Philips PM5324, Instruction Manual

Page: 14 / 60

2.2. Operation
2.2.1. SWITCHING ON
- Connect the instrument to a mains socket with earthing contacts.
- Switch on by means of switch POW E R; the sca le illumination lights up and a wh ite field in the button·cap
shows that the ma ins switch is on.
2.2.2. ADJUSTING THE FREQUENCY
- Select t he required frequency range with one of the range buttons MHz; the correspond ing range·sca le is
indicated by a L ED at the left side of the scale window.
- Adjust to nom inal frequency with potentiometer FR EQU ENCY.
2.2.3. ADJUSTI NG THE MODE
The mode is selected by depressing one of the 6 buttons in the left row of buttons.
If no button h as been pressed the generator suppl ies an unmodu lated HF·s ignal with the adjusted frequency
and amplitude.
Buttons CA L., AM/EXT., AM/ 1 kHz, F M/ EXT. and F M/ 1 kHz unlock each other automatically, thus only
one button can be depressed at a time.
Button WOB. may be unlocked by pressing the button a second time, independent l y of the other buttons.
The mode· buttons may be combined with the frequency·range buttons according the table given below.
Range button Mode button
(selectable)
(MHz)
CA L AM F M
WOB
. 1
_
.3
X X
.3_ 1 X X
1 3 X X
3
_
10 X X
10
_
30 X
X
30
_
80
X X
7 5 _ 1 10 X X X X
.4_ . 5 X X X
10.3_ 1 1.1 X X X X
2.2.4. APPLICATION
2.2.4.1. Unmodulated H F·signal generator
- Depress the requ ired range button MHz.
extra
WOB+AM
X
X
X
- The selected range scale is indicated by a L ED.
- Set the pointer at the required frequency by means
of potent iometer FR EQU ENCY.
Not marked frequency values shou ld be interpolated between two marks.
- If necessary, calibrate the frequency at the nearest calibration·mark accord ing to sub·para 2.2.4. 5.
- Unlock the mode·buttons ( left row of buttons).
- Apply the H F's ignal, ava i l able at BNC connector HF OUT , across
a
cable to the object to be measured (see
accessories, chapter 1.3 . ) .
- Adjust the required output voltage with potentiometer HF A MP LITUDE.
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