BK Precision 2651, 2650A User Manual
Model 2650A/2651 Series
3.3 GHz/8.5 GHz Spectrum Analyzer
USER MANUAL
v 03042009
Before Using the Product
· Please note the following describe d on the back panel.
· For safe use :
1) When a bnormal s ound, abnormal s mell or smoke is found, stop us ing 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 us e any AC a dapter ot her t han s pecified, or it w ill caus e da mage.
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.
Precaution s for st o r age
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 c ontact us w ithout he sitation i f you ha ve a ny que stions a bout t his
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
TANDARD ACCESSORIES ------------------------------------------------------------------- 2
S
PTIONAL ACCESSORIES -------------------------------------------------------------------- 2
O
VERVIEW OF ALL FOUR MODELS ---------------------------------------------------------- 3
O
2. SPECIFICATIONS -------------------------------------------------------------------------- 4
2.1
2.2
P
ERFORMANCE -------------------------------------------------------------------------------- 4
XTERNAL VIEW ------------------------------------------------------------------------------- 7
E
3. EXPLANATION OF PANEL ------------------------------------------------------------- 8
4. EXPLANATION OF SCREEN --------------------------------------------------------- 11
5. FUNCTION MENU ------------------------------------------------------------------------ 12
5.1
5.2
L
IST OF FUNCTION MENU ------------------------------------------------------------------ 12
ENU TREE ---------------------------------------------------------------------------------- 13
M
6. PREPARING FOR OPERATION ----------------------------------------------------- 19
6.1
6.2
6.3
6.4
S
TAND ---------------------------------------------------------------------------------------- 19
ONNECTION TO POWER SUPPLY -------------------------------------------------------- 19
C
ATTERY CHARGE -------------------------------------------------------------------------- 20
B
NSTALLATION OF BATTERY --------------------------------------------------------------- 20
I
7. CENTER FREQUENCY <FREQ> ---------------------------------------------------- 21
7.1
7.2
7.3
7.4
S
ETTING WITH STEP KEYS ( [F1], [F2] ) ------------------------------------------------- 21
ETTING WITH ENCODER ------------------------------------------------------------------ 21
S
ETTING WITH NUMERIC KEY -------------------------------------------------------------- 22
S
CCORDING TO MARKER POSITION ----------------------------------------------------- 23
A
8. FREQUENCY SPAN <SPAN> -------------------------------------------------------- 23
8.1
S
WITCHING FREQUENCY BAND ----------------------------------------------------------- 24
9. REFERENCE LEVEL <REFER> ----------------------------------------------------- 25
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
S
ETTING OF REFERENCE LEVEL --------------------------------------------------------- 25
HANGE OF UNIT OF AMPLITUDE AXIS -------------------------------------------------- 25
C
ETTING OF STEP SIZE OF REFERENCE LEVEL ---------------------------------------- 25
S
N-OFF SETTING OF OFFSET ------------------------------------------------------------ 25
O
ETTING OF OFFSET LEVEL --------------------------------------------------------------- 25
S
ETTING OF INPUT IMPEDANCE ----------------------------------------------------------- 26
S
EFERENCE LEVEL SETTING RANGE FOR EACH UNIT ------------------------------- 26
R
ELATIONSHIP BETWEEN REFERENCE LEVEL AND ATT/AMP (AT DBM) ---------- 27
R
10. DISPLAY SCALE <SCALE> ------------------------------------------------------- 28
10.1 S
ETTING THE FUNCTION KEY ------------------------------------------------------------- 28
11. RESOLUTION BANDWIDTH <RBW> ------------------------------------------- 28
11.1 MANUAL
11.2 AUTO
11.3 ALL
MODE ---------------------------------------------------------------------------- 28
MODE -------------------------------------------------------------------------------- 29
AUTO MODE -------------------------------------------------------------------------- 29
iii
12. VIDEO BANDWIDTH <VBW> ------------------------------------------------------ 29
12.1 MANUAL
12.2 AUTO
12.3 ALL
