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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
UR14 Driver/Receiver Board I-5
Clock is assigned to the LVTTL AUX A 5 then subsequently changing that
that pin to ECL it would require assigning the External Clock to AUX A 9 as
well.
Signal Descriptions (Figure I-3)
AUX DATA3A
Auxiliary Data output from the Data Sequencer to the
LVTTL output buffer
AUX EN3A
Auxiliary Enable output from the Data Sequencer to the
LVTTL output buffer.
AUX RH3A
Auxiliary Response Input to the Data Sequencer from the
LVTTL input buffer.
AUX H[9:12]A
Auxiliary Response Inputs to the Data Sequencer from the
ECL input buffers.
AUX DATA[9:12]A Auxiliary Data outputs from the Data Sequencer to the
positive side ECL output buffers.
AUX EN[9:12]A
Auxiliary Data outputs from the Data Sequencer to the
negative side ECL output buffers.
AUX DATA[5:8]A Auxiliary Data outputs from the Data Sequencer to the
LVTTL output buffers
AUX EN[5:8]A
Auxiliary Enable outputs from the Data Sequencer to the
LVTTL output buffer.
AUX RH[5:8]A
Auxiliary Response Input to the Data Sequencer from the
LVTTL input buffers.
I/O CONTROL
Control Logic signals to control isolation, termination and
configuration relays
AUX3 A
Front Panel AUX I/O 3A.
AUX[9:12]- A
Front Panel I/O for the minus side of the ECL buffers for
AUX I/O 9A through 12A.
AUX[9:12]+ A
Front Panel I/O for the positive side of the ECL buffers for
AUX I/O 9A through 12A. These I/O pins are connected to
AUX[5:8]A. (5 to 9, 6 to 10, 7 to 11, 8 to 12)
AUX[5:8] A
Front Panel I/O for the LVTTL buffers for AUX I/O 5A
through 8A. These I/O pins are connected to
AUX[9:12]A+. (5 to 9, 6 to 10, 7 to 11, 8 to 12)