Internal Jumpers - Patton electronics 1205 User Manual

S1 through S3: Data Rate Setting
Switches S1 through S3 are set in combination to determine the
synchronous data rate for the Model 1205. Switch S4 is not active.
S1 S2
Off Off
On Off
Off On
On On
Off Off
On Off
Off On
On On

3.3 INTERNAL JUMPERS

The Model 1205 has three pairs of jumpers (JP1, JP2 and JP3)
mounted on the internal PC board. See Figure 3, below. These
jumpers set clocking, carrier, and RTS/CTS delay independently for
ports A and B.
Figure 3. Model 1205 Jumper Orientation and Factory Default on Internal PC Board.
Figure 4 (following page) presents a detailed view of JP1, JP2 and
JP3, and also shows the factory default setting for each jumper. Please
observe that each pair contains one strap to configure Port A and one
strap to configure Port B. Observe also that each strap has three
possible positions: covering posts 1 & 2, covering posts 2 & 3, or
removed altogether. The detailed description for each pair of jumpers
presents all valid strap position options.
S3 S4
Off N/A
Off N/A
Off N/A
Off N/A
On N/A
On N/A
On N/A
On N/A
JP3 JP1 JP2
PORT B
5
Setting
32 kbps (factory default)
48 kbps
56 kbps
64 kbps
72 kbps
112 kbps
128 kbps
144 kbps
PORT B
PORT A