MODE ---------------------------------------------------------------------------- 29
MODE -------------------------------------------------------------------------------- 29
AUTO MODE -------------------------------------------------------------------------- 30
13. SWEEP AXIS / DETECTION MODE <SWEEP> ------------------------------ 30
13.1 MANUAL
13.2 AUTO
13.3 ALL
13.4 S
13.5 S
ETTING OF DETECTION MODE ---------------------------------------------------------- 30
ETTING OF TRIGGER SOURCE ---------------------------------------------------------- 31
MODE ---------------------------------------------------------------------------- 30
MODE -------------------------------------------------------------------------------- 30
AUTO MODE -------------------------------------------------------------------------- 30
14. AUTO TUNING <AUTO TUNE> --------------------------------------------------- 31
15. HOLD / RUN <HOLD/RUN> -------------------------------------------------------- 31
16. CALCULATION FUNCTION <CALC> ------------------------------------------- 32
16.1 NORMAL
16.2 MAX
16.3 MIN
16.4 AVERAGE
16.5 OVERWRITE
16.6 SPURIOUS
MODE ---------------------------------------------------------------------------- 32
HOLD MODE ------------------------------------------------------------------------- 32
HOLD MODE -------------------------------------------------------------------------- 32
MODE -------------------------------------------------------------------------- 33
MODE ---------------------------------------------------------------------- 33
FREE MODE (2658A ONLY) ---------------------------------------------- 33
17. MARKER & PEAK SEARCH <MKR> ------------------------------------------- 34
17.1 M
17.2 N
17.3 Z
17.4 C
OVEMENT AND BASIC FUNCTION OF MARKER --------------------------------------- 35
ORMAL PEAK SEARCH ------------------------------------------------------------------- 35
ONE PEAK SEARCH ----------------------------------------------------------------------- 35
HANGE UNIT OF MARKER LEVEL ------------------------------------------------------- 36
18. SAVE / LOAD <SAVE/LOAD> ---------------------------------------------------- 36
18.1 S
18.2 S
18.3 A
18.4 L
18.5 D
18.6 P
ELECTION OF STORAGE DEVICE -------------------------------------------------------- 37
AVE FUNCTION ---------------------------------------------------------------------------- 38
BOUT FILE NAME -------------------------------------------------------------------------- 38
OAD FUNCTION ---------------------------------------------------------------------------- 39
ELETE FUNCTION ------------------------------------------------------------------------- 40
RESETTING (INITIALIZATION) ------------------------------------------------------------ 40
19. MEASURING FUNCTION <MEAS> ---------------------------------------------- 41
19.1 C
19.2 A
19.3 O
19.4 E
19.5 M
19.6 F
HANNEL POWER MEASUREMNT <CH POWER> ------------------------------------ 41
DJACENT CHANNEL LEAKAGE POWER MEASUREMENT <ACP> ------------------ 42
CCUPIED BANDWIDTH MEASUREMENT <OBW> ------------------------------------- 44
LECTRIC FIELD STRENGTH MEASUREMENT <E/F ANT> --------------------------- 44
AGNETIC FIELD STRENGTH MEASUREMENT <M/F PROBE> --------------------- 48
REQUENCY COUNTER <FREQ COUNT> --------------------------------------------- 50
20. EMI TEST (2651) ---------------------------------------------------------------------- 50
20.1 A
20.2 EMI
DDITIONAL FUNCTION FOR EMI TEST ------------------------------------------------- 50
TEST ------------------------------------------------------------------------------------ 51
21. SCREEN CONTROL <DSPL> ----------------------------------------------------- 53
21.1 S
21.2 ON/OFF
21.3 A
ETTING SCREEN DISPLAY COLOR ------------------------------------------------------ 54
SWITCHING OF LCD BACKLIGHT --------------------------------------------- 54
DJUSTING BRIGHTNESS OF LCD BACKLIGHT ----------------------------------------- 54
iv
22. TRACKING GENERATOR MODE (2652A) ------------------------------------ 54
22.1 S
22.2 D
22.3 ON/OFF
22.4 N
PECIFICATION OF T.G. FUNCTION ------------------------------------------------------ 54
ESCRIPTION OF I/O CONNECTOR------------------------------------------------------- 55
SWITCHING OF T.G. FUNCTION ----------------------------------------------- 55
