The following information is from the ACU2 (v2) Technical User Guide. For a comprehensive overview of the ACU2 (v2), go to the full guide:
View GuideVersion 2 of the ACE Communication Unit – 2nd Generation, also known as the ACU2 (v2), is a compact, 48 kHz digital and audio distribution module that connects remotely located operator stations and live radios to the ACENet network. It provides low noise, analog-to-digital conversion, and low-latency audio distribution.
A comprehensive overview of the ACU2 (v2) can be found in the Technical User Guide.
| Compatible with | Telestra |
| Part Number | ACU2-04 |
| Dimensions | 7.9" length (depth) x 7.489" width x 1.724" height |
| Weight | A packaged ACU2 (v2) weighs 2 lbs. The included power supply weighs 0.5 lbs. |
| Power Source | Individual power supply, included. |
| Power Consumption | +15 VDC, 2 A |
| Mean Time Between Failure (MTBF) | 1,405,667 hours (COTS) 309,154 hours (military) |
| Impedance | 830 Ω single-ended (1.6K Ω differential) |
| Max Input Level | 6.5 Vpp |
| Gain | -8 dB, +2 dB to +57 dB; default value of 40 dB; software configurable* |
| Microphone Power | +12 VDC; off by default; software-enabled |
| Frequency Response | 20 Hz to 20 kHz, +/- 1.5 dB |
* The ACU2 (v2) gain covers a total range of 65 dB. Between +2 dB and +57 dB, the gain can be set in 1 dB steps. A value of -8 dB is available for input signals greater than line level. The range -8 dB to +2 dB cannot be selected as a function of design.
| Impedance | 10 Ω |
| Current | 0.15 A |
| Gain | -25 dB to +10 dB; default value of 10 dB |
| Level | 2.2 Vpp (1.68 VAC RMS) into 8 Ω |
| Power | 0.08 W at 8 Ω |
| Frequency Response | 20 Hz to 20 kHz |
| Max Output Signal | 5 Vpp |
| Type | Size | User Modifiable | Function | Process to Clear |
|---|---|---|---|---|
| MCU Internal | 512 KB | No | Used as RAM for an internal MCU | Remove power Count to 30 Restore power |
| Type | Size | User Modifiable | Function | Process to Clear |
|---|---|---|---|---|
| MCU Internal | 2 MB | Yes | Firmware | None |
| EEPROM | 32 KB | Yes | Device-specific settings | None |
RJ-12 Pinout for RS-422
(Serial Connection)
RJ-12 Pinout for RS-232
(Serial Connection)
DB-15 Connector
(Audio Interface)
RJ-45 Pinout
(ACENet Connection)