APG DMS48, Руководство пользователя

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H LATENCY DELAYS G.1 AUX Port
the DMS48’s front panel, the first two snapshots are also recallable from the auxiliary port
using a binary combination of pins. The parameters inside Drive Module Presets are not
individually stored in Snapshots, so recalling a Snapshot will merely trigger the recall of the
appropriate Drive Module presets, rather than restoring the parameters that were active when
the Snapshot was stored. This has the distinct advantage that the library of OEM presets may
be updated without having to be concerned about what parameters might have been saved in
users Snapshots. It does however require that any existing edits to Drive Modules are stored
before a Snapshot is stored.
G.1 AUX Port
Either type of Snapshot (Partial or Full) may be recalled either via the device User Interface,
from the PWAPG application or via the AUX port on the rear of the DMS48. Snapshot 1 or
Snapshot 2 may be recalled using a binary combination of selections on the AUX port of the
device as follows:
AUX X AUX Y ACTION
Open Open No Change
Gnd Open Recall Snapshot 1
Open Gnd Recall Snapshot 2
Gnd Gnd Recall Snapshot 2
The above allows the AUX Port to be used either in Event mode (whereby a momentary
push-button or momentary relay contact closure on one of the AUX lines will cause a Snapshot
to be recalled). Or in State mode (where a rotary switch etc. connected to both of the AUX
lines selects which Snapshot to use).
Note: If the contact closure port is in use, this will override the setting in the menu.
Also see Snapshots on the preceding page.
H Latency Delays
All Digital Signal Processing, and conversion between different formats of signal analogue/
digital/ network etc., necessarily introduces some delay (latency) to the signal path. Of course,
we strive to minimise these latencies. Small as they are, it is sometimes useful to know their
precise values. The following describes the principal latencies introduced by various parts of
the processing:
Analogue Input 0.385ms
OR Digital input at 96KHz sample rate 0.5ms
OR Digital input at 48KHz sample rate 0.66ms
Analogue Output 0.402ms
OR AES3 Output 0.1ms
OR Dante Output 0.5ms (TBC)
Input HiShelf FIR 0.4ms (0ms if set to Off)
LIR Linear Phase crossover
1.19ms/Fhp(kHz)
limited to 30ms maximum (1)
VxLim Limiter (VX mode off)
0.12ms/Fhp(kHz)
limited to 2ms maximum (1)
OR VxLim Limiter
(VX mode on) 0.358ms/Fsplit(kHz)
limited to 9ms maximum (1)
User Manual DMS48 V1.1 25