Output Signals; Power; Alarms; Controls And Indicators - Symmetricom TSG-3800 Series User Manual

Overview of the TSG-3800 Series
Features Common to All Models

Output Signals

The TSG-3800 series 19-inch main shelf has four slots for Output modules, each
with 20 outputs. The TSG-3800 23-inch Main Shelf provides an additional four slots,
for a total of 160 outputs. Signals from similar Output modules merge on the
backplane to provide redundancy. For example, channel 1 of the first module is
merged with channel 1 of the second module. Operators can configure the
TSG-3800 to provide multiple output signal types by installing desired output
module pairs.
Up to 180 additional outputs are available in each of one or two optional 19-inch
expansion shelves. Up to 220 additional outputs are available in each of one or two
23-inch expansion shelves. Outputs are at the rear of each shelf. Output signal
specifications for each type of Output module are described in
Modules.

Power

The TSG-3800 series main shelf requires redundant –48 vDC power inputs. The
power connects to the main shelf through terminal block connectors on the rear
panel. The negative side of each power input is fused for protection. Both power
inputs are available for each module in the shelf; each module has its own power
converter and supplies power at the levels required by the individual module.

Alarms

The rear panel on the TSG-3800 series main shelf contains three sets of Form C
relay contacts for Major and Minor alarms, specifically the Local, Remote, and
Audio alarms. The user can reset the audio alarm from the front panel or by
software command. The Local and Remote alarms clear automatically when the
condition causing the alarm is corrected. Three levels of alarms can be reported:
Minor, Major, and Critical.

Controls and Indicators

The TSG-3800 series main shelf automatically monitors signal inputs, outputs, and
operating limits, and takes corrective action based on the condition of these
monitored limits and factory or user defined operational provisions. Status is
indicated on the front of the installed modules and rear panel alarm relays are set to
indicate three levels of alarms; Major, Minor, and Critical.
The operator can change system operating limits and collect measurement data
using a terminal emulation program on a personal computer, which can be
connected through the use of a EIA-232 connector on the front panel or to the
remote EIA-232 connector located on the rear of the unit. The main shelf can also
be attached to a local area network (LAN) for remote access through the PC using
an optional Ethernet 10Base-T connector.
30 TSG-3800 User's Guide
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Chapter 7, Output
12778474-002-2 Revision F – March 2004