Instruction manual

main link bandwidth is always fully utilized, however not all
types of user equipment can support the dynamic changes in
clock rate that occur in this mode.
See Table 1-1 for the available data rates.
N/ADPT1 The DV-MUX3 operates as a master, and uses the non-adap-
tive 1 allocation mode. In this mode, the DV-MUX3 deter-
mines the data rate of the data channel as in the adaptive mode,
except that the bandwidth required by the voice channel is per-
manently allocated. This mode achieves the best utilization of
the main link bandwidth when the data channel data rate can-
not be dynamically changed.
See Table 1-1 for the available data rates.
N/ADPT2 The DV-MUX3 operates as a master, and uses the non-adap-
tive 2 allocation mode. In this mode, the DV-MUX3 allocates
the data channel the highest standard data rate that fits within
the bandwidth left after allowing for the voice channel and link
management and supervision overhead.
See Table 1-2 for the available data rates.
SLAVE DV-MUX3 operates as slave unit, that is, its configuration is
determined by the information downloaded through the main
link by the remote unit.
The use of a master-slave configuration expedites link setup
and reduces the chance of configuration errors, therefore
whenever feasible, set the MODE jumper of one of the DV-
MUX3 units operating in a link to the SLAVE position.
If you set the jumper to this position on both units operating
in a link, a configuration error indication (TEST indicator
flashing, SYNC LOSS indicator off) will be displayed after
the DV-MUX3 units synchronize.
The default setting is ADAPTIV.
NOTE
In a master-slave configuration, the allocation mode set on the
DV-MUX3 unit selected as master is downloaded to the slave
unit, and overrides the local slave setting. The master-slave
configuration is mandatory for the dial-up mode.
SWITCH Control
Jumper, J1
This jumper allows to disable the front-panel PATT and RLB push-buttons, to pre-
vent the activation of tests and loops by unauthorized persons.
The jumper has two positions:
ENBL The front-panelpush-buttons can control the activation of tests
and loops.
DSBL The front-panel push-buttons are disabled and do not have any
effect.
The default setting is ENBL.
CHAPTER 2 - INSTALLATION
2-6 DV-MUX3 Installation and Operation Manual