Fre Quency Stabi Lity Test; Outpu T Level Accu R Acy Tests - Wavetek 3001 Instruction Manual

4,4 FRE QUENCY STABI LITY TEST
SPE CI F ICATIO N
All modes (C
W
, AM and FM I --' 0 .2 ρρπιΛιου r
(50 Λ Ηι per 10 min when FRED VERN I ER is not in CA LJ
METHOD
E
Q
U
I
PMEN
T
PROC E D URE
4 .5
OUTPU T LEVEL ACCU R ACY TESTS
M
ETHOD
4- 6
The freq uency stability is ιτιeαsιιιcιΙ with α
f
requency co unter at
t
he
indicated ti me inte rvals
after α
2- h ou r-mi n im um warm-up.
1 . Set the instrument co n trols as follows:
FRE Q VERN IER CA L
F re qu ency selector 520.000 MHz
M
ODUL ATIO N MODE CW
M ODUL ATIO N FREQ Ν ;Α
M
ODUL ATIO N FΜ f ΑΠλ N/A
OU TPU T VE RN I ER Full
r
w
OU TPU T Step Ατ t ρηυατπ r (10 dB m
2. Connect th e 50 o
h
m nput of the frequency counter to the RE OUT
co
n
nector,
3. Allow
t
h e instrument 1 ο warm up for two
h
ours mini mu m.
R
ecor d
t
he
f ιΡμιιπιιιγ ειιιιπιρτ ~" α d ίη gs to nine
p
laces at 15-minute intervals for α one-
how ρeιιυ
d
. The
d λ f ιπνιιειτ ΙιιΑωι"en the Ιιια )( ίιτιιι 11 ι αη(j mπιίmυm leading,
in the
o
ne-h ou r period
s
hould not exceed 104 Hz .
R
ecor d
t
he
d
ifference
h
erwnen the maximum an d m i n imum readings in Hz an li ne 7 of th e PTR .
4 . Set th e FRFO VERN I ER to 0 kH z, t he
M
OD UL ATIO N M OD E to
FM x1, the
M
OD ULATIO N FRED to DC, and
t
he
M
OD ULATIO N FM/AM
slider to 10 kHz
5. Afte r α o ne- m in ute in te rval, reco rd
t he fre qu ency co un te r rea d i ngs [ο
nine p laces at five-m ίηιιτe intervals for α ten-minute
p
erio d . The
d
iffe rence
b
etween the
m a*im u n ι and minimum read i ngs in
t
he ten-m i nu te period
s
hould not exceed 500 Hz .
R
ecor d
t
he
d
iffe rence
b
etween the
m
axim um
and mi nim um freq u e ncy r ead ings in Hz on li ne 8 of the P TR.
SP ECI F ICATIO N
Power
L evel ι -13 to -137
d
Βm (1 VRMS To Π Λ3 μV R MSI
Α1[eιιυmοι
R
αιιgρ-. CυητίιιιιιιιιτΙγ adjustable in 10 d B ste p s and an 11
d
B
VERN I ER . Output level is in dicated on α front-panel ME TER cali brated
in dBm and volts RMS
Total
L
υvel Accuracy :
11 .25 d8 1+13 το -7
d 8m), =1 .95 dB Ι-7 to -77
dBm), "275 dB 1-77 to -137 dβm~ .
Accuracy Br ea kd own : Flatness ; ±0 .75 dB (+13 to -7 dOm), Output
ME T ER ; _
-
0.5 d8, Ste p Attenuator ; " _0 .5 dB τ 0 70 dB (±0.2 dB calibration
erro
r
),
_^1 .0 dB to 130 dB Ι±0 .5
d
B cali bration error)_
The -1 .25 dB level accuracy
b
etween +13 and .7 dBm consists of t he sυπι
of t h e output ME TER er ror tt0.5 d
B) and the flatness 1=0 .75 dB I Both
er ror s are measure d with α p
ower mete r.