ORMALIZING FUNCTION ------------------------------------------------------------------ 56
23. STORAGE/PRINT SCREEN IMAGE <COPY> -------------------------------- 57
23.1 S
23.2 P
23.3 S
23.4 T
23.5 USB
23.6 USB
ELECTION OF IMAGE AREA -------------------------------------------------------------- 57
RINT ON PRINTER ------------------------------------------------------------------------- 57
TORAGE INTO USB MEMORY ----------------------------------------------------------- 57
RANSFERRING INTERNAL DATA TO USB MEMORY IN LUMP SUM ----------------- 58
PRINTER (OPTION) ------------------------------------------------------------------- 58
MEMORY ------------------------------------------------------------------------------- 59
24. UTILITY FUNCTION <UTIL> ------------------------------------------------------- 60
24.1 L
24.2 M
24.3 B
24.4 S
ABEL FUNCTION --------------------------------------------------------------------------- 60
ENU OFF ----------------------------------------------------------------------------------- 61
UZZER SETTING --------------------------------------------------------------------------- 61
ETTING THE CLOCK ----------------------------------------------------------------------- 61
25. USB DEVICE FUNCTION ----------------------------------------------------------- 63
25.1 O
25.2 H
25.3 I
25.4 S
25.5 E
25.6 I
25.7 T
25.8 W
UTLINE -------------------------------------------------------------------------------------- 63
OW TO CONNECT ------------------------------------------------------------------------- 63
NSTALLATION OF DRIVER ----------------------------------------------------------------- 63
AMPLE PROGRAM ------------------------------------------------------------------------- 63
XPLANATION OF COMMAND -------------------------------------------------------------- 64
NPUT OF FREQUENCY --------------------------------------------------------------------- 73
RANSFER OF SPECTRUM DATA --------------------------------------------------------- 73
RITING OF ORIGINAL COMPENSATION DATA ----------------------------------------- 74
26. OPTION ---------------------------------------------------------------------------------- 76
27. BASIC PERFORMANCE TEST (2650A/2651/2652A/2658A) ------------ 77
27.1 F
27.2 A
27.3 D
27.4 D
27.5 L
REQUENCY CHARACTERISTICS --------------------------------------------------------- 77
CCURACY OF REFERENCE LEVEL ------------------------------------------------------ 78
ISPLAY ACCURACY OF CENTER FREQUENCY ---------------------------------------- 78
ISPLAY ACCURACY OF FREQUENCY SPAN -------------------------------------------- 79
INEARITY OF AMPLITUDE AXIS ---------------------------------------------------------- 79
v
1. Outline
1.1 Product outlines
The 2650A series are authentic s pectrum an alyzers in a compact a nd l ightweight f orm f actor pr oviding
performance and functions comparable to large-size bench type instruments.
The features are as follows.
1) Compact and lightweight 1.8 kg.
The dimensions are 162(W)×71(H)×265(D) mm, and the weight is only 1.8 kg including the battery, making the
instrument very convenient for field use.
2) Large color TFT display
5.7 inches, 640×480 color LCD
3) Four hours battery operation
The included Lithium-ion battery, when fully charged, can provide power for up to four hours of operation with the
backlight turned off. And about 3 ½ hours with the backlight set to the minimum level.
4) USB host adapter
USB host port can be used with removable storage USB flash drives. The screen image is stored as BMP format, and
the spectrum and the setting parameters are stored as CSV format. The port conforms to USB 1.1 standards and is
backwards compatible with USB 2.0 devices.
5) USB device for PC connectivity
USB interface with transfer rates up to 12 Mbps maximum (conform to USB 1.1 standards).
6) Accurate frequency measurement by PLL synthesizer
The center frequency is accurately set by PLL (Phase Locked Loop) synthesizer. Moreover, the frequency counter
(factory option) enables more accurate measurements of the frequency of a signal.
7) Average noise level -127 dBm
The low average noise level of -127 dBm @ 1 GHz provides a wide dynamic range.
8) 100 dB display dynamic range
Wide dynamic range display with a display scale of 100 dB/10div (at 10 dB/div) in the amplitude axis.
