METRONEX PGS-21 Service manual

AM /FM Signal Generator Type PGS-21

• dig ita l fre qu en cy re ad out

- freq uenc y ran ge 64 kH z - 13 0 MHz

- o ut put v oltage
64 kHz - 30 MHz ran ge 1
30 M H z -1 30 MHz rang e 1 M V -0 .5 V

- AM and FM mod ulat io n

- i nt er na l m odu lat io n freq ue ncies 400 H z, 1 kH z and 4 kHz

- e xte rn al A M mod ulat io n 20 Hz - 2 0 k Hz

• e xt er na l FM m od ul at io n 2 0 Hz - 6 0 kH z

• m ax im um m od ulation dep th 90%

- m axim um d ev ia tio n 100 k Hz

- co m po site ste reo m od ula tio n c ap ab ility

• d igital freq ue nc y me as ur em en t o f ex ter nal signals

in 20 H z-1 3 0 M Hz ra nge
AP PLI CA TI ON S
T he t yp e PG S—21 Signal G ene ra to r is a labo rator y- gr ad e in stru m ent p ro vi di ng a s ou rce o f s inuso ida l vo ltage,am pli tude- or

fr eq ue nc y-m od ulate d, wi th a dj us table am pli tu de and fr eq ue nc y. T he o ut pu t vo ltag e can be ampli tu de -m od ul ated in a
fr eq uen cy rang e from 2 0 Hz to 20 kHz, or f re qu en cy -m od ulated in a fre qu en cy rang e fro m 20 Hz t o 6 0 kH z, f ro m an

ex ter na l g en er ator. Th e ou tp ut can als o be fre que nc y-m od ulate d by a c om pos ite st er eo signal.
T he in strumen t en ab les e xterna l signal freq ue nc y to be di gital ly m easu re d in the ran ge f rom 2 0 Hz to 13 0 MHz.
T he P G S- 21 G en erator is inten de d fo r testing a nd align men t of e lectro nic circ uits in the frequ en cy rang e fro m 64 kHz to

13 0 MHz.

fX V -

1 V

SP EC IFI CA TIO NS

F re qu en cy

Range
A ccura cy
Stab ili ty

sh or t-t erm

long- ter m
Vo lta ge
O utput vo lta ge / op en c ircu it/
stepwis elv ad ju sta bl e in 10 db steps,
an d co nt inuo us ly , with in each

10 dB range,

in frequ en cy ranees

64 kH z - 30 MHz

30 M H z -130 MHz
O ut pu t vo lta ge se tti ng a ccura cy
when adjus ted fo r meter FSD

64 kH z - 30 MHz

30 M H z -130 MHz

Sour ce i mp ed an ce
VSWR for vo ltages a bo ve 10 0 mV
Volta ge level cha nge wh en t un ing
from 1 MHz refe re nc e

N on lin ea r di st or tio n
AM MO DU LA TION
R at ed mod ulat io n de pth

M od ul ati on d ep th s ett ing accur acy

E xt erna l mod ula tio n fre qu enc y

range

M axi mu m mod ulatio n fre qu enc y

to c arrier f re qu en cy rela tio n

Carrier f requ en cy

64 kHz - 125 kHz

125 k H z - 25 0 kHz

25 0 k H z- 50 0 kH z

0.5 MHz - 1 MHz
1 M Hz - 130 MHz

M od ul ate d ou tp u t signal en ve lope
dist or tion
FM M ODULATION
R ate d de vi ation ran ge

Frequency

MHz 65 -1 30 32-65

F re k'HznCy 500 -1 00 0 25 0-5 00 12 5-2 50 64 -12 5

K

D ev iatio n set ting accuracy
E xterna l mod ulation frequen cy
ran ge
Maximum mo du la tio n fre qu en cy-

- carrier frequen cy r ela tion
Carrier fre qu en cy re lation
64 kH z - 125 kH z
125 kH z - 250 kH z
25 0 k H z- 50 0 kHz
0,5 MHz - 1 MHz
1 MH z - 2 MHz
2 MHz - 4 MHz
4 MHz - 8 M Hz
8 MHz - 130 MHz
M od ul ation di st or tion
M od ul ati on V oltage G en erato r
M od ula tion fre qu en cy
F re qu en cy a cc uracy

