Switch S3-4: Mode Selection; Switch S3-5: Rs-232 Initiation Of Local Loopback Test - Patton electronics 1080A User Manual

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 Table 5 for assistance
in selecting a setting.
S3-1
On
On
Off
Off
Table 5: S3-1, S3-2 Selection Table for Model 1080A
Gauge of
1.2
Cable
320
19AWG/.9mm
320
22AWG/.6mm
320
24AWG/.5mm
320
26AWG/.4mm

Switch S3-4: Mode Selection

The setting for switch S3-4 allows the user to choose the appropriate set-
ting for point-to-point or multipoint applications.
S3-4

Switch S3-5: RS-232 Initiation of Local Loopback Test

The setting for switch S3-5 determines whether or not the Model 1080A
Series' local analog loopback test can be initiated by raising pin 18 on
the RS-232 interface.
S3-2
On 130 ohms
Off 200 ohms
On 320 ohms
Off High impedance (minimum 2k¾)
1.8 2.4 3.6
320 200 200
320 320 200
320 320 320
320 320 320
On Point-to-point
On Multipoint application as "Master"
Off Multipoint application as "Slave"
S3-5
On RS-232 initiation enabled
Off RS-232 initiation disabled
Setting
Data Rates, kb/s
4.8 7.2 9.6 14.4
200 200 200 130
200 200 200 200
200 200 200 200
320 200 200 200
Setting
Setting
13
19.2 28.8 38.4 57.6
130 130 130 130
130 130 130 130
200 130 130 130
200 200 130 130