ADQ112 Sp Devices, Inc., ADQ112 Datasheet - Page 5

• Manufacturer Part Number: ADQ112
• Description: High Speed Digitizer
• Manufacturer: Sp Devices, Inc.

Specifications of ADQ112

• Transmission Media Type: Cable
• Power Supply Type: Analog
• Typical Operating Supply Voltage: 12 V

•
When armed, the system is waiting for the
selected trigger event. At the trigger event, a data
batch of selected length is recorded in the batch
memory. A pre-trigger buffer is available. The
length of the pre-trigger buffer is fully controlla-
ble
batch length.
The trigger hold-off is up to 2
in steps of 4 samples.
4.8.2
Data capture is triggered by a software command.
This is suitable for measurements on continuous
waves.
4.8.3
Data capture is triggered by an event on the input
data. This is useful for capturing pulses. The level
trigger combined with the pre-trigger or trigger
hold-off setting can capture any pulse shape.
4.8.4
Data capture is triggered by positive edge on the
trigger input connector. This is intended for syn-
chronizing the signal source with the ADQ112. It
can also be used for synchronizing several
ADQ112.
4.8.5
The ADQ112 can be set up in a multi record
mode. At each trigger, a record of data is recorded
in the memory. The length of each record and
number of records is user defined. Multi record
works together with pre-trigger buffer and trigger
hold off.
Figure 5
trigger is used for triggering each record. The ana-
log channel samples a low frequency sine wave.
The records has been reconstructed in time
domain to illustrate the slow sine wave.
The pulse repeat frequency (PRF) can be set up
to 1.8 MHz depending on the record length.
1. There is a fixed amount of delay between the trigger
Document Number
08-0132
Revision
C
1
and data depending on the length of the wires and
the internal signal paths. This delay will change for a
custom application using the ADQ Development Kit
. The pre-trigger buffer is a part of the total
External trigger
Software trigger
Level trigger
External trigger
Multi record
shows an example, where an external
Date
2009-12-21
Printed
2009-12-22
34
samples and is set
Contact
Signal Processing Devices Sweden AB
Teknikringen 6, SE-583 33 Linköping, SWEDEN
www.spdevices.com
Figure 5: Multi Record
4.9
The ADQ112 is equipped with one bi-directional
GPIO, two dedicated inputs and 2 dedicated out-
puts. The GPIOs are controlled from software, but
can also be accessed from the ADQ Development
Kit.
The connector is Micro D plug 9 way. A suitable
socket with lead is for example MOLEX 83421-
9044.
The trigger port can also be used as a bi-direc-
tional GPIO. The trigger can be configured as a
trigger output, see
PRF
Record length
PULSE REPEAT FREQUENCY MULTI TRIG MODE
Record length
16
64
256
1024
4096
16384
65536
-1000
-1500
-2000
2000
1500
1000
-500
500
0
GPIO
1000
Multi record, external trigger
2000
Figure
Sampel index
Maximum PRF kHz
1800
1700
1200
690
235
65
16.6
3000
7.
690
1024
Channel A
Reference sine wave
4000
ADQ112
Datasheet
5000
kHz
samples
5(7)