Option 1 allows you to directly power the adapter test board with 10 Vdc to 32 Vdc supplied to E1 and
E2 connected to supply ground. TB1 is installed and TB2 and TB3 are open. In the adapter board, this
voltage travels through a DC-to-DC converter and a voltage regulator to supply the SA.22c with 15 Vdc
and 5 Vdc for operation. For this option, J7 is used for serial interface communications, J3, J5, and J6 are
used for signal outputs, and J4 is used for 1PPS input. TP1 and TP3 are used for lock and service monitor
respectively. TP2 is used for providing the analog frequency control if needed. In this option, J2 must not
be connected to avoid degraded signal integrity.
Option 2 allows you to directly power the adapter test board with separate 15 Vdc supplied to E5 and
5 Vdc supplied to E3 supplies with E4 connected to supply ground. TB2 and TB3 are installed and TB1 is
left open. In the adapter board, these voltages travel directly to the SA.22c for operation (the 5 Vdc
must be applied before or simultaneous to the 15 Vdc). For this option, J7 is used for serial interface
communications, J3, J5, and J6 are used for signal outputs, and J4 is used for 1PPS input. TP1 and TP3
are used for lock and service monitor respectively and TP2 is used for providing the analog frequency
control if needed. In this option, J2 must not be connected to avoid degraded signal integrity.
Option 3 allows you to power the adapter test board with 10 Vdc to 32 Vdc through the 26-pin Molex
connector (J2). TB1 is installed and TB2 and TB3 are open. In the adapter board, this voltage travels
through a DC-to-DC converter and a voltage regulator to supply the SA.22c with 15 Vdc and 5 Vdc for
operation. For this option, J7 or J2 is used for serial interface communications, J2 is also used for input
and output signals. TP1 and TP3 are used for lock and service monitor respectively and TP2 is used for
providing the analog frequency control if needed; however, J2 can also provide these monitors and
frequency control as well (see for Molex pin configuration). 26-Pin Molex Connector (J2) (see page 18)
In this option, J3, J4, J5, and J6 must not be connected to avoid degraded signal integrity.
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