i - 7

64 kH z - 130 MHz in 11 s ubr anges
0,00591

— 0 .01 % pe r 15 min

0,1 % pe r 3 hou rs

1 AtV -1 V

1 /¿V-0,5 V

1 d B - 1 (JV
1,5 dB - 1,5 MV

50 O hms

< 1 ,5

< 1 dB
< 5%

5 - 90%
— 10% with re spe ct to F SD

20 H z -2 0 kHz

M aximu m m od ul at io n fre qu encv

3 kHz
5 kHz

10 kHz
15 kHz

20 kHz

< 6% a t 80% m od ulat io n de pt h

IS - 100/ K kHz

K =f ac to r de pe nd ent o n fre qu encj

su brang e selected

16-3 2 8-16 4-8 2-4 1-2

?-2 i- 3 ?-4 ->-5 7-6

t 9

15% o fF SD

20 Hz - 6 0 kHz

M axi mu m m od ulati on frequ en cy
2 kHz
4 kHz
7 kH z
10 kH z

14 kH z

20 kHz

30 kHz

60 kHz

< 2% w ith m ax im um de vi ation

400 H z,
± 3%

1 k Hz, 4 kH z

i-lO

Ster eo M od ul ati on
Ster eo e nc od er drive modes:

- Lf. signal fro m in ternal or ex ternal g en er ator a pp lie d to L cha nn el i np ut,

- Lf. signal fro m int erna l or e xt er na l g en er at or a pplied to R chann el inp ut ,

- Lf. signal fr om inte rna l o r e xte rnal ge ne ra tor, hav ing ide nt ica l f requ en cy ,
level and pha se, ap pl ied to b ot h L- and R cha nn el inp uts sim ultaneou sly ,

- Lf. sig nal fr om int ernal o r ex ternal ge ne rat or , having ide nti ca l freq ue nc y
an d level bu t op po site ph ase , ap plied on e to L-, th e other to R chann el
in pu t sim ult an eously,

- l .f. signa ls fro m ex tern al g en er ator, having d iff er en t fr eq uencies , applied
to L- an d R channel inp uts,

- 19 kHz p ilo t car rie r signal

Pi lot s ignal f re qu en cy
Pi lot fr eq ue nc y accurac y
Maximu m d ev iat io n by s ter eo
signal
D ev ia tio n b y pi lot signal
Channe l se pa ra tio n a t 1 k Hz
Spur ious Ef fec ts
A mplitu de mod ulat io n effec t
on fr eq ue nc y
Frequ en cy d evia tio n wit h

m od ula tio n sw itched of f

Frequ en cy d eviatio n due to
th e prese nce o f AM

A m plitu de mod ul ation with
m od ulat io n swi tch ed of f
A m plitu de m od ulation due t o
th e pr es en ce o f FN
R F ra dia tio n. A vo lta ge ind uc ed
in coil, 2 turn s 25 ,4 mm in
diam eter, spa ced by 25 ,4 mm
fr om the ge ne ra to r, meas ure d
w ith a micro vo ltm et er h aving
50 Oh m in ternal resis tan ce

w ith freq ue nc y c ou nter on

w ith freq ue nc y c ou nter of f
E xterna l G ene ra to r F requ en cy
M easur em en t
M easur em en t nng c
G at e tim e

M ea su rem en t accurac y

In pu t vo lta ge
10 0 H z-5 MHz
20 Hz - 130 MHz

S tand ar d /c lo ck / fre qu en cy

Stan dard f re qu en cy s ta bi lit y
F re qu ency dis pla y
A m bien t T em per at ur e Ra nge
Supply
Voltage
Po wer co ns umpti on
Dimens ion s

/in cL p art s pro tru ding

be yond ca bine t/

We ight

19 kHz
2 Hz

50 kHz.
5 kHz -
35 dB

< 0,005%

< 0 ,00 1% of m ini mu m

< 0 ,02 % o f min im um

< 2%

< 5 %

< 3/JV

15%

su bra nge f requency

su bra nge f requ en cy

< 1 MV

f = 20 H z -1 3 0 MHz
t =1 ms, 10 ms, 100 ms , 1 s

e /au to ra ng in g

+ . , + 1

fs t=s tand ar d fr eq ue nc y

A f

100 mV - 1 V
30 0 mV - 1 V

1 MS f

5- 10 ’ p er 2 4 hou rs

7 - segment

+5 + 20 +40 °C

22 0V - 10%; 5 0 Hz

60 VA

he ight 142 mm
w id th 446 mm
dep th 4 55 mm
15 kg

x fx

-------

st

= relat ive erro r of s tand ard

f t fr eq ue ncy gene ra tor

'g

The m an ufac turer re serve s rig hts fo r cha ng es in a bov e sp ec ificatio ns a fter d ev elo pme nt of pr ototype s.

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Z ak ła d O p ra co w ań i P rod ukc ji

Z O P A N
03 *30 1 W a r« aw a ,

ul. S ła lin gr ad zk a 29/31

MEIRÛNEX

4.

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FO RE IGN TR AD E E NT ER PR ISE “M ET RO NE X"

M YSI A 2 , 00- 950 W AR SZA WA . P OLA ND

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PH ON E: 110 -371

Ltd.