B&K Precision 2658A User Manual

Model 2650A/2651 Series

3.3 GHz/8.5 GHz Spectrum Analyzer

USER MANUAL

v 092711

Before Using the Product

· Please note the following describe d 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 befo re remo vin g the b atter y 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 us age 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 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

ELECTION OF IMAGE AREA -------------------------------------------------------------- 58 RINT ON PRINTER ------------------------------------------------------------------------- 58 TORAGE INTO USB MEMORY ----------------------------------------------------------- 58 RANSFERRING INTERNAL DATA TO USB MEMORY IN LUMP SUM ----------------- 59

PRINTER (OPTION) ------------------------------------------------------------------- 59 MEMORY ------------------------------------------------------------------------------- 60

24. UTILITY FUNCTION <UTIL> ------------------------------------------------------- 61

24.1 L

24.2 M

24.3 B

24.4 S

ABEL FUNCTION --------------------------------------------------------------------------- 61

ENU OFF ----------------------------------------------------------------------------------- 62 UZZER SETTING --------------------------------------------------------------------------- 62 ETTING THE CLOCK ----------------------------------------------------------------------- 62

25. USB DEVICE FUNCTION ----------------------------------------------------------- 64

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 -------------------------------------------------------------------------------------- 64 OW TO CONNECT ------------------------------------------------------------------------- 64

NSTALLATION OF DRIVER ----------------------------------------------------------------- 64

AMPLE PROGRAM ------------------------------------------------------------------------- 64 XPLANATION OF COMMAND -------------------------------------------------------------- 65

NPUT OF FREQUENCY --------------------------------------------------------------------- 74

RANSFER OF SPECTRUM DATA --------------------------------------------------------- 74

RITING OF ORIGINAL COMPENSATION DATA ----------------------------------------- 75

26. OPTION ---------------------------------------------------------------------------------- 77

27. BASIC PERFORMANCE TEST (2650A/2651/2652A/2658A) ------------ 78

27.1 F

27.2 A

27.3 D

27.4 D

27.5 L

REQUENCY CHARACTERISTICS --------------------------------------------------------- 78

CCURACY OF REFERENCE LEVEL ------------------------------------------------------ 79 ISPLAY ACCURACY OF CENTER FREQUENCY ---------------------------------------- 79 ISPLAY ACCURACY OF FREQUENCY SPAN -------------------------------------------- 80

INEARITY OF AMPLITUDE AXIS ---------------------------------------------------------- 80

v

1. Outline

1.1 Product outlines

The 2650A series are authentic spectrum analyzers in a compact and lightweight form factor providing performance and functions comparable to large-size bench type instruments. The features are as follows.

1) Compact and lightweigh t 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 conven ient f or 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 ada pter

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 standa rds and is backwards compatible with USB 2.0 devices.

5) USB device f or PC connectivity

USB interface with tran sfer 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 di splay dynamic range

Wide dy namic 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

● H ard 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 mo dels

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 te st Applications: Radiated and conducted emission measurement

3

2. Specifications

Frequency range

50 kHz t o 3.3 GHz

50 kHz t o 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 scree n, 1001dots rea dout 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, num eric key and functi on key

@frequency span: 200 kHz to 10 MHz, RBW 3 k Hz, 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 @ R BW: 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)

@ sw eep time of 0.3s, 23±5 °C

GHz

@frequency span: 200 kHz to 10 MHz, RBW 3 k Hz, 23±5°C

within ± (60＋300T) kHz±1dot @frequency span: 20 MHz to 8.5 GHz, RBW 100 k Hz, 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 a re captured interna lly 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

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 e rror

±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 2GH z

Within ±0.1 %±1dot @frequency span : 0 to 5GH z

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 diff erence 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 s etting 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 als o work with USB 2.0 de vices)

Device Connector

B plug

Transfer rate

12 Mbps

Hard copy

USB printer (option) conn ected to A plug (host) enables hard copy of screen.

host connector

A plug

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 pe ak level, and moreove r NEXT peak at

Number of sweeps is 2 to 1024 ( power of 2 ) and inf inite.

(needs optional dipole antenna), Magnetic field strength (needs optional magnetic field probe) and Frequency count er

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 w ith 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 bum per and stand)

Weight

approx. 1.8 kg or 4 l bs (including battery)

(guaranteed at less than 33 °C/70 % RH, without soft carrying case)

* Refer to section 22) Tracking Generator Mode for the s pecification s of the tr acking gen erator , model 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.

