Patton electronic Model 1065 user manual Configuration Switch SET S3, S3 Summary Table

3.4 CONFIGURATION SWITCH SET “S3”

The DIP switches on S3 set the anti-stream control, local loopback enable, remote loopback enable and receive (input) impedance levels for the Model 1065. Factory default positions of Switch S3 are shown in the table below.

S3 SUMMARY TABLE

Position	Function	Factory Default
S3-1	Input Impedance	On	} 200 Ohms
S3-2	Input Impedance	Off
S3-3	Timing Mode	Off
S3-4	Topology	On Point to Point
S3-5	Local Loopback	Off	Disabled
S3-6	Remote Loopback	Off	Disabled
S3-7	Anti-stream Control	Off	} Disabled
S3-8	Anti-stream Control	Off

Switches S3-1 & S3-2: Input Impedance

The setting for Switches S3-1 and S3-2 determines the 1065 Series’ input impedance. This allows you to choose the optimum impedance setting for your application. In long distance applications the impedance of the cable must match the impedance of the load (or resistor) of the Model 1065 Series unit. Thicker gauge cables requires a lower Ohm setting, while a thinner gauge cable should receive a higher Ohm setting. If you are using higher speeds you will need a lower Ohm setting, and a higher Ohm setting for the slower speeds. Refer to the table on the following page for assistance in selecting a setting.

S3-1	S3-2	Setting
On	On	130 Ohms
On	Off	200 Ohms
Off	On	320 Ohms
Off	Off	High impedance (minimum 2k ohms)

S3-1, S3-2 SELECTION TABLE FOR MODEL 1065

Gauge of					Data Rates, kb/s
Cable	1.2	1.8	2.4	3.6	4.8	7.2	9.6	14.4	19.2	28.8	38.4	57.6
19AWG/.9mm	320	320	200	200	200	200	200	130	130	130	130	High
22AWG/.6mm	320	320	320	200	200	200	200	200	130	130	130	High
24AWG/.5mm	320	320	320	320	200	200	200	200	200	130	130	High
26AWG/.4mm	320	320	320	320	320	200	200	200	200	200	130	High

S3-1, S3-2 SELECTION TABLE FOR MODEL 1065 (CONTINUED)

Gauge of	Data Rates, kb/s
Cable	16	32	64
19AWG/.9mm	130	130	High
22AWG/.6mm	200	130	High
24AWG/.5mm	200	130	High
26AWG/.4mm	200	200	High

Switch S3-3: Rate Selection

Use Switch S3-3 to select the timing mode of the 1065. To oper- ate the 1065 at 16, 32, or 64kbps, set S3-3 to the On position. To select any other DTE rate, set Switch S3-3 Off.

S3-3	Setting
On	16, 32, or 64kbps
Off	1.2 - 57kbps, excluding 16 kbps and 32kbps

Switch S3-4: Topology

Use switch S3-4 to select the topology of the Model 1065.

S3-4	Setting
On	Point to point
On	Master multi-point
Off	Slave multi-point

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