Connecting Line Power; Connecting Biphase Signal Code - Bosch LTC 7490 Installation Instructions Manual

EN
2. Make the applicable wiring connections in accordance
with the Connecting Line Power, Connecting Biphase
Signal Cable, Connecting RS-232 / RS-485 Signal Cable,
Connecting Video Cable, Connecting AutoTracker,
Connecting Alarm Sections (FIGURE 16 through
FIGURE 19).
Figure 16 Connector Installation

4.7.1 CONNECTING LINE POWER

(see WIRING GUIDE in this section)
Make the power line connections to the power
connector as follows:
1. Unplug the connector (FIGURE 17) from the
backbox.
Figure 17 Power Connector
2. Connect the neutral wire to the NEUT terminal,
and the line wire to the LINE terminal using a
flat-blade screwdriver. N/C is not used.
3. When power is applied, a red LED will light.
© 2003 Bosch Security Systems
Wiring Guide*
24 VAC, 20 VA Max
Wire Size
2
mm AWG
1 18
1.5 16
2.5 14
28 VAC, 20 VA Max
Wire Size
2
mm AWG
1 18
1.5 16
2.5 14
*If connected to an AutoTracker, the camera must be
within 15 meters (50 feet) of the AutoTracker.

4.7.2 CONNECTING BIPHASE SIGNAL CODE

1. If the camera is being connected to an
AutoTracker, go to SECTION 4.7.3.
2. Unplug the connector (FIGURE 18) from the
backbox.
Figure 18 Biphase / RS-232 / RS-485 Connector
3. Identify the (+) phase, (–) phase, and GND wires.
Use only twisted, shielded pair, Belden 8760 or
equivalent.
4. Connect the plus phase to the + terminal, the
minus phase to the – terminal, and the shielding
ground of the cable to the *GND terminal using a
flat-blade screwdriver.
NOTES:
*1. The biphase shield should be grounded at one end
only. The rcommended connection is at the signal
source.
**2. If the internal switch position #2 is set to ON
for RS-485 operation, then RXD functions as
DATA (+) and TXD functions as DATA (–).
Installation
Maximum Distance
m ft
70 225
100 350
175 570
Maximum Distance
m ft
270 750
370 1300
585 1900
Biphase*
RS-232/RS-485**
Page 11 of 16