9) Easy operation with AUTO mode
● Auto range operation: RBW, VBW and sweep time are automatically selected based on the frequency span.
● Auto tuning operation: The center frequency is adjusted to the maximum level within full span, and the optimum
RBW, VBW and sweep time are chosen.
1
10) Abundant functions
● Measuring functions : Channel power, Adjacent channel power, Occupied bandwidth, Electric field
strength, Magnetic field strength and Frequency measurement.
● Calculation functions : Max hold, Min hold, Averaging, Over write
● Marker measurement and peak search function
● Save/Load function
● Hard copy with printer
11) PC Software
The included PC software controls all four models of the 2650A/2651 series via PC. The software emulates the front panel keys
and supports transfer of 1001 point trace data from the analyzer to the PC. Screen images can be stored in BMP format and the
spectrum data in CSV format (stores frequency and level).
12) Options
There are many options available, such as dipole antennas, magnetic field probes and USB printer
1.2 Standard accessories
1. AC adaptor MA400
2. Carrying case LC2650A
3. Accessory pouch
4. User manual
5. PC software and USB cable
6. Lithium Ion battery MB400
1.3 Optional accessories
1. Dipole antennas M401, M402, M403, M404, M405, M406
2. Magnetic field probe PR 26M with a dedicated double shielded coaxial cable
3. Printer PT2650A with AC adaptor, 4pcs of AA batteries, one roll paper
4. Roll paper PX2650A for PT2650A printer (with 10 rolls)
2
1.4 Overview of all four models
Model
Contents
50 kHz to 3.3 GHz
50 kHz to 8.5 GHz
station
50 kHz to 3.3 GHz
return loss measurement
50 kHz to 3.3 GHz
2650A
2658A
2652A
2651
Applications: Cellular phone, 2.4 GHz wireless LAN, 2.5 GHz WiMAX, RF-ID,
Broadcasting
Covering most of the wireless communication frequency spectrum
Applications: 5 GHz wireless LAN, 3.5/5.8 GHz WiMAX, Maintenance of wireless base
With 5 MHz to 3.3 GHz tracking generator
Applications: Frequency characteristics measurement of electronic component/circuit and
For EMI test
Applications: Radiated and conducted emission measurement
3
2. Specifications
Frequency range
50 kHz to 3.3 GHz
50 kHz to 8.5 GHz
Frequency
range
Frequency
band
Harmonic
order
50 k to 3.5
Base band
1
3.3 G to 6.3
GHz
Band 1-
1
6.1 G to 8.5
GHz
Band 1+
1
Center frequency
Setting
20 kHz
Accuracy
within ± (30+20T) kHz±1 dot
within ±(30+20T) kHz ± 1 dot
RBW
within ±4 kHz @ 3 kHz, 10 kHz, 30 kHz
Frequency span
Setting range
0 Hz (zero span),
0 Hz (zero span),
Accuracy
within ±3% ±1dot
Display resolution
501dots on LCD screen, 1001dots readout via PC
Resolution bandwidth
3 dB bandwidth (6 dB for 2651 @ 9 kHz, 120 kHz)
Setting range
3 kHz to 3 MHz (1-3 step) and AUTO
Accuracy
±20%
Selectivity
1:12 (typical, 3 dB : 60 dB)
Video bandwidth
100 Hz to 1 MHz (1-3 step) and AUTO
SSB phase noise
-90 dBc/Hz (typical)
Spurious response
less than -60 dBc
Harmonics
2.1 Performance
Frequency section
2650A, 2652A, 2651 2658A
resolution
frequency
error
―――
Allows rotary encoder, numeric key and function key
@frequency span: 200 kHz to 10 MHz,
RBW 3 kHz, 23±5°C
within ± (60+300T) kHz±1dot
@frequency span: 20 MHz to 3.3 GHz,
RBW 100 kHz、23±5°C
T: sweep time (s)
within 20% of RBW @ RBW: 100 kHz, 300 kHz
within 10% of RBW @ RBW: 1 MHz, 3 MHz
200 kHz to 2 GHz (1-2-5 step) and
3.3 GHz (full span)
@ sweep time of 0.3s, 23±5 °C
GHz
@frequency span: 200 kHz to 10 MHz,
RBW 3 kHz, 23±5°C
within ± (60＋300T) kHz±1dot
@frequency span: 20 MHz to 8.5 GHz,
RBW 100 kHz, 23±5°C
T: sweep time (s)
200 kHz to 5 GHz (1-2-5 step) and
8.5 GHz (full span)
# of points per trace
(501 dots are visible on the display, 1001 dots of trace data are captured internally and can be
transferred to a PC via USB device interface.)
