AP Instrument Accessories
Audio Precision offers several accessories to make audio test and measurement easier.
Interface cards and audio cables
Audio Precision's PC-controlled audio analyzer systems include the 2700 Series and ATS-2, and also discontinued products such as the System One and System Two audio analyzers.These systems connect to the controlling PC by the Audio Precision Interface Bus (APIB). An APIB PC interface card or USB Adapter and cable of your choice are included with a new analyzer system. Additional APIB cards and cables are available to suit your needs.
All APx Series analyzers are connected directly to the control PC by USB, though APx uses the USB adapter to control switchers from APx.
Audio Precision offers a variety of audio cables to facilitate interconnection of our analyzer systems to devices under test. These cables have been optimized for performance and convenience of use in the applications they are intended to serve. In some cases, general-purpose cables can actually degrade the accuracy and performance of high-quality measurement equipment by employing improper or inadequate shielding or grounding techniques. Sometimes, it may be inconvenient or difficult to find cables of the correct length or with the required connectors. We have chosen these custom-made cables to maintain the full performance of our measurement equipment, and have applied appropriate details such as color coding and adapters for maximum convenience.
USB Adapter
- Adapter to connect APIB interface on AP instrument to controlling PC via USB rather than an APIB card installed in the PC.
- Includes USB cable, DB-25 APIB cable and software discs.
- Select option "USB interface" when specifying new instrument or to order separately for existing systems request the "USB-APIB Adapter" from Sales Partner.
- Requires AP2700 v3.30 or ATS v1.60 or later, so will not work with analyzers earlier than System Two Cascade.
The USB-APIB adapter includes both a USB cable and a 2 meter APIB interface cable, used to connect the interface adapter to the instrument and to daisychain accessories such as the PSIA, DCX-127, or switchers. Additional cables of different lengths are also available.
APX Cable Kits
- CAB-520 4 XLR cables, 4 BNC cables, ground strap
- CAB-525 Includes above items for CAB-520 cable kit, with 2 additional AES/EBU digital XLR cables
- CAB-585 DB25M to DB25M balanced loopback cable, 11 BNC to BNC 14′′ analog and digital coax loopback cables, 2 AES/EBU cables, DB25M to 8-XLR male cable; DB25M to 8-XLR female cable, 18 BNC to RCA adapters, ground strap
- CAB-HDMI Set of four HDMI cables
- CAB-586 Cable kit for APx586 (includes above items for CAB-585 kit, with additional XLR to DB25 input cable for the second input module)
- CAB-DB1 DB25M to DB25M balanced loopback cable (2 ft.)
- CAB-DB2 DB25M to DB25M balanced loopback cable (3 ft.)
- CAB-BNC 9 9 BNC to BNC 14′′ analog and digital coax loopback cables
- CAB-DBXM DB25M to 8-XLR male cable
- CAB-DBXF DB25M to 8-XLR female cable
- CAB-BNC 1 BNC to BNC 14′′ analog and digital coax loopback cable
- CAB-APSI USB cable
- CAD-RCA18 Set of 18 BNC to RCA adapters
- CAB-GND Ground strap
2700 / SYS-2 /ATS-2 Cable Kits
- CAB-D0 Extension APIB interface cable, 0.5 meter (for all interface cards except PCMCIA)
- CAB-D2 Extension APIB interface cable, 2 meters (for all interface cards except PCMCIA)
- CAB-D6 Extension APIB interface cable, 6 meters (for all interface cards except PCMCIA)
- CAB-PCM2 APIB Interface cable, 2 meters (for PCMCIA interface cards only)
- CAB-XMF XLR male to XLR female cable kit (4 color-coded cables)
- CAB-XBR Set of four XLR male/female to RCA/BNC cables (not recommended for analyzer input)
- CAB-AES Set of two AES/EBU cables, 1 meter
- CAB-AES2 Set of two AES/EBU cables, 2 meters
- CAB-AES4 Set of two AES/EBU cables, 4 meters
- CAB-DI0 Set of two 1.3 meter parallel digital interface cables to connect between SYS-2722 rear panel parallel digital input/output (miniature 50-pin ribbon connectors) and user’s DUT fixture.
- CAB-2010 Set of four specialty cables for testing PC audio devices
- CAB-MINI Unbalanced test cable (3.5mm stereo jack to RCA/BNC)
- CAB-6BNC PSIA device interface cable (6 BNC to two-pin connector)
Detail on cable kits
Cables for analog interconnection
CAB-XBR: Consists of four cables: two XLR male to RCA/phono male, and two XLR female to RCA/phono male. Four gold-plated adapters (supplied) convert the RCA connectors to BNC male, allowing this cable kit to handle virtually all unbalanced hook-ups. The four cables are each 8 feet (2.4 meters) long Mogami super-flexible shielded cable, and have a unique colored identification ring at each end. The cables are wired with pin 2 of the XLR connector as "+" or "high", connected to center pin of the RCA connector; pin 3 as "-" or "low", connected to the outer ring of the RCA connector; pin 1 is connected to the cable shield at the XLR end of the cable, which is unconnected at the RCA end. This agrees with the unbalanced wiring convention of Audio Precision instruments.
CAB-XMF: Includes four 8-foot (2.4-meter) XLR male to XLR female cables, each of which has a unique color identification band. The cables are made from Mogami super-flexible, four-conductor shielded cable. Wiring is "balanced-quad connection."
