Patton electronics 2070 Series User Manual page 9

MODEL 2070/Dx SWITCH S1 SUMMARY TABLE
Position Function
S1-1 Test Mode
S1-2 Clock Mode
S1-3 Byte Timing
S1-4 Reserved
Switches S1-1: Test Mode Activation
Use Switch S1-1 to enable or disable the Model 2070/Dx Test
Mode. When enabled, the Local Line and G.703 loopback tests are
activated simultaneously. When disabled, the Model 2070/Dx functions
normally.
S1-1 Activation
On Enabled
Off Disabled
Switch S1-2 : Clocking Mode
Use Switch S1-2 to set the system clock for the Model 2070/Dx.
When using two Model 2070s together in a point-to-point application as
short range modems, set one unit for Internal clock and the other unit
to Network clock. When connecting directly to the G.703 network, set
the unit to Network clock.
S1-2 Clocking
On Network
Off Internal
Factory Default
Off Disabled
On Network
On Enabled
Off
Description
Local Loop and G.703 Loop
diagnostics enabled
Local Loop and G.703 Loop
diagnostics disabled
Description
The G.703 network
provides the system clock
The Model 2070/Dx provides
an internally generated
system clock
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Switch S1-3: Byte Timing
Use Switch S1-3 to enable byte timing on the Model 2040/Dx. The
Byte timing clock is an 8 KHz (1 byte/sync. pulse) framing clock
synchronized to the G.703 Data.
S1-3 Activation
On Enabled
Off Disabled
Switch S1-4: Reserved for Factory Use
Switch S1-4 is reserved for factory use and must remain in the
Off position.
S1-4 Activation
On Not a Valid Setting
Off Normal Operation
3.4.2 Jumper Strap "JP1" and "JP2"
The Model 2070/Dx uses two jumper straps (JP1 and JP2, see
Figure 13 below) to select the power source option and to connect the
unit signal ground to frame ground.
Jumpers JP1 & JP2
Figure 13. Location of Strap JP1 and JP2 on the top of the Model 2070/Dx PC board
.
Figure 14 (following page) shows possible settings of jumper straps
JP1 and JP2. JP1 may be positioned on pegs 1 and 2 or on pegs 1
and 3; JP2 may be positioned on pegs 4 and 6 or on pegs 5 and 6. A
detailed description of each jumper strap follows Figure 14.
Description
Model 2070/Dx outputs Byte Timing
Byte timing is disabled
1 2
4
3
5 6
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