Patton electronic Model 1065 - Manual (Page 6)

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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.
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)
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
S3 SUMMARY TABLE
Position Function Factory Default
S3-1 Input Impedance On
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
S3-8 Anti-stream Control Off
200 Ohms
Disabled
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S3-1, S3-2 SELECTION TABLE FOR MODEL 1065
Gauge of
Cable
19AWG/.9mm
22AWG/.6mm
24AWG/.5mm
26AWG/.4mm
1.2
320
320
320
320
Data Rates, kb/s
1.8
320
320
320
320
2.4
200
320
320
320
3.6
200
200
320
320
4.8
200
200
200
320
7.2
200
200
200
200
9.6
200
200
200
200
14.4
130
200
200
200
19.2
130
130
200
200
28.8
130
130
130
200
38.4
130
130
130
130
57.6
High
High
High
High
S3-1, S3-2 SELECTION TABLE FOR MODEL 1065 (CONTINUED)
Gauge of
Cable
19AWG/.9mm
22AWG/.6mm
24AWG/.5mm
26AWG/.4mm
16
130
200
200
200
Data Rates, kb/s
32
130
130
130
200
64
High
High
High
High