Optoelectronics M1 Owner's Manual page 3

RF Signal St rength Barglllph
'.. , 3oIl ~ , "- _
!IO Oi'+n~._
Frequ-.q
lei
Seg menl Full Sc.Ie
27 MHz
30J
microvolts 10 millivolts
150 MHz 400 microvolts 12 millivolts
450 MHz 1 millivolt
20
milhvolts
850 MHz 1 millivolt 20 millivolts
FEATURES
CONTINUED
TIlE MICROPROCESSOR- OElOADVANTAGE
The internal microprocessor digitally
filters the
RFsignalfrequencies and reduces
spuriouscounting.
AU
of this
is
done \'o;thout relyingon the signalstrengthto
exceedsome
arbitrary
level.
ensuringreliable performance
in
today's dense signal
environments .
Proprietary software
monitors the incoming
RF for stable
coheent
signals , and only when
these
conditionsare satisfied will the cocnt be presentedto
tbe
uset.
Internal memoryallows
the ModelMl
to
storethe last threefiltered frequencies for
laterexamination . This feature allows totally unattended operation- the ModelMl
can be turned on and willsilentlyrecordthe frequency eX any nearbyradiotraffic .
At any
time
later. the ModelMl's
memories can be
recalled to check the results
of
an
extended
monitoring period .
DIGITALCOMMUNICATIONS PORT
The Optoelectronks ' ModelMJ hand held frequency counter
is
equipped w;th a
TIt asynchronous serial inttrlace which allows
the units to
be connected
to
a
pesoeal computer for
the purJOSe
of reeding frequency information. The three-
wire
interfaceis accessible via a l /&h inch stereophone jack. a nd consists of
Receive Data
ITJP),
Transmit Data <RING), and S;gnaJ Ground (SHIEW). An
external RS-232C interface converter(MooelCXl2)
is
required
to
convert the TIL
signal levels to RS-232C levels rompatible
with
most
personal
computers.
An
accessory RS232C converter , ModelCXI2,. permitsinterfacing
the
Model Ml
directly to the serial
port
ci a PC The CXl2 comes with a PC compatible data
klggingprogram. Checkwith the factoryforprice
and
availability.
SPEOFICATIONS
Ampiit . .:
, .. _Ohm
so Ohm
Impedance :
1Meg Ohm, 30 pF SOOhmVSVv'R<2:1
R~ :
10Hz .roMHz 1OMHz-2
40Hz
(28GHz typ )
Sensitivity: <l()nV 10Hz - 10MHz,
<SmVO 10MHz
<2liTlV 10M Hz •
50MHz
<:JX)uVO 1SOMHz
<3mV 0 800MHz
<1()nVO 1GHz
<50 mV
0
240Hz
.. ..imum 1npu1: 100 V
RMS
15dBm , SOmilM-atts
Frequency Display Resolution
L685f slgndican t dtgit displayed (LSD)
as
B
fln:tx::Jn
of Gate
rme
and Range
-
....
GaI.TIme
LSD
Sample [qptay
200MHz
100rricroseconds
101% 2500ClMHz
00 ',"""", 1KHz
25O.0C0MHz
0' '"""'"
100H z 250 .(0) OMHz
1
'"""'"
10Hz
250 .(0)
00MHz
1
'"""'"
1Hz
250 00l 000MHz
10
""""'"
1Hz 250 ,(0)
()(X)
OMHz
24GHz
0064,"""",
10KHz
240000MHz
064 '"""'"
1KHz 2400,COOMHz
64
eeccee
100Hz 2400 lXlO OMHz
••
secceoe 10H z 2400,lXlOOClMHz
Tme~~b :
13 milisecx:nds ,all
Ranges and Gale
trees
Diep.y:
10
Digli (120
segTlIlI'lt }
LiQJid
CrystalDisplay,
DecinaI
atMHzpostirn
Size : 4,9' hir;tl x 2.8' wide x 1.4'
Deep
CAbinet: Extruded aunrun,
black
pant
filish
Power: 9VOC,250MA
usng
rrodeI
/>COO
wall plug adapter.
s-;.
Hours operalicn frem i1lemal4 cell NiCadPack. 16 hoI..f recharge lrem AC
adapter charger. 138V aJlardwe socrce
mJSl
be redJced to
<
lOV10prev91t
overcharge and overheetng a !he
M;xjeI
M1.
0pI....
TCX03O :
Precism
+1- ,2ppm 2).4O'C
l ~ e
$Iabilitytlm9 base Facby
i1stalled
CX12: RS232a:nverter, p«mIs i1tertacilg !he
Model
M1 directlyIDee serial
port
a aPe
The
CX12 canes
WIIh!he 0pk>L0g data IoggIlg
progr<m