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Model T940 User Manual
Publication No. 980938 Rev. K
UR14 Driver/Receiver Board I-26
Astronics Test Systems
Auxiliary I/O Channels
Table I-9: Auxiliary I/O Channel Characteristics
Description
Characteristics
General
50 MHz data rate I/O
Per channel relay isolation
AUX[1:2] A
AUX[1:2] dedicated to the Probe when used
Programmable
AUX3 A
LVTTL
50 Ω series terminated
AUX4 A
LVTTL dedicated to the Probe when used
AUX[5|9] A
AUX[6|10] A
AUX[7|11] A
AUX[8|12] A
LVTTL or ECL
These channels share a pin on the connector.
They are a programmable selection of one of three
types; LVTTL, SE ECL or Differential ECL
LVTTL selection is series 50
Ω terminated
ECL is parallel terminated 50
Ω to -2 V
AUX[9:12]- A
Negative side of differential ECL AUX[9|12]A used
when these channels are configured as differential
ECL
Parallel terminated 50
Ω to -2 V
Bi directional General purpose I/O
50 MHz data rate I/O
Per channel relay isolation
AUX[1:4] B
Programmable
AUX[5:8] B
LVTTL or ECL
These channels are a programmable selection of
either LVTTL or SE ECL
LVTTL selection is series 50
Ω terminated
ECL is parallel terminated 50
Ω to -2 V
AUX[9:11]+ B
AUX[9:11]- B
SE ECL or Differential ECL
Parallel terminated 50
Ω to -2V
Power Requirements
Table I-10: Power Requirements (not including Power Converter power consumption)
Voltage
Peak Current
Dynamic Current
+5 V
3680 mA
330 mA
-5.2 V
800 mA
25 mA
-2 V
694 mA
10 mA
+12 V
710 mA
42 mA
-12 V
80 mA
20 mA
+24 V
3270 mA
300 mA
-24 V
2980 mA
290 mA