ASTi AI-Delta Manual

Advanced Simulation Technology inc.
500A Huntmar Park Drive
Herndon, Virginia 20170 USA
Tel. [phone] • Fax. [phone]
www.asti-usa.com
Advanced Simulation Technology inc.
500A Huntmar Park Drive, Herndon, Virginia 20170 USA
Revision A, Version 0 (December, 2017)
AI-Delta Technical User Guide
Document: DOC-HW-DEL-UG-A-0

Product Name: AI-Delta
AI-Delta Technical User Guide
© Copyright ASTi 2017
Restricted Rights: Use, duplication, or disclosure by the Government is subject to restrictions as
set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software
clause at DFARS 252.227-7013.
This material may be reproduced by or for the U.S. Government pursuant to the copyright
license under the clause at DFARS 252.227-7013 (1994).
ASTi
500A Huntmar Park Drive
Herndon, Virginia 20170 USA

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Revision history
Date Revision Version Comments
12/8/2017 A 0 Initial baseline version.

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Contents
1.0 AI-Delta 1
2.0 Specifications 3
3.0 Audio input and output 5
3.1 Audio interface pinout 6
4.0 Control inputs and digital outputs 7
4.1 Control inputs 7
4.1.1 Control input as digital input 7
4.1.2 Control input as analog input 8
4.2 Digital output 8
5.0 Memory devices 10
6.0 Typical headset settings 11
7.0 Warranty information 12
7.1 Repairs and returns 12

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1.0 AI-Delta
The ASTi Interface – Delta (AI-Delta) is a compact audio and I/O distribution device that con-
nects local or remote operator headsets, speakers, control panels, and other peripherals to the net-
work via Ethernet. The ASTi server routes audio, control, and I/O data to and from each AI-
Delta over a local area network (LAN) or wide area network (WAN). Depending on the user's
or program's needs, the AI-Delta can connect to a variety of endpoints:
lLive radios
lPress-to-talk (PTT) devices and headsets
lMicrophones
lPowered speakers
The following figure shows an example of an AI-Delta network configuration:
Figure 1: AI-Delta hardware diagram
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The AI-Delta includes the following features:
lStereo support: supports stereo operation (i.e., independent left and right output) on a
single connector, reducing cabling complexity
lReduced footprint: takes up little space and fits easily on a desktop
lSoftware-configurable: includes adjustable preamplifier gains and sidetone for easy, direct
connection to a variety of audio or communications systems and peripherals
lRoutable: supports IPv4 and IPv6 LAN and WAN topologies
lIntegrated I/O: includes configurable digital and analog I/O for direct connection of PTT
units, volume controls, switch detection, radio PTT activation, and other control applic-
ations
lDual USB ports: provides ability to connect USB peripherals based on need (e.g., USB
headset and foot switch)
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2.0 Specifications
The AI-Delta has the following general specifications:
Compatible With Voisus
Weight A packaged AI-Delta weighs 14 oz.
Power Source Ethernet port via Power over Ethernet (PoE) IEEE 802.3af
Power Consumption <12.5 w @ 56 VDC
Mean Time Between Failure (MTBF) 32,552.67 hours (COTS)
27,150.44 hours (MIL)
Table 1: AI-Delta specifications
On the front panel, the AI-Delta has two DB-15 connectors:
Figure 2: AI-Delta front panel
On the rear panel, the AI-Delta has two USB ports and a Power over Ethernet (PoE) port:
Figure 3: AI-Delta rear panel
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The AI-Delta's dimensions are 6.56" L × 4.18" W × 1.33" H, as shown below:
Figure 4: AI-Delta dimensions
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3.0 Audio input and output
The AI-Delta supportstwo types of audio I/O:
l2 USB ports
l2 DB-15 connectors
The following table shows the DB-15 connector's audio input values:
Characteristic Value
Input impedance 1.65 kΩ
Input level 4.5 Vpp max (2.2 Vpp differential)
Input gain 0 dB, +10 dB to +65 dB, software configurable (see note below)
Table 2: DB-15 audio input values
Note: The AI-Delta gain covers a total range of 65 dB. You can set the range of +10 dB to
+65 dB in 1 dB steps; however, you cannot select the range 1 dB to +9 dB as a function of
design.
The following table shows DB-15 connector's audio output values:
Characteristic Value
Impedance 10 Ω
Max. power 150 mW at 32 Ω
Max. output signal 3.75 Vpp at 150 Ω
2.4 Vpp at 8 Ω
Frequency response 20 Hz to 20 kHz
Table 3: DB-15 audio output values
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3.1 Audio interface pinout
The following figure shows the DB-15 connector pinout for the AI-Delta:
Figure 5: DB-15 connector pinout diagram
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4.0 Control inputs and digital outputs
The AI-Delta's two USB connectors and DB-15 connectors also function as control inputs. The
following sections describe the AI-Delta's control inputs and digital outputs, explaining how to
use the control input as a digital input or analog output.
4.1 Control inputs
The control inputs are contact-sensing; no voltage is required. Simply connect the control input
and control input ground lines together using a switch or other suitable device, such as a press-
to-talk (PTT) device. The control input can logically function as either a digital or analog input.
Figure 6: Control input circuitry
4.1.1 Control input as digital input
To use the control input as a digital input, simply short or open the required pins. For example, if
you short Pins 9 and 10, Control Input 1 is True. If the pins are open, Control Input 1 is False. In
this example, the control input acts like an on and off switch.
Figure 7: Digital In
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4.1.2 Control input as analog input
To use the control input as an analog input, insert a resistance between the control input and con-
trol input ground pins. The four-channel selector knob, for example, contains a switch that
changes the resistance between the control input and control input ground pins.
Figure 8: Analog In
4.2 Digital output
The digital output circuitry consists of an opto-isolated, solid-state relay for switching power to
external loads. The following table summarizes the AI-Delta's digital output opto-isolated field-
effect transistor (FET)values:
Type Opto-isolated FET
Maximum continuous current rating 120 mA
Maximum power dissipation 300 mW
Table 4: Digital output rating and dissipation
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AI-Delta Technical User Guide (Rev. A, Ver. 0)

