3
If you will be connecting the
RC-2A
to a telephone line or PABX extension (regardless of the mode you will be
using), the
RC-2A
is always monitoring the telephone line or PBX extension for the correct string of Touch Tones
dialed. If the correct string is detected, the
RC-2A
will operate the relay. For example, if you chose the Alternative
mode, programmed a single digit relay command of "
9
" and installed the
RC-2A
onto a telephone line or PABX
extension that is shared with other telephones, there could be a problem. As the other phones are making outgoing
phone calls, if they dial a phone number that includes the digit "
9
", the
RC-2A
will operate it's relay. In these ap-
plications, you must either use the Legacy mode and set a security access code (no rotary entry code switches
set to
D
), or use the Alternative mode and set at least one digit of the relay activation command to be either a "
Q
"
or “
#
".
1. Advantages
a.
There are "latch" and "unlatch" relay commands (10 and 19).
b.
There is a Touch Tone hang up command (8 or 18).
c.
A wider range of ring delay selections for remote access (1, 2, 6, or 15 rings).
2. Disadvantages
a.
When a security access code has been programmed (no code switches set to
D
), the complete digit string
to operate the relay is relatively long (6 digits total).
b.
The relay activation commands are fixed in software (not programmable).
c.
Limited "timed" relay activations available (5 seconds is the longest available).
1. Advantages
a.
Shorter length relay activation commands (can be 1, 2, or 3 digits in length).
b.
Wider range of timed relay activations available (up to 10 minutes maximum).
c.
You can program the digits dialed to activate the relay.
2. Disadvantages
a.
There are no "latch/unlatch" relay commands.
b.
There is no Touch Tone hang up command.
c.
Fewer ring delay selections for remote access (2 or 15 rings only).
B. Legacy Mode
C. Alternative Mode
Legacy Programming Mode
Important:
The
RC-2A
ships by default in the Legacy Programming mode (DIP switch 5
OFF
). Optional programming
is also available (see
Alternative Programming Mode
). The alternative programming mode dramatically changes
the programming and operation of the
RC-2A
. Use only the programming features described in the respective sections
for the programming mode you choose.
Note:
A security access code should be used, when the
RC-2A
is
used on a line with other equipment that may dial.
1. Setting the Security Access Code
2. Disabling the Security Access Code
If any rotary entry code switch is set to position “
D
” the security
access code is disabled. In this case, any call to the
RC-2A
will
have immediate access to activation codes (see page 5,
C. Relay
Activation Codes
).
Note:
When the security access code is dis-
abled, the setting of DIP switch 3 has no effect (unlimited closures
allowed).
A. Security Access Code
The
RC-2A
contains (3) rotary access/entry code switches (see
diagram right). Using a small flat blade screwdriver, rotate the
arrow on each switch to the desired access code setting. The
code may be any digit
0-9
or “
C
” (
#
on a Touch Tone pad).
Note:
For extreme security applications, a special telephone with a 4 x
4 keypad may be used (
DOD# 855
).
1
2
3
1
2
3
4
5
6
7
on
VIKING
©
MODEL RC-2A
REMOTE TOUCH TONE
RELAY CONTROLLER
VIKING
ELECTRONICS
HUDSON, WI 54016
RELA
Y
CONT
ACTS
N.O.
COM
N.C.
POWER 12V DC
1
2
3
ENTRY CODE
PROGRAMMING
SWITCHES
EARTH
GND
PWR IN/OUT
12-24V AC/DC
LINE IN
2
3
1
4
5
6
7
8
Rotary Access/Entry Code Switches
