Installation
3-2 1705A Spectrum Monitor
LBAND
INPUT
LNBPOWER
ON
LNBPOWER
OFF
+18VDC @ 250 mA
ON
Figure3 -1: L-BAND INPUT connector and controls
Under extremeLNB load conditions it is possible for the +18 V supply to load
the main 1705A power supply enough to change the low line regulation. Under
these circumstancesthe power supply may go out of regulation when mains
voltage falls below 100V.
The 1705A provides an internal jumpersetting to enable or disablethe graticule
lights. See Table 3--1.
Table3- 1: Internal Jumper Selection
Jumper Name Position Function
A3A1 J100 Light Enable 1--- 2
2--- 3
Graticulelights enabled
(factory set)
Graticulelights disabled
Mechanical Installation
NOTE. Cabinet drawings areprovided for installation information only, and are
not to scale. All dimensions are in inches.

Operating Options

Cabinet Options