Model 2650A/2651 Series
3.3 GHz/8.5 GHz Spectrum Analyzer
USER MANUAL
v 092711
Before Using the Product
· Please note the following described on the back panel.
· For safe use:
1) When abnormal sound, abnormal smell or smoke is found, stop using the
product and remove the battery and AC adapter.
2) Never handle this product with wet hands to prevent risks of electric shock, fire,
or damage.
3) Never use this product under lightning conditions to prevent risks of damage.
4) Never use any AC adapter other than specified, or it will cause damage.
Connect the power cable only to three-terminal outlet for protection from static
electricity, otherwise this product or a device under test may be damaged.
5) Never use any battery other than specified, or it may damage this product. Turn
off the power and disconnect the AC adapter before removing the battery out of
the battery compartment.
6) Be sure to charge the battery as specified in the instructions in this manual.
Moreover, an explosion, fire or smoke may occur if battery is handled
improperly.
Please read the notes for handling the battery.
i
· Set clock function
The time information is set at Japan standard time. Set the year, month, day and
time when the 2650A series is used for the first time. (Refer to “24.4 Setting
the clock” for the details.)
· Quality assurance
Warranty
If the defect by our responsibility occurs within one year after delivered, it
shall be repaired free of charge. However, this warranty does not cover such
defect that :
1) is caused by a fire or natural disasters.
2) is caused by inappropriate handling such as dropping while moving the
unit delivered.
3) is caused by handling in contradiction to usage or precautions described
in the operating manual.
4) is caused by modification or misuse.
We will not be responsible for direct or indirect damage caused by use or
defect of this product.
Refer to the end of this manual for details.
Warm-up time
Warm up the product for at least ten minutes after turning on the power in
order to stabilize the internal circuit.
Precautions for storage
1) Avoid direct sunlight or dust.
2) Store this unit in a place where temperature is between -20 °C to 60 °C,
humidity less than 60 °C/70 %RH and variations in temperature and
humidity are small.
After service
Please contact us without hesitation if you have any questions about this
product:
B&K PRECISION
22820 Savi Ranch Parkway
Yorba Linda CA, 92887
TEL. (714) 921 - 9095
FAX. (714) 921 - 6422
URL: http://www.bkprecision.com
ii
Contents
1.
OUTLINE --------------------------------------------------------------------------------------1
1.1
1.2
1.3
1.4
P
RODUCT OUTLINES
-------------------------------------------------------------------------- 1
S
TANDARD ACCESSORIES
------------------------------------------------------------------- 2
O
PTIONAL ACCESSORIES
-------------------------------------------------------------------- 2
O
VERVIEW OF ALL FOUR MODELS
---------------------------------------------------------- 3
2.
SPECIFICATIONS--------------------------------------------------------------------------4
2.1
2.2
P
ERFORMANCE
-------------------------------------------------------------------------------- 4
E
XTERNAL VIEW
------------------------------------------------------------------------------- 7
3.
4.
5.
EXPLANATION OF PANEL -------------------------------------------------------------8
EXPLANATION OF SCREEN --------------------------------------------------------- 11
FUNCTION MENU------------------------------------------------------------------------ 12
5.1
5.2
L
IST OF
F
UNCTION
M
ENU
------------------------------------------------------------------ 12
M
ENU
T
REE
---------------------------------------------------------------------------------- 13
6.
PREPARING FOR OPERATION ----------------------------------------------------- 19
6.1
6.2
6.3
6.4
S
TAND
---------------------------------------------------------------------------------------- 19
C
ONNECTION TO POWER SUPPLY
-------------------------------------------------------- 19
B
ATTERY
C
HARGE
-------------------------------------------------------------------------- 20
I
NSTALLATION OF
B
ATTERY
--------------------------------------------------------------- 20
7.
CENTER FREQUENCY <FREQ> ---------------------------------------------------- 21
7.1
7.2
7.3
7.4
S
ETTING WITH STEP KEYS
( [F1], [F2] ) ------------------------------------------------- 21
S
ETTING WITH ENCODER
------------------------------------------------------------------ 21
S
ETTING WITH NUMERIC KEY
-------------------------------------------------------------- 22
A
CCORDING TO
M
ARKER
P
OSITION
----------------------------------------------------- 23
8.
9.
FREQUENCY SPAN <SPAN> -------------------------------------------------------- 23
8.1
S
WITCHING
F
REQUENCY
B
AND
----------------------------------------------------------- 24
REFERENCE LEVEL <REFER> ----------------------------------------------------- 25
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
S
ETTING OF
R
EFERENCE
L
EVEL
--------------------------------------------------------- 25
C
HANGE OF
U
NIT OF
A
MPLITUDE
A
XIS
-------------------------------------------------- 25
S
ETTING OF
S
TEP
S
IZE OF
R
EFERENCE
L
EVEL
---------------------------------------- 25
O
N
-O
FF
S
ETTING OF
O
FFSET
------------------------------------------------------------ 25
S
ETTING OF
O
FFSET
L
EVEL
--------------------------------------------------------------- 25
S
ETTING OF
I
NPUT
I
MPEDANCE
----------------------------------------------------------- 26
R
EFERENCE
L
EVEL
S
ETTING
R
ANGE FOR
E
ACH
U
NIT
------------------------------- 26
R
ELATIONSHIP
B
ETWEEN
R
EFERENCE
L
EVEL AND
ATT/AMP (
AT D
B
M
) ---------- 27
10.