The following figure shows the AI-Delta's digital output circuitry:
Figure 9: Digital output circuitry
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5.0 Memory devices
The following table summarizes AI-Delta devices with volatile and non-volatile memory. Volat-
ile memory is erased when you unplug the device, while non-volatile memory is retained.
Type Size User Modifiable Function Process to Clear
Volatile
CPU internal cache 512 KB No Internal cache for CPU Remove
Power
Count to 30
Restore
Power
Internal cache 128 KB No Internal cache Remove
Power
Count to 30
Restore
Power
RAM 1 GB No RAM Remove
Power
Count to 30
Restore
Power
Non-Volatile
eMMC 4 GB Yes Application Contact ASTi for more
information.
Table 5: Volatile memory
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6.0 Typical headset settings
The AI-Delta supports a mono or stereo headset connection for the DB-15 connector. The fol-
lowing figure shows a typical mono headset connection for the AI-Delta:
Figure 10: DB-15 mono headset connection
The following figure shows a typical stereo headset connection for the AI-Delta:
Figure 11: DB-15 stereo headset connection
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AI-Delta Technical User Guide (Rev. A, Ver. 0)

7.0 Warranty information
ASTi covers the equipment by warranty for one year following purchase. For equipment
upgrades, the warranty applies to the upgraded component's original shipment date. Unless oth-
erwise stated, ASTi also covers other provided or purchased commercial equipment (e.g., mon-
itors, amplifiers, speakers, and fiber optic links).
The warranty does not cover improper equipment handling or improperly packaged returns.
Extended warranties are available. Contact ASTi for details at [phone].
7.1 Repairs and returns
To return equipment to ASTi, observe the following:
1. Request a Return Material Authorization (RMA) number through the form at rma.asti-
usa.com/rma. ASTi's Production department cannot receive a repair without an RMA
number. The shipping label must also include the RMA number. Any items received from
customers without RMA numbers or appropriate contact information will not be tested.
After 60 days, ASTi reserves the right to scrap all hardware received in this condition.
2. When packaging the equipment in question, make sure it is well-protected. Failure to prop-
erly package the equipment during shipping could void the warranty.
a. Always double-box the device.
b. The inner container should employ some semi-rigid, contour-fitting foam, while the
exterior container should use a more pliant, shock-absorbing material, such as styro-
foam peanuts.
c. To prevent possible Electrostatic Discharge (ESD) damage, properly enclose the
device in an antistatic bag.
3. Do not send accessory pieces, such as rack mount kits, power supplies, or software. Only
include items that do not work.
4. Include a description of the problem, including the serial number for the unit in question.
Include point of contact information, including a name, telephone number, and equipment
return address. Failure to include this information could extensively delay the return of
equipment.
5. If you are an international customer, include the correct product value on all shipping doc-
uments. For proper harmonized tariff codes, contact ASTi. The customer is responsible
for duties, taxes, and fees incurred during shipment.
ASTi evaluates equipment free of charge and does not begin work without prior customer
approval.
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The customer is responsible for shipping charges to ASTi for warranty and non-warranty
repairs. If equipment is not under warranty, a purchase order is required to cover any repairs.
ASTi will provide a quote for all non-warranty items, including return shipping. The customer is
responsible for return shipping charges on non-warranty equipment. ASTi ships equipment still
under warranty back to the customer via FedEx, unless otherwise directed. ASTi is responsible
for return shipping charges on domestic items under warranty.
If ASTi does not receive the equipment 30 days after the RMA was issued, ASTi closes the
RMA and designates it as unused.
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