Orban OPTIMOD-FM 5518, Operating Manual

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2-4
INSTALLATION ORBAN MODEL 5518
6. Connect tally outputs (optional)
See the schematic on page 6-32.
The 5518 supports two hardware tally outputs, which are NPN open-collector
and operate with respect to pin 1 (common). Therefore, the voltage applied to
the load (such as a relay or opto-isolator) must be positive. You can use the 12
VDC source on pin 25 to drive the high side of the load, taking into account the
fact that the voltage on pin 25 is current limited by a 300
Ω
resistor.
The tally outputs are protected against reverse polarity.
To avoid damaging the 5518, limit the current into a tally output to
30 mA. DO NOT connect a tally output directly to a low-impedance
voltage source! The tally outputs are not protected against this
abuse and the output transistors are likely to burn out.
Note that the tally outputs have no special RFI protection. Therefore, it is wise to
use shielded cable to make connections to them.
See step 28 on page 2-21 for instructions on using the tally outputs.
7. Connect to a computer
You can connect to a computer via the 5518’s serial connector or via an Ethernet
network. (See
Networking on page 2-42.)
Procedures and instructions for connecting to a PC are subject to development
and change. We advise you to download the latest version of this manual in pdf
format from
ftp.orban.com/5518/Documentation .
You can use Adobe’s .pdf reader application to open and read this file. If you do
not have the .pdf reader, it is available for free download from
www.adobe.com
.
See Installing 5518 PC Remote Control Software on page 2-47 for more detail.
5518 Rear Panel
[See page 3-1 for a description of the 5518’s front panel.]
The Power Cord is detachable and is terminated in a “U-ground” plug (USA stan-
dard), or CEE7 / 7 plug (Continental Europe), as appropriate to your 5518’s Model
Number.
An RS-232 (PC Remote) Computer Interface, labeled
S
ERIAL , is provided to con-
nect the 5518 to IBM PC-compatible computers, directly or via modem, for remote
control, metering and software downloads.
A Remote Interface Connector allows you to connect the 5518 to your existing
transmitter remote control or other simple contact-closure control devices. The 5518
remote control supports user-programmable selection of up to eight optically-
isolated inputs for any one of the following parameters: recalling any factory- or
user presets, tone or bypass modes, selecting stereo encoder modes (stereo, mono-