8500S Rear Panel - Orban OPTIMOD-FM 8500S Operating Manual

2-4
INSTALLATION

8500S Rear Panel

6. Connect tally outputs (optional)
See the schematic on page 6-32.
The 8500S 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 8500S, 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 3.D) on page 2-24 for instructions on using the tally outputs.
7. Connect to a computer
You can connect to a computer via the 8500S's serial connector or via an
Ethernet network. (See Networking on page 2-44.)
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/8500S/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 8500S PC Remote Control Software on page 2-57 for more detail.
[See page 3-1 for a description of the 8500S'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 8500S's Model
Number.
An RS-232 (PC Remote) Computer Interface, labeled S
nect the 8500S 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 8500S to your existing
transmitter remote control or other simple contact-closure control devices. The
8500S 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-
ORBAN MODEL
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