PCX SMS AND PCX 256 SYSTEM MANUAL
Page: 110 RINS871-3
CHAPTER 14: THE DIGI MODEM CARD
The Digi-Modem card is design to slot into a SIMM socket (Communication card) on either the PCX 26/SMS
or the PCX 256.
PCX-COM9600
© Pyronix Ltd
UK, 2003
G1
Q3
K1
D2
C20
R15
Q2
R22
R5 R11
C8 C15
D3
D4
D7
C21
X1
u1
U2
XC1
U1
C3
C4
Note: Attempts to use the device in any other host will invalidate the safety certification,
could cause damage to the equipment, and may be hazardous.
The card must be installed and used as described in these installation instructions.
All connections to the end station are made automatically. Terminals for connection to the PSTN are located
on the end station PCB.
When the unit is used on a shared line, the total REN loading of the line must not exceed 2.5. The REN
value of any piece of equipment which is not marked should be assumed to be 1.
The REN value of the DIGI MODEM CARD is 1.
14.1 Fitting the Digi-Modem Card to the End Station
Before slotting the Digi-Modem card into the SIMM slot on the end station, all power must be
disconnected.
The card must be slotted into the correct socket (labelled communication card) on the end station. This is the
upper socket.
Tow a rd s TO P
edge of PCB
Socket for
Digi Modem
Socket for
MSX Card
ENSURE THAT CORRECT
SOCKET IS USED
- They are interchangeable
not
Note: Card snaps into place
and is retained by springs
Insert card at
slight angle
Ease to
vertical
position
C
O
M
M
U
N
I
C
A
T
I
O
N
C
A
R
D
E
X
P
A
N
S
I
O
N
C
A
R
D
S
L
O
T
Should it be necessary to remove the unit, the reverse procedure should be performed, ensuring that all
power is removed before doing so.
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