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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, ZER O 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 function 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 key

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 key

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 adapt or 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 Se tting 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 Functi on 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 POWER

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 Fre quency” 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 S pan” 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 B andwidth” for details.

* Refer to “10. Dis play scale” for details.

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

DET

SMPL

TRG

INT

T.G.

MODE

ON

14

* Refer to “16. Calculation Fu nction” 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

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

* Refer to “18. Save / Load” for details.

SAVE/LOAD

SPECT

Save menu

Load menu

1

Delete menu

Main menu

NORMAL

EMI - C

Preset menu for 2 651

SAVE

MODE SELECT

LOAD

DELETE

MEM

DEVICE

USB

PRE SET

OBJECT

PARAM

BOTH

SAVE

EXECUTE

RETURN

: Set the address to store the spectrum or the parameter

File Search Step

10

100

LOAD

EXECUTE

DISP

CLEAR

RETURN

: Set the address to call the spectrum or the parameter

File Search Step

1 100

10

DELETE

EXECUTE

RETURN

: Set the address to eliminate the trace or parameter

For 2651

PRESET

EMI - R

16

MEAS

WIDTH

* Refer to “19. Measuri ng Func tion” for details

CH POWER

MODE

BAND

MODE

BAND

ACP

OBW

: Set the parameter

BAND

CENTER

: Set the parameter

ADJ CH

OFFSET WIDTH

E/F

ANT

REFERENCE

CENTER WIDTH

M/F

PROBE

Freq

COUNT

MEAS

OFF

MEAS

OFF

: Set the parameter

MODE

N%

ANT

M401

PROBE

CP-2S

RATIO %

99.5%

Enc Step

1%

Input the probe ID (first time only) *Refer to “19.5 Magnetic field strength measurement” for details.

MEAS

OFF

MEAS

OFF

MEAS

OFF

17

OFF

JUN

←

→

* Refer to “21. Screen Control” for details

DSPL

ON

COPY

UTIL

COLOR

COLOR1

BACK LT

BRIGHT

80

* Refer to “23. Storage/Print Screen Image” for details

AREA

WHOLE

PRINT

EXECUTE

Bmp->USB

COPY

* Refer to “24. Utility Function” for details

LABEL

MENU

BUZZER

MEM->USB

EXECUTE

CLOCK

012

: Select the character

YEAR

08

: Select the numeric value

abc

MONTH

ALARM

ABC

DATE

30

CONFIG

@%*

HOUR

23

BACK SP

MIN

50

ENTER

18

6. Preparing for Operation

Battery full charge time: approx. 4 hours

Please make sure to connect to ground.

6.1 Stand

Utilize the stand on the back to use the screen in an easier-to-see angle on the desk.

6.2 Connection to power supply

The AC adapter MA400 is used to power the instrument and for charg ing the MB400 battery. (Charging starts automatically if the A C adapter is c onnected and unit is power-off.) Connect the adapter as in the figure below and connect t he AC plug t o the power line (100-240 VAC, 50/60 Hz). For static electricity protection, ground the unit by connecting the three cores if possible. Not grounding the unit can damage the unit and/or device being measured. Do not use an AC adapter other than the MA400 supplied with the unit. Using an AC adapter other than the MA400 may cause damage to the unit.

Battery operating time: 4 hours maximum (with backlight set to minimum) *Tested at normal temperature with initial setting parameters.

The battery indicator is divided into five levels and is displayed on the screen. When the mark of the battery remainder displays , the buzzer will sound even if buzzer is OFF under settings, and the power will turn off within a few minutes. Ensure to protect any data or measurements promptly by saving into memory to prevent data lost if the unit shuts down.

Connect to 100 to 240 VAC, 50/60 Hz

19

6.3 Battery Charge

On Charge

Red

Completion of Charge

Green

Remove the battery when unit is connected to the AC adaptor.

No battery

Green Abnormal

Blinking Re d

Fig. 1

Fig. 2

Fig. 3

* Please exchange the battery for a new one (MB400) when operating time extremely shortens.

When the unit is powered off and c onnected to AC adaptor MA400, the battery will be charged. The charging conditions are indicated by two c olors LED , and they correspond to the table below.

Charging condition Color of LED Good usage of battery

Otherwise, battery life will be shortened.

※LED is turned off at power-on.

The “abnormal” condition means that the charging time is more than the time expected, or the battery voltage is too high.

