SENNHEISER Antenna Combiner User Guide
ACA 3
SENNHEISER
Sennheiser Documentation App
or online at www.sennheiser.com/download
Sennheiser electronic GmbH & Co. KG
Am Labor 1, 30900 Wedemark, Germany www.sennheiser.com
Printed in Germany, Publ. 05/19, 583927/A01
What is in the Box?
Setup
Operating elements
Front
Back
ON/OFF
ON/Standby
 | short | long |
ACA 3 | on | standby |
| active antennas | DC & RF on | off |
passive antennas | RF on | off |
| LEDs | on | off |
OFF
Specifications
| Frequency range | 470 – 798 MHz |
| Gain | 0 dB (±3 dB) @ 470-790 MHz |
| Output voltage | 12 V, 250 mA max (overload protected) |
| Connector | BNC female, 50 Ω |
| Power supply | 100-240 V~/ 50-60 Hz / 1A |
| RF input | +10 dBm max 10 mW / channel |
| RF output | IP3: >37 dBm (typ.); 1 dB cp: >20 dBm |
| Specials | Channel isolation (when switched OFF): 69 dB (typ.) |
| Operating relative humidity | 5 to 95% |
| Operating temperature range | -10 °C to +40 °C |
| Storage temperature range | –20 °C bis +70 °C |
| Dimensions (incl. rack mount ears) | approx. 43 x 483 x 205 mm |
| Format | 19 inch, 1U |
| Weight (incl. plug, cable) | approx. 2750 g |
Setup
LEDs
| short | long |
ACA 3 | RF | DC |
LED RF | on | off |
| LED DC | off | on |
LEDs | DC |
on  |
|
blinking | LIMIT |
off  |
|
Connecting devices
Example 1: Studio Comlex
Example 2: Large Church
Sennheiser — Headphones, Microphones, Wireless Systems
