DTMF/FSK Mode
The V732 includes a special data mode to transport
DTMF/FSK control signals. This configuration is bidirec-
tional, full duplex. This feature is included in the V732 as a
control signal data path used on some PTZ control equip-
ment. It can be utilized in two ways (refer to Table 9):
1. (Single-ended stereo operation) For stereo operation,
left and right channels are referenced to ground.
2. (Differential operation, single channel) In this configu-
ration, most popular with DTMF systems, signal is input
differentially to Diff In + and Diff In - pins. Likewise, sig-
nal is output on Diff In + and Diff In - pins.
In DTMF/FSK mode, DATA IN and DATA OUT LEDs vary in
intensity based on the input levels. Levels less than 24 dBu
result in the corresponding LED being OFF. The LED will
glow brighter green and the level increases to 0 dBu.
Data Translation
The data translation capability of the V732 series is unique
in the industry. It allows translation from one format to
another, thus eliminating the need for external translation
devices.
The translation is in the physical layer only; it cannot inter-
pret specific protocols, nor do command translations. Due
to the encoding schemes utilized in Manchester and
Biphase, these formats are exempt from translation. Data
translation examples are shown in Table 11.
INSTALLATION
Installation Considerations
This fiber-optic link is supplied in two forms, as a stand-
alone module and as a rack card. Units should be installed
in dry locations protected from extremes of temperature
and humidity.
Standalone Modules
1. Determine where the module is to be installed and
ensure that there is adequate space at both ends for
making the various cable connections and for reading
the diagnostic LEDs.
2. Standalone modules are provided with mounting holes
for four No. 6 screws (3-mm or 3.5-mm screws). The
type of screw chosen must be suitable for the surface
on which the module is to be mounted.
Rack Cards
Rack cards are designed to be installed in one of Vicon’s
19-inch (483-mm) EIA standard card-cage racks, either the
V515R-PS or the V517R-PS. Follow these steps after
selecting data format, contact closure and alarm output.
CAUTION:
Although a rack card may be installed
without turning off power to the rack (hot-swappable),
Vicon recommends that the power switch on the rack power
supply is turned OFF and that the rack power supply is dis-
connected from any power source.
1. Make sure that the card is oriented right-side up and
slide it into the card guides in the rack until the edge
connector at the back of the card seats in the corre-
sponding slot in the rack’s connector panel. Seating
may require thumb pressure on the top and bottom of
the card’s front panel.
CAUTION:
Take care not to press on any of the
LEDs.
2. Tighten the two thumb screws on the card until the front
panel of the card is seated against the front of the rack.
CONNECTIONS
Data Connections
Connect the data cable to the removable 8-pin screw ter-
minal on the V732 according to Tables 2 - 10 for the data
format selected above. When making data connections,
always wire the DATA OUT pins on the fiber links to the
3
DIGITAL VIDEO AND BIDIRECTIONAL DATA SYSTEM
Setting
Mode
0
Disabled (factory preset)
1
RS-232
2
RS-232 + handshake
3
TTL
4
RS-422 2-wire
5
Manchester/Biphase
6
RS-485 2-wire standard
7
RS-485 2-wire 1V
Setting
Mode
8
RS-485 2-wire 2V
9
RS-485 4-wire standard
A
RS-485 4-wire 1V
B
RS-485 4-wire 2V
C
Reserved
D
Audio/DTMF
E
Test Mode Rx
F
Test Mode Tx
F
1
0
E
D
2
3
5
6
7
8
C
B
A
9
4
TABLE 1: DATA SELECT SWITCH SETTINGS