Note: The battery charges only when the unit is turned off (and the AC adapter connected). It is not possible to charge the batteries while the unit is turned on. Please charge batteries with ambient temperature

in the range of 0 ºC to 40 ºC.

Caution

Misuse of the battery may cause leaks, abnormal heat, fire or explosion. For safe use, please observe the following precautions fully.

* Do not short-circuit the terminal of the removed battery. * Do not cause an impacted shock due to throwing, dropping or striking. * Do not disassemble or remodel the battery. * Do not throw the battery into a fire or any sources with heat. * Do not leave the battery in a place with high temperature.

* Do not wet the terminal of the battery. * Do not cool the battery, and do not charge it in cold outdoor conditions. It decreases performance and battery life.

* Do not charge the battery in any other way except according to specifications.

* When you ke ep the bat tery, please keep it in a cool, dark environment where humidity is low.

Moreover, please keep it out of reach from children. If the battery remains not used for a long time, it might decrease its charges.

6.4 Installation of Battery

To install the battery, please turn off the power and unplug the AC adaptor if in use. Remove the battery cover on the back of the unit by first pressing down with light pressure, then slide towards the direction of the arrow as shown in Fig.1. Next, put the battery a s shown in Fig.2. Move it in the direction of the arrow shown in Fig.3 unti l it locks in. Use only the MB400 battery as s pecified. Otherwise, the unit may cause problems or malfunction.

20

7. Center Frequency <FREQ>

←

→

* Center frequency setting range: 0 to 3.3 GHz for 2650A/2652A/2651, 0 to 8.5 GHz for 2658A

When is pushed, the following function menu is displayed.

FREQ

CENTER FREQ

F1 F2 F3 F4 F5 F6

KeyStep

100M

* The center frequency may shift for a while (up to 10 sec.), after setting is changed.

7.1 Setting with step keys ( [F1], [F2] )

1. When is pushed, the center frequency decreases in the set step size.

2. When is pushed, the center frequency increases in the set step size.

3. Setting step size:

F1

F2

EncStep

0.1M

SET

MKR

Ten Key

Mode

When is pushed, the step size is changed according to the following.

F3

AUTO 100MHz 10MHz 1MHz 100kHz 20kHz

However, only for 500 kHz frequency span, the step size is set to 50 kHz. If the frequency span is less than 500 kHz, the step size is set to 20 kHz. AUTO is recommended for normal use.

AUTO : The step size is 1/10 of the frequency span.

7.2 Setting with encoder

1. By rotating , the center frequency is changed in the set step size.

2. Setting step size:

When is pushed, the step size is changed according to the following. AUTO 100MHz 10MHz 1MHz 100kHz 20kHz

AUTO : The step size is 1/500 of the frequency span

However, if the frequency span is less than 5 MHz, the step size is set to 20 kHz.

AUTO is recommended for normal use.

F4

21

7.3 Setting with numeric key

SPACE

GHz

MHz

1 2 3 4 5

6 7 8

9

0

.

MHz

GHz

1. When is pushed, the following function menu is displayed.

2. , and correspond to <GHz>, <MHz> and <. > and correspond to <CLEAR> and <BACK SPACE>.

F1 F2 F3

F4 F5

F6

F1 F2 F3 F4 F5 F6

“.”

CLEAR

BACK

RETURN

Changing the center frequency by encoder is available in Ten Key Mode.

3. The center frequency can be entered directly according to “Numeric Key Mapping Diagram” as follows.

“Numeric Key Mapping D iagram”

RBW VBW

SCALE

SWEEP

AUTO TUNE

HOLD

RUN

COPY UTIL DSPL

4. The center frequency is determined by inputting the unit of frequency. To enter the unit, and are available.

F1 F2

( and are also available.)

UTIL

DSPL

MEAS CALC

MKR

SAVE

LOAD

* Any figures below the setting resolution (20 kHz) will be truncated.

5. C hange of se tting

The setting can be changed before pushing the unit key. : The setting values are cleared. : The last input digit is deleted.

F4

F5

22

6. Cancel of Ten Key Mode

1GHz

By pus hing or , unit will return to function menu.

FREQ F6

7.4 According t o Marke r Posit ion

When is pushed, the center frequency is set according to the frequency of current marker position. * Any figures below the setting resolution (20 kHz) will be truncated. * When the marker is not displayed, this operation is invalid. (The menu option disappears.)

