Emerson Fisher FLOBOSS 407 Instruction Manual page 117

FloBoss 407 Instruction Manual
4.2.5 Dial-Up Modem Communications Card
The Dial-up Modem Communications Card supports V.22 bis/2400 baud communications with auto-
answer/auto-dial features. Refer to Figure 4-5. The modem card is FCC part 68 approved for use with
public-switched telephone networks (PSTNs). The FCC label on the card provides the FCC registration
number and the ringer equivalent. The modem card has automatic adaptive and fixed compromise
equalization, thereby eliminating the need for pots to adjust or jumpers to move during installation and
setup.
LED INDICATORS
The modem card interfaces to two-wire, full-duplex telephone lines using asynchronous operation at
data rates of 600, 1200, or 2400. The card interfaces to a PSTN through an RJ11 jack. The modem can
be controlled using industry-standard AT command software. A 40-character command line is
provided for the AT command set, which is compatible with EIA document TR302.2/88-08006.
LED indicators on the card show the status of the RXD, TXD, DTR, DSR, RI, and OH control lines.
Refer to Table 4-1. The modem card also provides RS-232 level output signals for an analyzer. When
activated as described in Section 4.4.5, these signals are available at the COM2 terminal block.
Rev 5/00
C1
U1
J1
C4
U4
P1
C6
RP1
CR2
CR3
CR4
CR5
CR6
CR7
U5
C8
FB
C9
Y1
FB6
C7
Figure 4-5. Dial-up Modem Communications Card
P2
CR1
R1
R2
FB2
FB3
C2 C3
U2
C5
C18
FB C13
C10
U8
C16
P3
U6
R3
R4
U7
R5
COM PORTS
C17
DOC0245A
U3
J2
4-7