Hertz H8 DSP User Manual page 8

H8 DSP
Digital Interface Processor
3. KEY MEM:
To turn the processor on and off when the vehicle ignition is turned on / off.
Remark: This signal is memory-dependent: if the processor was turned off by a car sub-key connected to the KEY MEM,
it will turn on again by turning the ignition key on. If the processor was turned off by a different method (e.g. DRC)
while the KEY MEM was still active, it will not turn on again through the KEY MEM and you will have to turn it on by
using either the DRC or REM IN.
4. OPTICAL SEL / AUX SEL:
Selection of the auxiliary OPTICAL or AUX inputs. The terminals can be set up with positive or negative selection. This
function is active at + 12V by setting up the UCS switch as shown in fig. 1, while to obtain a –BATT (GROUND) set up
the switch as shown in fig. 2.
AUX SEL
OPTICAL SEL
5. MEM A SEL / MEM B SEL:
Selection of the DSP "MEM A" o "MEM B" memories. The terminals can be set up with positive or negative
selection. This function is active at + 12V by setting up the UCS switch as shown in fig. 3, while to obtain a –BATT
(GROUND) set up the switch as shown in fig. 4.
MEM
MEM
6.
DRC:
DRC (Digital Remote Control) connection to configure the processor.
7 USB:
USB (type B) connection plug, to connect the processor to a PC and manage its functions through the H8 DSP
software. The connection standard is USB 1.1 / 2.0 / 3.0 compatible.
Fig. 1
TO + 12 V
TO GND
Fig. 3
TO + 12 V
TO GND
A SEL
B SEL
TO + 12 V
TO GND
AUX SEL
OPTICAL SEL
TO + 12 V
TO GND
MEM A SEL
MEM B SEL
User's manual 4
Fig. 2
Fig. 4
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