(2651: 3 kHz, 9 kHz, 30 kHz, 120 kHz, 300 kHz, 1 MHz, 3 MHz)
@100 kHz offset, RBW : 3 kHz, VBW : 100 Hz, sweep time: 1 s
less than -40 dBc @ ≧100 MHz
4
2650A, 2652A, 2651
2658A
Reference level
Setting range
+10 to -60 dBm (1dB step)
Accuracy
within ± 0.8 dB ± 1 dot
@ center frequency : 100 MHz, RBW : 3 MHz, VBW : 1 MHz, REF : -15 dBm, 23±5 °C
Unit
dBm, dBV, dBmV, dBμV, dBμV/m, dBμA/m
Average noise level
-127 dBm (typical) @ CF : 1 GHz, RBW : 3 kHz, VBW : 100 Hz, Ref. level < - 40dBm ( preamp
automatically ON)
Frequency
within ±2.0 dB ±1dot @50 kHz to 100 MHz
within ±2.0 dB ±1dot @50 kHz to 100 MHz
Input impedance
50 Ω
Input VSWR
less than 2.0
Input attenuator
Operating
0 to 25 dB (1 dB step), coupled with reference level
Switching
±0.6 dB @100 MHz
RBW switching error
±0.6 dB
Display resolution
(vertical)
381 dots/10div
Scale
10 dB/div, 5 dB/div, 2 dB/div
Accuracy
±(0.2 dB+1dot)/2 dB ±(0.4 dB+1dot)/5 dB
±(0.8 dB+1dot)/10 dB ±(1.8 dB+1dot)/83 dB
+27 dBm (CW average power), 25 VDC
2650A, 2652A, 2651
2658A
Sweep time
Setting range
10 ms to 30 s and AUTO
10 ms to 30 s and AUTO
Accuracy
Within ±0.1 %±1dot
@frequency span : 0 to 2GHz
Within ±0.1 %±1dot
@frequency span : 0 to 5GHz
within ±1.5 %±1dot @ full span
within ±2.5 %±1dot @ full span
Trigger
Trigger mode
AUTO (Available only for zero span)
Trigger source
Internal and External
Amplitude section
(dBμV/m and dBμA/m are used for measurement functions)
characteristics
range
error
Display
scale
Input damage level
within ±1.0 dB ±1dot @ 100 MHz to 3.3 GHz
within ±1.0 dB ±1dot @100 MHz to 8.5 GHz
Sweep section
@frequency span : 0 to 2 GHz
30 ms to 30 s and AUTO
@frequency span : full span
1-3 step
5
@frequency span : 0 to 2 GHz
30 ms to 30 s and AUTO
@frequency span : 5 GHz, full span
1-3 step
External trigger
Input voltage range
Detection mode
Positive peak, Negative peak, Sample
2650A, 2652A, 2658A, 2651 common
Marker measurement
DELTA：displays frequency difference and level difference between two markers.
Peak search function
Searches for peak level with all of 10 div (NORM mode) or within ZONE specified
NORM mode.
Calculation function
NORM, MAX HOLD, MIN HOLD, AVERAGE, OVER WRITE
Measuring function
Channel power, Adjacent channel power, Occupied bandwidth, Electric field strength
Auto tuning
When pressing AUTO TUNE key, the spectrum of maximum level within full span is
Save
Saves 200 spectrums and 200 setting parameters
Load
Loads one spectrum and one setting parameter
2650A, 2652A, 2658A, 2651 common
Input connector
N(J) connector
USB Communication
Protocol
USB version 1.1 (will also work with USB 2.0 devices)
Device Connector
B plug
Transfer rate
12 Mbps
Hard copy
USB printer (option) connected to A plug (host) enables hard copy of screen.
