Advertisement
Model 8902A
Operation
3-4. TURN-ON PROCEDURE
Bejorc
llie
Meusiiring Rt.c.c'iver is switchcd on, all protectivc earth tcrminals,
extension cords, aiito-transformers, and deviccs connected
lo
it
shoidd
b t 2
conncclcd to a profcctivc> tjarlh socka.
A
ny inttwiiplion
of
[he protective earrh
groiindiirg will cairse
u
polential shock hazard thar coirld resirlt in pcrsonal
injirry.
For corrtiniicd protection against fire hazard, replace the line
jiise
with
a
250V normal blow fiisc of the same rating. Do
not irse repaired jirses or
shorl-citwircd jirseholdm.
Btforc. rhc Mcasirring Rcwivcr is switched
on,
il mirst be set to the vollage
oJ'
rhc p o w r soiircc: or damuyc
l o
the instrirment may r~wilt. RcIfL'r to paragraph
2-3, P0wt.r Reqiiirements.
Do not
apply greater fhan 40V (ac
+
dc) to the RF INPUT connector
or
damage
lo
the instriiment may resiill.
The Measuring Receiver has a standby state and an on state. Whenever the power cable is plugged in,
an internal power supply is activated. In instruments supplied with the high-stability reference (Option
002) the supply energizes the internal reference oven. If the Measuring Receiver is already plugged
in, set the POWER switch to ON. If the power cable is not plugged in, follow these instructions:
1. Check that the line voltage setting matches the power source. (See Figure 2-1, Line Voltage and
Fiise Sckction
.)
2. Check that the fuse rating is appropriate for the line votage used. (See Figure 2-1,
Linc Voltage
and Firse Selection.) Fuse ratings are provided in the paragraph Operator's Muintcwance in this
section.
3. Plug in the power cable.
4.
Set the POWER switch to ON.
NOTE
When the POWER swifch is set to ON, all jront-panel indicators lighl jor
approximately
10
seconds ufrer which the instriiment
is ready
to he operatcd
3-5. INSTRUMENT FEATURES
Front-panel controls, indicators, and connectors are illustrated and referenced to text in Figure
3-1.
The text for this figure describes the various functions of the Measuring Receiver. At the end of each
description is
a
reference to a detailed operating instruction that contains more details on this topic.
Rear-panel features are shown and referenced to text in Figure 3-2. The text for this figure provides
a quick reference for rear-panel signal levels and frequencies and also includes the impedances at
the rear-panel connections.
The information in parenthesis at the end of each feature summary provides the title of the Dctailcd
Operating Znstriidions relevant to the feature.
3-4
rcv.
1
6 JWhrEY6
Advertisement
Chapters
