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Model T940 User Manual
Publication No. 980938 Rev. K
DR9 Driver/Receiver Board H-18
Astronics Test Systems
J9 Connectors
The J9 connectors are used for calibration and for access to the auxiliary and
probe signals.
Figure H-7: DR9 J9 Calibration and Auxiliary Connectors
Table H-13: J9A Pinout
Name
Pin
No.
Description
AUX5 A
1
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
AUX6 A
3
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
AUX7 A
5
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
AUX8 A
7
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
PROBE MODE A
9
(Output) Probe Support Output
BCLK A
11
(Output) Serial Clock
PBUT A
13
(Bi-directional) Probe Button Input
MPSIG A
15
(Output) Multi-purpose Signal
MONITOR A
17
(Output) Monitor signal from the Pin Electronics devices
Note: Only one channel can be selected at a time.
EXTFORCE A
19
(Input) External Force routed to all of the Pin Electronics devices;
used to calibrate the instrument to an external standard.
GND
2-20
(Even)
Ground
Table H-14: J9B Pinout
Name
Pin
No.
Description
AUX5 B
1
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
AUX6 B
3
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
AUX7 B
5
(Bi-directional) General Purpose LVTTL I/O pin, 50 Ohm series
Pin 20
Pin 1