NAL Research Corporation (TN2014-001-V1.4.5)
9
Table 1.
Pin Assignments for the 9602-LP Multi-Interface Connector.
4.1 External DC Power Input
DC power interface comprises of two DC power inputs and a ground input as summarized in Table 1. The
9602-LP accepts either +3.6VDC to +5.3VDC input through pin#1 or +6.0VDC to +32VDC input through
pin#9. The 9602-LP is shipped with hardware set for +3.6VDC to +5.3VDC input. It can be changed to
+6.0VDC to +32VDC input through an internal jumper—POWER MUST BE DISCONNECTED BEFORE RESETING
THE JUMPER. The jumper can be found by removing the modem’s top plate. With the 9602-LP held in the
position shown in Figure 2 (DB15 connector to the left), the 9602-LP is set for 3.6VDC to +5.3VDC when the
red jumper is on the middle and top pins and is set for +6.0VDC to +32VDC when the jumper is on the middle
and bottom pins. Each pin is also labeled with 5V and 32V to the left of the top and bottom pins, respectively.
Both the power pins on the multi-interface connector and their corresponding voltage settings on the jumper
must be used for the unit to power up properly.
NOTE:
User MUST remember not to apply voltage higher than
5.3VDC on pin 1 (or accidently swap voltage between pins 1 and 9). The 9602-LP will be damaged beyond
repair with warranty voided if this were to occur.
IMPORTANT:
User can remove the 9602-LP’s top plate to set the jumper but not for repair
or services. The warranty is voided if the 9602-LP is disassembled for any reason other than
to set the jumper.
Cables used to supply power to the 9602-LP should be kept as short as possible to prevent significant
voltage drop, which can cause the 9602-LP to malfunction during an SBD session. Power reset by the 9602-
LP during an SBD transmission is an indicative of the DC power source unable to sustain voltage above 3.0VDC
at peak current demand. Plots of DC power requirement for the 9602-LP are found in Appendix A.
4.2 RS232 Serial Data Interface
The 9602-LP supports 3-wire serial interface to a host DTE through the multi-interface connector. The
serial connection comprises of a transmit (Tx) line on pin 3, a receive (Rx) line on pin 4 and a signal GND on
pin 5 as described in Table 1. The 9602-LP does not support auto-baud and the default baud rate is factory
set at 19.2 kbits/sec. The baud rate can be reconfigured with the +IPR command ranging from 4.8kbits/sec
to 115.2kbits/sec.
Figure 2.
Power Input Setting for the 9602-LP.
Jumper used to
set input voltage
range