Chapter 4
Connecting Signals
4-6
ni.com
GPCTR0_OUT
DGND
Output
Counter 0 Output—This output is from the
general-purpose counter 0 output.
FREQ_OUT
DGND
Output
Frequency Output—This output is from the frequency
generator output.
Table 4-3.
I/O Signal Summary for the NI PCI-6110/6111
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 M
Ω
in parallel
with
100 pF
1
1 M
Ω
in parallel
with
10 pF
2
42 V
—
—
—
—
ACH<0..3>–
AI
10 nF
42 V
—
—
—
±200 pA
ACH<0..3>GND
AI
—
—
—
—
—
—
DAC0OUT
AO
50
Ω
Short-circuit
to ground
5 at 10
5 at –10
300
V/
µ
s
—
DAC1OUT
AO
50
Ω
Short-circuit
to ground
5 at 10
5 at –10
300
V/
µ
s
—
AOGND
AO
—
—
—
—
—
—
DGND
DO
—
—
—
—
—
—
VCC
DO
0.1
Ω
Short-circuit
to ground
1 A
—
—
—
DIO<0..7>
DIO
—
Vcc +0.5
13 at (Vcc –0.4)
24 at0.4
1.1
50 k
Ω
pu
SCANCLK
DO
—
—
3.5 at (Vcc –0.4)
5 at 0.4
1.5
50 k
Ω
pu
EXTSTROBE*
DO
—
—
3.5 at (Vcc –0.4)
5 at 0.4
1.5
50 k
Ω
pu
PFI0/TRIG1
AI/DIO
10 k
Ω
±35 Vcc +0.5
3.5 at (Vcc –0.4)
5 at 0.4
1.5
9 k
Ω
pu
and
10 k
Ω
pd
PFI1/TRIG2
DIO
—
Vcc +0.5
3.5 at (Vcc –0.4)
5 at 0.4
1.5
50 k
Ω
pu
PFI2/CONVERT*
DIO
—
Vcc +0.5
3.5 at (Vcc –0.4)
5 at 0.4
1.5
50 k
Ω
pu
Table 4-2.
Signal Descriptions for I/O Connector Pins (Continued)
Signal Name
Reference
Direction
Description