National Instruments PCI-4451, PCI-4452 - page 34

Chapter 4 Signal Connections
PCI-4451/4452 User Manual 4-4
© National Instruments Corporation
Table 4-2. Analog I/O Signal Summary
Signal Name
Signal
Type and
Direction
Impedance
Input/
Output
Protection
(Volts)
On/Off Source
(mA at V)
Sink
(mA at
V)
Rise
Time
(ns) Bias
+ACH<0..3> AI 1 MΩ
in parallel
with
50 pF to
AIGND
±42.4V/±42.4 V†— — — ±100 pA
−ACH<0..3> AI 1 MΩ
in parallel
with
50 pF to
AIGND
±42.4V/±42.4 V†— — — ±100 pA
AIGND AI — — — — — —
+DAC0OUT AO 22 Ω to
−DAC0OUT,
4.55 kΩ to
AOGND
Short-circuit to
−DAC0OUT,
ground
16.7 mA at
10 V — — —
−DAC0OUT AO 22 Ω to
+DAC0OUT,
4.55 kΩ to
AOGND
Short-circuit to
+DAC0OUT,
ground
16.7 mA at
10 V — — —
+DAC1OUT AO 22 Ω to
−DAC1OUT,
4.55 kΩ to
AOGND
Short-circuit to
−DAC1OUT,
ground
16.7 mA at
10 V — — —
−DAC1OUT AO 22 Ω to
+DAC1OUT,
4.55 kΩ to
AOGND
Short-circuit to
+DAC1OUT,
ground
16.7 mA at
10 V — — —
AOGND AO — — — — — —
DGND DIO — — — — — —
+5 V DO 0.7 ΩShort-circuit to
ground 0.5A — — —
AI = Analog Input DIO = Digital Input/Output
AO = Analog Output DO = Digital Output
† ±400 V/±400 V guaranteed by design, but not tested or certified to operate beyond ±42.4 V
User.book Page 4 Tuesday, April 14, 1998 10:20 AM