host connector
A plug
Display
Display
5.7 inches and color LCD
Backlight
LED backlight
Number of dots
640(H) x 480(V) dots
Power supply
Dedicated
Input : 100 to 240 VAC
Lithium-ion battery
MB400 : 7.4 V/5000 mAh Li-Ion battery
Frequency range
Input coupling
Trigger level
Input RC
Input damage level
Input connector
1 to 10 Vp-p
DC to 5 MHz
DC coupling
approx. 0.56 V(fix)
approx. 10 kΩ / less than 15 pF
±50 V(DC+AC peak)
SMA(J)
( QP and AV for model 2651 only.)
Function
NORM：displays frequency (8digits max) and level (4digits max) at marker point.
Save/
Load
(ZONE mode) and displays frequency and level at peak level, and moreover NEXT peak at
Number of sweeps is 2 to 1024 (power of 2 ) and infinite.
(needs optional dipole antenna), Magnetic field strength (needs optional magnetic field
probe) and Frequency counter
adjusted to center, and reference level, RBW, VBW and sweep time are set to optimum
parameters.
General
AC adaptor
Charge function
Remainder indication
Output : 9 VDC/2.6 A
Capable of charging during power-off.
Indicates 4 conditions with two colors LED (red and green).
5 level indicator
6
Other
2650A, 2652A, 2658A, 2651 common
Operating temperature
0 to 50° C (guaranteed at 23±10 °C, without soft carrying case)
Operating humidity
less than 40 °C/80 %RH
Storage temperature
-20 to 60 °C, less than 60 °C/70 %RH
Dimensions
162(W) x 71(H) x 265(D) mm , 6.38 (W) x 2.80 (H) x 10.43 (D) inch
(excluding projections, protection bumper and stand)
Weight
approx. 1.8 kg or 4 lbs (including battery)
(guaranteed at less than 33 °C/70 %RH, without soft carrying case)
* Refer to section 22) T racking Generator Mode for the specific ations of th e tracki ng generat or, mod el 2652A.
2.2 External view
[Unit : mm]
* B&K Precision reserves the right to make changes in design, specification and other information without prior notice.
7
3. Explanation of Panel
1) TFT display
This is a large liquid crystal display with 640 (H) x 480 (V) dots. It simultaneously displays spectrum (10div x
10 div), various setting parameters and measured values.
2) Function key (F1 to F 6)
The function can change according to the operation key.
3) Center frequency key
8
The center frequency is set with this key. The setting range is 0 to 3.3 GHz (for 2650A, 2652A, and 2651), and
0 to 8.5 GHz (for 2658A). The setting resolution is 20 kHz.
4) Frequency span key
The frequency span is set with this key.
For 2650A, 2652A, and 2651, it is set in the range from 200 kHz to 2 GHz, ZERO SPAN or FULL SPAN (3.3
GHz). For 2658A, it is set in the range from 200 kHz to 5 GHz, ZERO SPAN or FULL SPAN (8.5 GHz).
5) Reference level key
The reference level is set with this key. It can be set in the range from +10 dBm to –60 dBm by 1 dB step.
6) R esolution bandwid th key
The resolution bandwidth is set with this key. It can be set in the range from 3 kHz to 3 MHz and to AUTO.
7) Video bandwidth key
The video bandwidth is set with this key. It can be set in the range from 100 Hz to 1 MHz and to AUTO.
8) AUTO tuning key
When pushing this key, the spectrum with the maximum level is searched within full span (3.3 GHz @
2650A/2652A/2651 and 8.5 GHz @ 2658A), and then it is adjusted to the center of the screen, and the
optimum setting parameters are set. In the case when in zero span, full span, input signal level lower than –40
dBm and input frequency lower than 50 MHz, this function will not work correctly.
9) M easuring function key
Available for Channel power, Adjacent channel leakage power, Occupied frequency bandwidth, Electric field
strength, and Magnetic field strength measurement.
10) Calculation fu nction key
Available for Max hold, Min hold, Average and Over write.
11) Display scale key
The display scale of amplitude axis can be selected as 2 dB/div, 5 dB/div or 10 dB/div with this key.
