Specifications

Installation and Operation Manual Chapter 2 Installation and Setup
ASMi-31 Ver. 3.0 Setting Internal Jumpers 2-3
 To configure the ASMi-31 jumpers:
1. Disconnect all cables from ASMi-31.
2. Locate and open a lid on the bottom panel at the rear of the ASMi-31
modem.
3. Set internal jumpers, according to
Table 2-1 .
4. Close the bottom panel lid.
Now you can proceed with the line, DTE and power connections as
described below.
Setting JP10 to DIS may invalidate the safety of connection to telecommunication
networks where permanent hazardous voltages are present on the lines.
Rear Panel
DIS
OLD
CON
NEW
CHASS
COMPAT
JP10
JP11
Figure 2-1. JP10 and JP11 Jumper Locations
ASMi-31 also contains additional jumpers and switches, which are factory-set and
must not be moved by the user.
Table 2-1. Jumper Settings
Jumper Function Possible Settings (default settings in bold)
JP10, CHASSIS Controls connection between signal
ground and chassis ground
CON – Signal ground is connected to chassis
ground
DIS – Signal ground is isolated from the chassis
ground
JP11, COMPAT Controls the ASMi-31 compatibility with
the older products.
See
Making ASMi-31 Compatible
with Older Products
below
NEW – All the features of the unit's current
version are enabled
OLD – The unit's new features are disabled.
ASMi-31 is fully compatible with older
products.
Warning
Caution