Specifications

Notification
Appliances
Hazardous Location
Devices
Door Holders
& Relays
Initiating
Devices
23
EST3
Network
SUBMIT
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EST3
Network
RS-232 Optical Isolator Card
The IOP3A is an optically isolated RS-232 card that electrically
isolates the power between the CM1(N), CM2N, FCC, and 3-CPU(1).
The IOP3A also provides power for use with short haul modems
and fiber optic drivers. The IOP3A is a 1/2 size footprint card that
is mounted in an enclosure adjacent to the CM1(N), CM2N, FCC, or
3-CPU(1). The module is powered by the system power supply
that provides battery back up. The IOP3A, through it’s on-card regulator, generates isolated power for the RS-232
drivers. The on-card regulator also provides isolated 12 Vdc power for use with external modems and drivers. Two RS-232
ports are provided that operate parallel with each other. A DB-9 connector is available for a convenient point of
connection for a system program download cable.
IOP3A Isolated RS-232 card Catalog Sheet: 270039
CDR-3 Coder
The CDR-3 Coder is an auxiliary circuit option module that pro-
vides two audio outputs, March Time and PSNI, (Positive, succes-
sive, non-interfering). Dry relay contacts are provided for PSNI
code, march time and duration. For the PSNI code, the RS-232C
input provides communications, between EST3’s RS-232 com-
munications card and the CDR-3. The RS-232 port is actively
supervised by the CDR-3. If the coder senses a loss of communi-
cation, the CDR-3 begins operating in a fail safe mode. When the fail safe mode is active all outputs, (tone and dry
contact) activate with a march time code. The CDR-3 provides buffering for up to fifty active codes. The mode and baud
rates are dipswitch selectable. The coder outputs four rounds of code and then, through DIP switch selected options, will
either: 1) stop and wait for next code; 2) continue; or, 3) change to march time code until reset.
CDR-3 PSNI Coder Module Catalog Sheet: 270009
MTM March Time Module
The March Time Coder provides March Time, Morse “S”, or Morse
“U” codes. The code, generated on-board, is selected by contact
closure or terminal block jumper configurations. The output is
provided through Form C dry contacts. The MTM is activated by
applying power through a contact closure.
MTM-1 March Time Coder Module Catalog Sheet: 270009
Network Short Haul Modem
EST3 networks easily configure for use over existing copper telephone lines using the 3-NSHM
Short Haul Modem Communications Interface. The 3-NSHM electronics card, plugs right into
the 3-CPU3. A ribbon cable connects the 3-CPU3 directly to the modem interface card. The
interface card mounts on the right rear of a 3-CHAS7 chassis. No local rail space is used. The
3-NSHMs the 3-MPFIB mounting bracket for 3-CAB5 enclosure mounting.
3-NSHM1 Network Short Haul Modem, single modem connection Catalog Sheet: 85010-0113
3-NSHM2 Network Short Haul Modem, two modem connections Catalog Sheet: 85010-0113