User manual
12
Wiring the unit
CONNECTING THE HERA WHEN USED AS A STAND-ALONE DEVICE
Connect the microphone supplied with the Hera to the microphone input located on the rear panel (see rear panel drawing).
In the installer menu, the operation mode must be set in ‘standalone’. Refer to the section “installer menu” for details.
CONNECTION WHEN THE HERA IS USED TOGETHER WITH THE ARGOS
Connect the microphone supplied with the Hera to the
microphone input socket located on the rear panel of the
Hera. Connect an XLR cable from the connector marked ‘To
Argos MIC INPUT’ on the Hera to the microphone input on
the Argos. Connect the data cable to the ‘TO Argos’ socket
on the Hera to the connector marked ‘TO Hera’ on the Argos.
The data cable is type DB15 male to DB15 female cable pin
to pin in direct numbering sequence (1 to 1, 2 to 2, and so on
up to 15). The XLR cable should be connected in the same
manner. Be very careful NOT TO CONNECT the earth to
the chassis and denitely be especially careful not to make
any solder links between pin 1 and the metal chassis of the
socket.
The wiring protocol is 1 = GROUND, 2 = HOT, 3 = COLD.
CAUTION: Because of wide tolerances in microphone
manufacture and the need to obtain an exact sound
pressure level reading, the microphone delivered with the
Hera and the Hera itself are a complementary pair, i.e. they
are calibrated together at the factory.
ALWAYS USE THE MICROPHONE SUPPLIED WITH THE
HERA !
Connecting the Hera to the Argos