multipoint, over 2 or 4 wires

•Up to 50 multipoint device drops in a polling environment

•Data rates to 115.2 Kbps

•Passes transmit & receive data, one control signal each direction

•No AC power or batteries are required

•Variable high/low impedance settings

•Able to operate with or without “echo”

•Carrier can be set as “constantly on” or “controlled by RTS”

•Ultra-miniature size (2.50" x 1.20" x 0.75")

•Twisted pair connection via strain relief, RJ-11 or RJ-45

•Silicon Avalanche Diode surge protection

2.2 DESCRIPTION

The Model 1008 High Speed, Multipoint, DB-9 Short Range Modem provides exceptional versatility in an ultra-miniature package. Requiring no AC power or batteries for operation, the Model 1008 supports asynchronous EIA/TIA-574 data rates to 115.2 Kbps over one or two unconditioned twisted pair. Distances up to 15.0 miles are attainable at lower data rates (1.2 Kbps, 19 AWG twisted pair).

The Model 1008 can handle up to 50 terminal drops in a multipoint polling environment. For RS-485 and serial printer applications requiring hardware handshaking, the Model 1008 passes one control signal in each direction. The Model 1008 may be configured for high or low impedance, carrier may be set to “constantly on” or “controlled by RTS”, and the unit can operate with or without “echo”. RTS/CTS delay may be set for “no delay” or 8 mS.

Options for twisted pair connection include terminal blocks with strain relief, RJ-11, RJ-45 and dual modular connectors for daisy chaining. Silicon Avalanche Diodes provide 600 watts per wire of protection against harmful data line transient surges.

3.0 CONFIGURATION

The Model 1008 is configured using two PC board mounted 4-position DIP switches. This section shows how to access the DIP switches, provides an overview of the factory default settings, and describes all possible configuration options. For instructions on how to configure the Model 1008 for specific applications, refer to Section 5.0.

3.1 ACCESSING THE DIP SWITCHES

The Model 1008 has main PC board and a daughter board. DIP switch S1 is located on the underside of the main PC board (see Figure 1, below). DIP switch S2 is located on the top of the daughter board (see Figure 2, below).

Switch S1

ON

	4
	3
ON	2
	1

Figure 1. Underside of Model 1008 main PC board, showing the location of DIP switch S1.

Switch S2

1	ON
2
3
4

ON

Figure 2. Top of Model 1008 daughter board, showing the location of DIP switch S2.

3 4