Page 8
www.versitron.com
2.3.4
Default Jumper
The remaining jumper (JP3) is set in the default position and
should not be removed
. This jumper, if
removed, will cause the Modem not to work properly.
J3
DS1
DS6
DS3
DS4
DS5
P1
J1
J4
F1
Y1
1
U1
DS2
RX
TX
MADE IN USA
VERSITRON
JP5
ON
4
3
2
1
SW1
J7
JP1
JP2
JP3
JP4
Z1
Z2
SW2
ON
4
3
2
1
FIGURE 1.5 SWITCH AND JUMPER SETTINGS
2.4
POWER REQUIREMENTS
The Model F270X FOM II products are designed to operate from an AC power transformer or a DC
power source in the range of +12 to +18 VDC.
2.4.1
Installation with AC Power
Before inserting the VERSITRON power transformer, PSAC08 (US) or PSAC09 (EUR), into an AC
power source, the plug should be connected to the Modem. There are no special tools required.
2.4.2
Installation with DC Power
DC power may be used instead of a power transformer. This requires a 2.5 mm socket, J3 (location
shown in figure 1.5) with the positive voltage on the center and the common on the concentric supplying
12VDC at 1A as shown below:
FIGURE 1.6 DC POWER SUPPLY CONNECTIONS
++
−−
Center =
+
12VDC, 1A
Clip = Ground
