Ami 10-Output Module Switch S1 Name And Functions - Symmetricom TSG-3800 Series User Manual

Setting Rocker Switch S1
Before installing the AMI 10-Output module in the TSG, you must set Rocker Switch
S1 appropriately. The configuration of these switches must be done carefully, taking
into account the type of outputs required.
Note: In most applications, AMI 10-Output modules are used in pairs.
If this is true in your application, be sure that the rocker switches are
set identically on both modules.
The rocker switches that are part of S1 have the names and functions shown in
Table 7-3. A switch is OFF when the left side of the rocker is pressed down. A switch
is ON when the right side of the rocker is pressed down.
Table 7-8. AMI 10-Output Module Switch S1 Name and Functions
Rocker
LEN2, Set according to the length of cable connected to the outputs (for T1 applications).
LEN1, LEN0 See Table
TCLKSEL Sets the frequency expected by the output buffers. ON = 1.544 MHz, T1
applications, OFF = 2.048 MHz, E1 applications
INSEL Selects the inputs to be used. ON = IN1 (A and B), OFF = IN2 (A and B).
CLKSEL Selects the clocks to be used. ON = CLK1 (A and B), OFF = CLK2 (A and B).
Note: The LEN0, LEN1 and LEN2 switches control the T1 output
wave shape when TCLKSEL is ON. Refer to
The INSEL switch is used to select either IN1 or IN2 signals. The Frame Generators
produce timing signals for either T1 or E1 at the IN1 inputs of the AMI 10-Output
module, and either E1 or CC at the IN2 inputs. Set INSEL in combination with the
FG settings for the desired output signal.
The CLKSEL switch selects either CLK1 or CLK2 inputs from the Frame Generator.
Set this switch to On if the clocks on the CLK1 inputs are the proper frequency; set
this switch to Off if the clocks on the CLK2 inputs are the proper frequency. For a T1
output, a 1.544 MHz clock must be selected, or for an E1 output, a 2.048 MHz clock
must be selected.
Finally, the output drivers must be configured for the length of cable being used.
This is accomplished by setting the LEN0, LEN1 and LEN2 rocker switches in S1.
Table 7-9 shows the possible switch settings, the option selected and the
applications. If the module is generating E1 signals, these switches do not affect the
outputs and can be set to any value except all On. A safe setting for these three
switches is all Off when E1 signals are being generated.
12778474-002-2 Revision F – March 2004
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7-9. For E1 applications, set these three switches to OFF.
Function
Table 7-9.
TSG-3800 User's Guide 219
Output Modules
AMI 10-Output Module