27
TIP
switch TIP
switch RING
GND
RING
Zero Latency Monitoring
Zero Latency Monitoring (ZLM)
PUC2 offers a special zero latency monitoring (ZLM) feature. ZLM bypasses the
USB audio path with all its conversion latencies, offering a residual latency of
typically less than 3ms. To activate ZLM you will need an external switch.
In order to avoid overloading of the output when mixing USB audio with ZLM
audio, both signals will be attenuated at -6dBm each. To override this default
attenuation you can use another external switch. Please refer to the table
below.
Switch Tip (ZLM)
closed
closed
open
open
Switch Ring
open
closed
closed
open
Audio Output
PUC2 Line / PUC2 Lite
ZLM Input mixed
with USB Output
(both at -6dB)
ZLM Input mixed
with USB Output
(without attenuation)
USB Output only
USB Output only
Headphone Output
PUC2 Mic LEA
ZLM ON for Ch.1
ZLM ON for Ch.1 + Ch.2
ZLM ON for Ch.2
ZLM OFF
