5500 Rear Panel - Orban OPTIMOD-FM 5500 Operation Manual

2-4
INSTALLATION

5500 Rear Panel

6. Connect tally outputs (optional)
See the schematic on page 6-32.
In stereo encoder mode, the 5500 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, tak-
ing 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 5500, 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 12 on page 2-27 for instructions on using the tally outputs.
7. Connect to a computer
You can connect to a computer via the 5500's serial connector or via an Ethernet
network. (See Networking on page 2-43.)
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/5500/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 5500 PC Remote Control Software on page 2-49 for more detail.
[See page 3-1 for a description of the 5500'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 5500's Model
Number.
An RS-232 (PC Remote) Computer Interface, labeled S
nect the 5500 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 5500 to your existing
transmitter remote control or other simple contact-closure control devices. The 5500
remote control supports user-programmable selection of up to eight optically-
isolated inputs for any one of the following parameters: recalling any factory- or
ORBAN MODEL 5500
, is provided to con-
ERIAL