32-Bit Counter/Timers
32-Bit Counter/Timers
High-Stability, Oven-Controlled Oscillator
The NI PXI-6608 module includes a high-stability 10 MHz
oven-controlled crystal oscillator (OCXO) for high-precision
applications. When the PXI-6608 is installed in the star trigger slot
of a PXI chassis (Slot 2), you can drive the OCXO signal to the PXI
backplane for high-stability timing of your entire measurement
system. The PXI-6602 and PXI-6608 feature phase-lock loop (PLL)
circuitry so that the devices can synchronize their reference clocks
to the backplane.
Synchronizing Networked Measurements with GPS
You can correlate measurements performed in a wide area using the
Global Positioning System (GPS). With the PXI-6608, you can
correlate data from several PXI chassis, determine the time when a
hardware event occurs, or generate a pulse at a user-specified time.
I/O Connector
The NI 660x devices each have a 68-pin shielded, latching connector,
with a SOURCE, GATE, UP/DOWN, and OUT signal for each of the
counter/timers. PFI<8..31> can be used as general-purpose DIO
lines when not used as counter/timer I/O signals. The DIOn lines are
the eight dedicated DIO lines. The PCI-6601 devices have the same
I/O interface, except that only counters 0-3 are present.
Debouncing and Glitch Removal
Each input on the NI 660x devices can be passed through a digital
debouncing filter to eliminate glitches on the input signal. You can
use defined filter settings to remove noise/glitches narrower than 2.5 µs,
500 ns, 250 ns, and 50 ns from your input signal, or you can use one
of the counters to create custom filter settings.
Driver Software
With NI-DAQ driver software, you can configure your devices
interactively, write custom programs, and perform counter/timer
I/O easily. NI-DAQ provides the counter/timer functions natively,
so you can programmatically select whether you want to measure
position with a quadrature encoder, measure a frequency, output
a pulse train, or perform one of the other provided counter/timer
functions. NI-DAQ also includes numerous example programs
for LabVIEW and other ADEs to quickly get you started with
your application.
Buffered Measurements
NI 660x devices use the National Instruments MITE bus interface
controller to implement bus-master DMA transfers. As a result,
you can perform high-speed, continuous operations such as
buffered position encoder measurement and buffered period
measurement. You can perform one high-speed DMA-based
transfer on the NI 6601 devices and up to three simultaneous
DMA transfers on the NI 6602 and NI 6608 devices. You can use
interrupts for additional simultaneous buffered transfers.
Data Acquisition and
Signal Conditioning
Ordering Information
Digital I/O
The NI-TIO ASIC also provides
up to 32 DIO lines on the
NI 660x devices. Eight lines are
dedicated to DIO, while the
others can be used for DIO when
not used by the counter/timers.
DIO lines are individually
software configurable for input
or output.
PFI31/SOURCE2
GND
PFI28/OUT2
PFI27/SOURCE3
GND
PFI24/OUT3
PFI23/SOURCE4
GND
PFI20/OUT4
PFI19/SOURCE5
GND
PFI16/OUT5
PFI15/SOURCE6
PFI14/GATE6
GND
Reserved
GND
PFI9/UP_DOWN7
PFI8/OUT7
PFI7/DIO7
GND
PFI4/DIO4
PFI3/DIO3
GND
PFI0/DIO0
PFI32/OUT1
PFI34/GATE1
PFI35/SOURCE1
PFI33/UP_DOWN1
PFI36/OUT0
Reserved
PFI38/GATE0
PFI39/SOURCE0
+5V
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
GND
PFI30/GATE2
PFI29/UP_DOWN2
GND
PFI26/GATE3
PFI25/UP_DOWN3
GND
PFI22/GATE4
PFI21/UP_DOWN4
GND
PFI18/GATE5
PFI17UP_DOWN5
Reserved
GND
PFI13/UP_DOWN6
PFI12/OUT6
PFI11/SOURCE7
PFI10/GATE7
GND
GND
PFI6/DIO6
PFI5/DIO5
GND
PFI2/DIO2
PFI1/DIO1
Reserved
GND
GND
PFI37/UP_DOWN0
GND
Reserved
Reserved
GND
Reserved
NI PCI-6601 ..................................................................777918-01
NI PCI-6602 ..................................................................777531-01
NI PXI-6602 ..................................................................777557-01
NI PXI-6608 ..................................................................777937-01
Includes NI-DAQ driver software and calibration certificate.
For information on extended warranty and value-added
services, see page 20.
Recommended Configurations
Family
NI 6601
NI 6602
NI 6608
DAQ Device
PCI-6601
PCI-6602
PXI-6602
PXI-6608
Accessory
CB-68LP (777145-01)
BNC-2121 (778289-01)
TB-2715 (778242-01)
TB-2715 (778242-01)
Cable
SH68-68-D1 (183432-01)
SH68-68-D1 (183432-01)
None required
None required
RTSI Bus and
PXI Trigger Bus
NI 660x devices are equipped
with the RTSI bus or PXI
trigger bus for multidevice
synchronization. Timing signals
on an NI 660x device can
be routed to or from other
devices in your system to
perform advanced timing and
synchronization.
See page 390 for accessory and cable information.
BUY ONLINE!
Visit
ni.com/info
and enter pci6601, pci6602, pxi6602,
and/or pxi6608.
Figure 1. NI 660x I/O Connector
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
389
NI [ NATIONAL INSTRUMENTS CORPORATION ]
