*Image is illustrative — actual configuration is built to specification.

The Accordion A2 Build is the same chassis, control system, and software stack as the Lite and Plus bundles — assembled to a specification matched to a single test bench. Where the Lite and Plus ship with fixed module sets, the Build is assembled from the standard Accordion module library to fit a specific application: power profile, channel count, communication interfaces, instrumentation, and form-factor constraints.

At a glance

• Platform: Accordion A2
• Configuration: Built to specification from the Accordion module library
• Base chassis (always included): 233 × 129 × 60 mm; USB-C 130 W (USB-PD); RJ45 1 Gbit; 2× USB-A 2.0 + 2× USB-A 3.0
• Available slots: 4× SO-DIMM (T1–T3, A1), 4× N-TOP (N1–N4), 2× front-panel M.2 (M1, M2), and a dedicated communication TOP
• Control: Accordion Pilot (GUI), Accordion Shell (CLI), Web API, Python, .NET, TestStand — same APIs across every configuration
• Compliance: CE, RoHS, REACH

What it does

The A2 chassis is software-defined. Every channel is addressable by name; every protocol bus and every supply rail is configured at runtime. Modules are slot-mapped into the chassis (top-side SO-DIMM and N-TOP, front-panel M.2, dedicated communication TOP), and a custom configuration stays consistent with the Accordion naming convention so existing Pilot workspaces, TestStand sequences, and Python or C# scripts continue to work as the bench evolves.

A custom build is appropriate when the bundled configurations do not fit — for example, when the test programme needs more programmable rails than the Plus carries, an instrument the standard bundles do not include (precision ADC/DAC, battery simulation, audio), or a specific mix of channel types the Lite cannot provide. The chassis is the same in every case; only the populated modules differ.

What you can build

Modules are picked from the Accordion module catalog. Examples by purpose:

• Programmable power: M.2 PSU module (ESH10000533) — dual channel, 0–20 V, 0–10 A, 60 W combined, PMBus telemetry. Mini-PSU (ESH10000662) for lower-power rails.
• High-density mixed-signal I/O: MPIO-96 SPI module (ESH10000568) — 96 channels of 12-bit analog and pseudo-digital I/O. 6× IDC breakout (ESH10000355) for fixture wiring.
• Precision instrumentation: Precision ADC/DAC module (ESH10000590) when 12-bit MPIO is not enough.
• Communication and control: Communication module (ESH10000359) — 2× I²C, UART (RS232), SPI, JTAG with programmable rails, fan headers, and RGB status LEDs.
• Battery simulation: Battery Simulator (ESH10000556) for charge/discharge profiles and protection-circuit testing.
• Specialty: PoE M.2 module (ESH10000534), Tone audio module (ESH10000560).

The full module catalog, with datasheets and integration notes for each, is at help.esharp.se/accordion-modules.

How it fits into Accordion

A custom A2 is a fully fledged Accordion node — reachable on the network by hostname or IP, addressable through Accordion’s standard channel-naming convention, and controllable from any of the Accordion clients. Lifetime licenses for Accordion Pilot and Accordion Shell are typically included; bundled software depends on the configuration agreed during specification.

Full specifications

The Accordion A2 platform reference — chassis layout, slot mapping, calibration, firmware, and the complete module catalog — is maintained in the E-Sharp help center. See the Accordion A2 platform page and the Accordion module catalog.