Power supplies, Rs232 printer port, Fcc requirements – Sensaphone Express II User Manual
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Sensaphone
®
Express II User’s Manual
POWER SUPPLIES
Express II will provide battery-backed 12 Volts DC (100 mA max.) and 24 Volts DC (400 mA
max.) to power current loops and other external devices.
RS232 Printer Port
Express II comes with a cable and DB25 connector for connection to a serial printer. This can
be used to perform data logging of input values and/or unit activity directly to a printer (see
Chapter 5). You may also print the unit’s programming parameters (see Chapter 7). The RJ11
connector at the end of the cable must be connected to the RJ11 jack labeled RS232 on the
main board, located below the access panel. The default baud rate of the RS232 port is 9600
baud. The baud rate may be changed from the System menu under Unit Configuration (see
Chapter 5). The communications protocol is 8 data bits, no parity, and 1 stop bit. Shown below
are the RS232 pin descriptions for the DB25 connector.
Pin
Signal
Symbol
Direction
1
Frame Ground
FG
N/A
2
Transmitted Data
TD
From Printer
3
Received Data
RD
From Express II
6
Data Set Ready
DSR
From Express II
7
Signal Ground
SG
N/A
20
Data Terminal Ready
DTR
From Printer
FCC REQUIREMENTS
PART 68—This equipment complies with Part 68 of the FCC rules. On the side of the
enclosure there is a label that contains, among other information, the FCC Registration Number
and the Ringer Equivalence Number (REN) for this equipment. You must, upon request,
provide this information to your local telephone company.
The REN is useful to determine the quantity of devices that you may connect to your telephone
line and still have all of those devices ring when your telephone number is called. In most, but
not all areas, the sum of the REN’s of all devices connected to one line should not exceed five
(5.0). To be certain of the number of devices that you may connect to your line, you may want
to contact your local telephone company to determine the maximum REN for your calling area.
This equipment may not be used on coin service provided by the telephone company.
Connection to party lines is subject to state tariffs.
Should Express II cause harm to the telephone network, the telephone company may
discontinue your service temporarily. If possible, they will notify you in advance. But if
advanced notice isn’t practical, the telephone company may temporarily discontinue service
without notice and you will be notified as soon as possible. You will be informed of your right
to file a complaint with the FCC. The telephone company may make changes in its facilities,
equipment, operations, or procedures where such action is reasonably required in the operation
of its business and is not inconsistent with the rules and regulations of the FCC that could affect