12) Sweep key
The sweep time can be set in the range from 10 ms to 30 s or AUTO. This key can also select the detection
mode.
13) Hold/Run key
Used to hold or run measurements.
9
14) Marker & Peak search key
This key is used for setting marker or peak search.
15) Save/Load k ey
Used for saving or loading a spectrum or settings parameters.
16) Copy key
This key allows the screen image to be printed on USB printer (option) or stored in USB memory.
17) UTIL key
Used for setting label entry, clock, and buzzer.
18) Display control k ey
Used for setting color, backlight ON/OFF or brightness of backlight.
19) Rotary encoder
This is used for adjusting settings and parameters.
20) Power switch
This is for power ON or OFF.
21) Input connector
N(J) connector
22) Indicator for charg ing condition
Two color LED indicates the charging conditions of battery.
23) Input connector for DC power source
Connect AC adaptor MA400.
24) USB A plug
For connecting USB printer (option) or USB memory.
25) USB B plug
For interfacing with a PC
10
4. Explanation of Screen
Center frequency, Frequency span,
Resolution bandwidth, Video bandwidth
cases, slowing down the sweep rate will change this indicator.
Frequency Axis Setting Values Display
Remaining Battery
Active Area Display
Amplitude Axis Setting Values Display
Reference level, Input attenuator,
Display scale
Sweep Axis Setting
Values Display
Sweep time,
Detection mode
Calculation function display
Measuring function display
**UNCAL Display
UNCAL
Display
Spectrum Display
10div x 10 div
Operating Information display
Loaded spectrum information display
* This is also used as a display for set values
when the measuring function is used.
**UNCAL is displayed when a normal measurement cannot be done due to sweep rate being too fast. In such
Function Menu
Lower: Clock Display
11
Upper: Label Display
Measured Values display
5. Function Menu
Function menu
Key Sequence
Page
A
ACP
MEAS → F2
41
ACP WIDTH
MEAS → (F2) → F3
42
ANT
MEAS → (F4)→ F1
44
AVG
CALC → F4
32
B
BACK LT
DSPL → F2
53
BACK SPACE
FREQ → F6 → F5
21
BAND CNTR
MEAS → (F1) → (F1)
41
BAND WIDTH
MEAS → (F1) → (F1)
41
BUZZER
UTIL → F3
59
C
CENTER FREQ ←
FREQ → F1
20
CENTER FREQ →
FREQ → F2
20
CLEAR
FREQ → F6 → F4
21
CLOCK CONFIG
UTIL → F4
59
CONV
MKR → F6
33
D
DELETE
SAVE/LOAD → F3
36
DEVICE MEM
SAVE/LOAD → F4
36
DET
SWEEP → F4
29
DISP CLEAR
SAVE/LOAD → F2 →
38
E
E/F ANT
MEAS → F4
43
EncST
FREQ → F4
20
EMI-R **1
SAVE/LOAD → F6 →
50
F
FREQ COUNT
MEAS → F6
49
I
IMP
REFER → F6
25
K
KeyST
FREQ → F3
20
L
LABEL
UTIL → F1
58
LOAD
SAVE/LOAD → F2
38
M
M/F PROBE
MEAS → F5
47
MAX HLD
CALC → F2
31
MEAS OFF
MEAS → (F1~5) → F6
41
MIN HLD
CALC → F3
31
MARKER
MKR → F1
33
Function menu
Key Sequence
Page
M
MODE
MEAS → (F1 → F3)
41 to 43
N
NEXT PEAK
MKR → (F4) → F2
34
NORMAL
CALC → F1
31
NORMAL **1
SAVE/LOAD → F6 →
50
O
OBW
MEAS → F3
42
OFSdB
REFER → F5
24
OFS STEP
REFER → F3
24
P
PEAK SERCH
MKR → F4
34
PEAK SERCH
MKR → F5
34
PROBE
MEAS → (F5) → F1
48
R
RATIO
MEAS → (F3) → F2
43
RBW ALL AUTO
RBW → F3
28
RBW AUTO
RBW → F2
28
RBW MANUAL
RBW → F1
27
REFERENCE
MEAS → (F2) → F1→
42
S
SAVE
SAVE/LOAD → F1
36
SCALE 5dB
SCALE → F3
27
SPR. FR **2
CALC → F6
32
SWEEP AUTO
SWEEP → F2
29
SWEEP MANUAL
SWEEP → F1
29
T
T.G. MODE **3
SWEEP → F6
55
TRIG
SWEEP → F5
30
U
V
VBW ALL AUTO
VBW → F3
29
VBW AUTO
VBW → F2
28
VBW MANUAL
VBW → F1
28
Z
ZONE CENTER
MKR → (F5) → F1
35
5.1 List of Function Menu
The function menu is shown in the table below. For descriptions of each function, see their respective page. For the
sequence of selection for the function menu, refer to “5.2 Menu tree”.