CAD-RCA: Several Audio Precision instruments include BNC connectors for unbalanced connections to devices under test, as is the unbalanced switcher. If the device under test uses RCA/phono connectors and it is desired to use common RCA/phono-to-RCA/phono cables, these adapters will convert the instrument BNC connectors to RCA/phono. The set includes 14 adapters to allow complete conversion of an unbalanced switcher.
Cables for digital interconnection
CAB-AES: These cables are manufactured using high-quality, correct-impedance shielded cable and high-quality, well shielded connectors that provide solid ground connections. While standard analog "microphone cables" may be able to mate with the 3-pin AES-EBU XLR connectors, they do not provide the correct impedance and usually have inadequate shielding for the fast-rise digital signals present in an AES-EBU data stream. Their incorrect characteristic impedance will degrade the signal integrity and make interface measurements inaccurate.Each of the cable sets (AES, AES2, AES4) consists of a pair of AES/EBU cables with XLR male connectors on one end and SLR female connectors on the other. The three sets differ only in length.
- CAB-AES, 1 meter CAB-AES2, 2 meters
- CAB-AES4, 4 meters
CAB-DIO: This package contains a set of two (input and output) connecting cables, to interface a device under test fixture to the rear panel parallel digital connections on a 2700 Series, System Two or Cascade analyzer.
The shielding on the connectors and cable will preserve the integrity of the CE-conforming low EMI emissions from the instrument, The cables are 6 feet (2 meters) long, allowing convenient placement of the device under test in front of analyzers while the cables connect to the rear panel.
Anthro cart
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With its flexible design, rugged construction and room for a personal computer and printer, this cart is the perfect roll-around workstation for 2700 Series or ATS-2 audio analyzers. Supports up to 330 lbs (150 kg). Additional cart configurations are available from Anthro. |
Measurement microphone kit
Download Measurement Microphone Data Sheet (PDF)
An accurate measurement microphone is a critical component in acquiring acoustic signals for loudspeaker testing, room analysis, and noise measurements.
Our Measurement Microphone Kit provides exceptionally high accuracy for single-mic acoustic measurements. Add a second mic for 2-channel acquisitions, and a microphone calibrator for an acoustic reference source.
Rack mount kits
RAK-S2
RAK-S2 rack mount kit for 2700 Series instruments. Includes both fixed brackets and parts to integrate with user-supplied chassis slides. Will also fit Audio Precision System Two and Cascade instruments.
Note: The slide-rack mounting kit is intended to be used with Chassis Track C-300-S Series non-pivoting solid bearing chassis sections from General Devices Inc, Indianapolis, IN. These chassis sections are available in several lengths to fit a wide variety of racks.
ATS2-RAK
ATS2-RAK kit allows you to mount the ATS-2 in a standard EIA rack. It occupies two rack units (2RU) (3.5” vertically). The kit consists of brackets that attach to the side of the ATS-2 to provide front and rear support. The rear brackets are adjustable to fit various rack depths. The kit also includes a small “filler” panel to extend the height of the ATS-2 to the nominal 3.5-inch rack height.
You can mount the ATS-2 flush to the rack rails, or set it back by 1.5" to minimize the protrusion of front cables. The extra space at the bottom of the mounting allows the cables to be dressed to the back of the rack under the ATS-2.
RAK-ATS
RAK-ATS enables the rack mounting of an ATS-1 instrument. Two methods are possible: fixed brackets, or slide-track mounting. The slide tracks themselves are not furnished, but the slide mount capability is compatible with the Chassis Trak Models C-300-S-114 (14-inch rack depth), C-300-S-116 (16-inch rack depth), and C-300-S-118 (18-inch rack depth) rack mounts available from General Devices, Inc.
Step by step instructions for the ATS-1 Rack Mount Slide kit are in Appendix B of the ATS-1 User's Manual.
Note: Conversion from bench-top to rack-mount configuration does not require the removal of the covers. Also note that the top and bottom covers may be removed from a slide-rack mounted ATS-1 without removing the unit from the rack or from the slides.
RAK-P1
RAK-P1 provides a rack-mounted shelf for your Portable One instrument.
RAK-SIA2
RAK-SIA2 rack-mount brackets for the PSIA-2722.
RAK-12
RAK-12 rack-mount brackets for DCX-127. Will also mount GAT-1, SIA-322 and SWR-122.
RAK-212
RAK-212 rack-mount brackets for SWR-2755 and SWR-2122. RAK-212 brackets allow mounting the switcher flush with the front of the rack, or set back to keep connectors inside the rack.
Test Discs
These CD and DVD test discs all contain signals appropriate for measuring frequency response, THD+N versus frequency, and at least one form of intermodulation distortion. Most contain signals suitable for interchannel phase, stereo separation, noise, and signal-to-noise ratio measurements; most also contain some unique signals. Some CDs have "glide tone," signals continuously swept across the spectrum, permitting frequency response and interchannel phase versus frequency measurements with the greatest resolution.
DSK-JAS: Japan Audio Society DVD-V1 |
This DVD test disc includes test signals in PCM mode at 48 kHz/24 bit and 96 kHz/24 bit. It also includes Dolby Digital Surround 48 kHz 5.1 channel test signals and DTS Surround 48 kHz 5.1 channel test signals. Over 42 tracks. |
DSK-NAB: NAB Broadcast and Audio System Test CD, vol. 1 |
Several test signals useful to broadcast and audio test engineers, including special FM and TV test signals. |
DSK-PHI: Philips Audio Signals Disc 1 SBC429 |
Includes several audio signals useful in measuring the performance of a compact disc player. The CBS and Philips discs provide fixed-frequency signals over a wide amplitude range for measuring distortion versus amplitude and linearity; the Philips SBC429 provides the most amplitude levels. |