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Operating Instructions
1705A Spectrum Monitor
2-5
70MHz
SPECTRUM MONITOR
333--3990 --01
INPUT
BESCHLEUNIGUNGSSPANNUNGKLEINERALS
20kV
DIEINDIESEMGERA TENTSTEHENDE
RONTGENSTRAHLUNGISTAUSREICHENDABGESCHIRMT
1
2
3
4
6
5
WARNING
TOAVOIDELECTRICALSHOCK,THEPOWER
CORDPROTECTIVEGROUNDINGCONDUCTOR
MUSTBECONNECTEDTOEARTHGROUND.
0.7AMAX
50/60Hz
90-250V
REPLACEFUSEONLYWITH
250V2AFTYPE
LBAND
INPUT
!
LNBPOW-
ER
ON
!
LNBPOW-
ER
OFF
+18 VDC@ 250mA
ON
Figure 2-2: 1705A rear panel controls and connectors; refer to text for descriptions
of controls identified with circled numbers
3. LNB POWER (Indicator)
LED indicator that lights when the +18 V supply is turned on and operating
correctly. Indicator will not light if the +18 V supply is shorted.
4. 70 MHz
A75Ω input bnc-type connector used for the input of the 45 -- 100 MHz rf.
5. AC FUSE
Holder for the instrument’s mains fuse.
6. AC POWER
A standard ac plug receptacle for 120 or 220 Vac power mains.
POWER