ACP OFFSET MEAS → (F2)→ F2 42
→ F1
F1
→ F2
→ F3
BRIGHT DSPL → F3 53
CH POWER MEAS → F1 41
COLOR DSPL → F1 53
F5
EMI-C **1 SAVE/LOAD → F6 →
F2
F3
50
OVR WR CALC → F5 32
PEAK SEACH MKR → (F5)→ F1 34
NORM
ZONE
PRE SET SAVE/LOAD → F6 36
REFERENCE
CENTER
WIDTH
SET MKR FREQ → F5 20
MEAS → (F2) → F4 42
F5
MARKER DELTA MKR → F2 33
NORMAL
Ten Key MODE FREQ → F6 20
UNIT REFER → F1 → 4 24
ZONE WIDTH MKR → (F5) → F2 35
**1 2651 only **2 2658A only **3 2652A only
12
5.2 Menu Tree
SPAN
50 MHz
* Refer to “9. Reference Level” for details.
CH PO WER
OBW
CENTER FREQ
100 MHz
MHz
CLEAR
SPACE
RETURN
The following is the sequence of selection for the function menu. The function menu corresponds to the function key
of F1 to F6.
“Function menu”
FREQ
ACP
F1
F2 F3 F4
* Refer to “7. Center Frequency” for details.
: Set the center frequency
GHz
KeyStep
“.”
E/F
ANT
EncStep
10 MHz
M/F
PROBE
F5
SET
MKR
BACK
FREQ
COUNT
F6
Ten Key
MODE
SPAN
REFER
* Refer to “8. Frequency Span” for details.
NORMAL
SPAN
FULL
: Set the frequency span
UNIT
dBm
RL STEP
1dB
: Set the reference level
ZERO
SPAN
OFS STEP
1dB
1 GHz
OFFSET
OFF
SPAN
OFS dB
0dB
1 MHz
IMP
50Ω
13
* T.G. MODE is only for 2658A.
* Refer to “13. Sweep Axis / Detection Mode” for details.
AUTO
* Refer to “12. Video Bandwidth” for details.
* Refer to “11. Resolution Bandwidth” for details.
* Refer to “10. Display scale” for details.
SCALE
SCALE
RBW
VBW
: Set the display scale
MANUAL
: Set the RBW
5dB/ 10dB/
RBW
AUTO
2dB/
ALL AUTO
SWEEP
MANUAL
: Set the VBW
MANUAL
: Set the sweep time
T.G.
VBW
AUTO
SWEEP TIME
NORM
ALL AUTO
ALL AUTO
DET
SMPL
TRG
INT
T.G.
MODE
ON
ON
14
* Refer to “16. Calculation Function” for details.
CALC
* Refer to “17. Marker & Peak Search” for details.
* “SPR. FR” is only for 2658A.
NORMAL
MAX HLD
256
MIN HLD
256
AVG
256
OVR WR
256
SPR. FR
OFF
: Set the number
MKR
MARKER
DELTA NORMAL OFF
: Move the marker (NORM mode)
PEAK
NEXT
PEAK SEARCH
NORMAL
F4: Peak Search
ZONE
CONV
dBm → W
SEARCH
PEAK
RETURN
: Move the marker (NORM mode)
F5: Zone marker
CENTER
ZONE
WIDTH
RETURN
: Set the zone center frequency (ZONE mode)
15
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