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Installation
a. This installation procedure must be followed for compliance
with FCC Part 15, Subpart J, Class A requirements.
NOTE
b. For Canadian installations only, a special cable is required
for the network port connection. Use GDC cable P/N
022H020-XXX (RJ48C plug to 15-pin female) to connect the
network port to the T1 line.
Primary Power Connection
After the DeskTop T1 DSU has been installed and the above
connections have been made, connect primary power to the system.
The DSU is provided with an external power transformer that plugs
into a three-prong electrical outlet.
Connect the power cord from the transformer to the back panel of the
DSU and insert the plug-in transformer into a polarized outlet that
provides the required ac power.
Use only GDC Part No. 700-053-002 plug-in transformer
to power the DSU. This unit is a Class 2 power source, rated
19 Vac, 0.6A, at 60 Hz.
The outlet that provides ac power should not be under switch control.
The DeskTop T1 DSU should be powered by the same ac source as the
customer equipment connected to it. Use of the same ac source will
prevent large circulating currents caused by differences in ground
potential. If you cannot be sure that the customer equipment is
powered by the same ac source as the DSU, verify that the potential
difference between the grounding circuits of their respective outlets is
less than 0.25 V rms.
Terminal Connection
If you are using a VT100-compatible terminal for configuration and
control of the DeskTop T1 DSU, make the connection at the back
panel Console port identified in Figure 2-2. The port is RS-561
compatible. Refer to Table 1-1 for the appropriate interface cable.
2-15
GDC 048R154-000
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