Tektronix 1705A - Manual (Page 64)

1705A Spectrum Monitor 3- 1
Section 3
Installation
The shipping carton and pads provide protection for the instrument during
transit, and should be retained in case subsequent shipment becomes necessary.
Repackaging instructions can be found in Section 6 (Maintenance) of this
manual.
Electrical Installation
This instrument is intended to operate from a single-phase power source having
one of its current-carrying conductors at or near earth-ground (the neutral
conductor). Only the line conductor is fused for over-current protection.
Systems that have both current-carrying conductors live with respect to ground
(such as phase-to-phase in multiphase systems) are not recommended as power
sources.
The 1705A operates over a frequency range of 48 to 66 Hz, at any mains voltage
between 90 Vac and 250 Vac. These newer versions of the 1705A instruments
do not require any internal changes to select their operating voltage range.
The slide switch located on the 1705A rear panel, between the input connectors,
enables/disables the +18 V supply on the L--BAND connector. See Figure 3-1.
This supply, when switched on, is intended to provide power for a Block Down
Converter (LNB), through the L--BAND INPUT connector.
Packaging
Power Source
Mains Frequency and
Voltage Ranges
+18 Volts For Block Down
Converter