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Publication No. 980938 Rev. K
Model T940 User Manual
Astronics Test Systems
DR3e Driver/Receiver Board D-13
DRA I/O Channels (J200)
Table D-6: DR3e, DRA I/O Channels (J200)
Name
Pin No.
Description
CH1-CH32
Various
(Bi-directional) High speed channels
DUT_GND A
100
(Input) DUT/UUT ground reference. All of the Pin Electronics
devices have a UUT ground reference input that can be
selected to be this signal or signal ground.
SIG_GND
Various
Signal Ground reference
AUX1 A
34
(Bi-directional) General Purpose Programmable I/O pin. Also
used as the probe input data channel.
AUX2 A
36
(Bi-directional) General Purpose Programmable I/O pin
AUX3 A
38
(Bi-directional) General Purpose Programmable I/O pin
AUX4 A
40
(Bi-directional) General Purpose Programmable I/O pin
AUX5 A
42
(Bi-directional) General Purpose LVTTL I/O pin, 51.1 Ohm
series
AUX6 A
44
(Bi-directional) General Purpose LVTTL I/O pin, 51.1 Ohm
series
AUX7 A
84
(Bi-directional) General Purpose LVTTL I/O pin, 51.1 Ohm
series
AUX8 A
86
(Bi-directional) General Purpose LVTTL I/O pin, 51.1 Ohm
series
AUX9+ A
88
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX9- A
89
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX10+ A
90
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX10- A
91
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX11+ A
92
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX11- A
93
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX12+ A
94
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
AUX12- A
95
(Bi-directional) General Purpose ECL I/O pin, 51.1 Ohm to -2 V
PBUT A
46
(Bi-directional) Probe Button Input
PMODE A
47
(Output) Probe Support Output
GNDREF A
49
(Output) Ground Reference output from the Pin Electronics
devices
MONITOR A
50
(Output) Monitor signal from the Pin Electronics devices
Note: Only one channel can be selected at a time.
BCLK-A
96
(Output) Reserved
EXTFORCEA
98
(Input) External Force routed to all of the Pin Electronics
devices