10.1
DISPLAY SCALE <SCALE> ------------------------------------------------------- 29
S
ETTING THE
F
UNCTION
K
EY
------------------------------------------------------------- 29
11.
11.1
11.2
11.3
RESOLUTION BANDWIDTH <RBW> ------------------------------------------- 29
MANUAL M
ODE
---------------------------------------------------------------------------- 29
AUTO M
ODE
-------------------------------------------------------------------------------- 30
ALL AUTO M
ODE
-------------------------------------------------------------------------- 30
iii
12.
12.1
12.2
12.3
VIDEO BANDWIDTH <VBW>------------------------------------------------------ 30
MANUAL M
ODE
---------------------------------------------------------------------------- 30
AUTO M
ODE
-------------------------------------------------------------------------------- 30
ALL AUTO M
ODE
-------------------------------------------------------------------------- 31
13.
13.1
13.2
13.3
13.4
13.5
SWEEP AXIS / DETECTION MODE <SWEEP> ------------------------------ 31
MANUAL M
ODE
---------------------------------------------------------------------------- 31
AUTO M
ODE
-------------------------------------------------------------------------------- 31
ALL AUTO M
ODE
-------------------------------------------------------------------------- 31
S
ETTING OF
D
ETECTION
M
ODE
---------------------------------------------------------- 31
S
ETTING OF
T
RIGGER
S
OURCE
---------------------------------------------------------- 32
14.
15.
16.
16.1
16.2
16.3
16.4
16.5
16.6
AUTO TUNING <AUTO TUNE> --------------------------------------------------- 32
HOLD / RUN <HOLD/RUN> -------------------------------------------------------- 32
CALCULATION FUNCTION <CALC> ------------------------------------------- 33
NORMAL M
ODE
---------------------------------------------------------------------------- 33
MAX HOLD M
ODE
------------------------------------------------------------------------- 33
MIN HOLD M
ODE
-------------------------------------------------------------------------- 33
AVERAGE M
ODE
-------------------------------------------------------------------------- 34
OVERWRITE M
ODE
---------------------------------------------------------------------- 34
SPURIOUS FREE M
ODE
(2658A
ONLY
) ---------------------------------------------- 34
17.
17.1
17.2
17.3
17.4
MARKER & PEAK SEARCH <MKR> ------------------------------------------- 35
M
OVEMENT AND
B
ASIC
F
UNCTION OF
M
ARKER
--------------------------------------- 36
N
ORMAL
P
EAK
S
EARCH
------------------------------------------------------------------- 36
Z
ONE
P
EAK
S
EARCH
----------------------------------------------------------------------- 36
C
HANGE
U
NIT OF
M
ARKER
L
EVEL
------------------------------------------------------- 37
18.
18.1
18.2
18.3
18.4
18.5
18.6
SAVE / LOAD <SAVE/LOAD> ---------------------------------------------------- 37
S
ELECTION OF
S
TORAGE
D
EVICE
-------------------------------------------------------- 38
S
AVE
F
UNCTION
---------------------------------------------------------------------------- 39
A
BOUT
F
ILE
N
AME
-------------------------------------------------------------------------- 39
L
OAD
F
UNCTION
---------------------------------------------------------------------------- 40
D
ELETE
F
UNCTION
------------------------------------------------------------------------- 41
P
RESETTING
(I
NITIALIZATION
) ------------------------------------------------------------ 41
19.
19.1
19.2
19.3
19.4
19.5
19.6
MEASURING FUNCTION <MEAS> ---------------------------------------------- 42
C
HANNEL
P
OWER
M
EASUREMNT
<CH POWER> ------------------------------------ 42
A
DJACENT
C
HANNEL
L
EAKAGE
P
OWER
M
EASUREMENT
<ACP> ------------------ 43
O
CCUPIED
B
ANDWIDTH
M
EASUREMENT
<OBW> ------------------------------------- 45
E
LECTRIC
F
IELD
S
TRENGTH
M
EASUREMENT
<E/F ANT> --------------------------- 45
M
AGNETIC
F
IELD
S
TRENGTH
M
EASUREMENT
<M/F PROBE> --------------------- 49
F
REQUENCY
C
OUNTER
<FREQ COUNT> --------------------------------------------- 51
20.
20.1
20.2
EMI TEST (2651) ---------------------------------------------------------------------- 51
A
DDITIONAL
F
UNCTION FOR
EMI T
EST
------------------------------------------------- 51
EMI T
EST
------------------------------------------------------------------------------------ 52
21.
21.1
21.2
21.3
SCREEN CONTROL <DSPL> ----------------------------------------------------- 54
S
ETTING
S
CREEN
D
ISPLAY
C
OLOR
------------------------------------------------------ 55
ON/OFF S
WITCHING OF
LCD B
ACKLIGHT
--------------------------------------------- 55
A
DJUSTING
B
RIGHTNESS OF
LCD B
ACKLIGHT
----------------------------------------- 55
iv