F5

8. Frequency Span <SPAN>

When is pushed, the following function menu is displayed.

SPAN

NORMAL

SPAN

F1 F2 F3 F4 F5 F6

By opera ting , the frequency span is set.

SPAN

FULL

SPAN

ZERO

SPAN

50MHz 1MHz

2650A / 2652A / 2651

By rotating , the frequency span is changed in the specified step size as follows.

ZERO 200k 500k 1M 2M 5M 10M 20M 50M 100M 200M 500M 1G 2G FULL (3.3 GHz)

2658A

1. By rotating , the frequency span is changed in the specified step size as follows.

ZERO 200k 500k 1M 2M 5M 10M 20M

50M 100M 200M 500M 1G 2G 5G FULL (8.5 GHz)

2. By pushing , the frequency span is set to FULL SPAN. Under this condition, the instrument

F2

will return to the former span when the rotary knob is rotated.

3. By pushing , the frequency span is set to ZERO SPAN.

F3

23

4. When is pushed and then the setting is FULL or ZERO span, the frequency span is returned to

Two bands

Frequency connection point

3.4 GHz

Band 1- and Band 1+

6.2 GHz

Frequency band

Measured frequency range

Base band

50 kHz to 3.5 GHz

-

3.3 GHz to 6.3 GHz

Band 1+

6.1 GHz to 8.5 GHz

the last setting.

F1

5. By pushing ~ , the frequency span in function menu is set.

F4 F6

8.1 Switching Frequency Band

2658A has three frequency bands.

Band 1

The frequency band is automatically set to the appropriate band based on the center frequency and span. (At the span less than 200 MHz, only one band is used.) When the setting frequency range belongs to two ba nds, the lower band has prior ity.

The frequency connection point of two bands is fixed as follows.

Base band and Band 1-

Note: The spectrum may change a little at the frequency connection point. For accurate measurement, center frequency and span should be set as the measured frequency range in one band.

24

9. Reference Level <REFER>

When is pushed, the following function menu is displayed.

REFER

UNIT

dBm

F1 F2 F3 F4 F5 F6

RL STEP

1dB

OFS STEP

1dB

OFFSET

OFF

9.1 Setting of Reference Level

By rotating , the reference level is changed. (Refer to “9.7 Reference Level Setting Range for Each Unit” for details.)

9.2 Change of Unit of Amplit ude Axis

OFSdB

0.0

IMP

50Ω

When is pushed, the unit is set as f ollows.

F1

dBm dBμV dBmV dBV

9.3 Setting of Step Size of Reference Level

By pushing , the step size is changed to 10 dB or 1 dB.

F2

9.4 On-Off Setting of Offset

By pushing , the offer set ON/OFF is changed.

F4

9.5 Setting of Offset Level

1. By operating , the offset of reference level is set.

When external amplifier or attenuator is used, the display level can be matched by the offset.

F5

The setting range is -50.0 to 50.0 dB. The reference level is displayed including the offset.

* If the offs et is set, “OFST” is displayed in Amplitude axis setting values display area.

Furthermore, the level at the marker point is displayed including the offset.

25

* If the unit is changed to dBμV, dBmV, dBV or dBm, the offset is automatically changed.

Maximum

10

117

57

-3

Minimum

-40

67 7 -53

Minimum

dBμA/m

Setting

M401

M402

M403

M404

M405

M406

CP-2S

Maximum

143

146

149

150

137

159

160 ~ 203

Minimum

93

96

99

100

87

109

110 ~ 153

Minimum

2. By pushing , the step size of offset is changed. (10 dB, 1 dB, 0.1 dB)

F3

9.6 Setting of Input Impedance

By pushing , the input compensation can be set to 50 Ω (no offset) or 75 Ω. (5.6 dB offset

compensation)

The reference level is adjusted automatically, based on the input impedance selection. When the input impedance

is set to 75 Ω, the reference level is displayed including offset and conversion of 75Ω. For the amplitude reading to

be correct, a coaxial 50 Ω /75 Ω impedance conversion adapter must be connected to the RF input.

* When “75 Ω” is selected, values in Amplitude axis setting values display area will change according to 75 Ω, and the offset is set to 5.7 dB (insertion loss of 50 Ω /75 Ω adapter ). Moreover, the offset can be changed.

When the unit at marker point is set to W, V, V/m or other, it is converted correctly from dBm.

* Be sure to attach a coaxial 50 Ω /75 Ω impedance conversion adapter when selecting “75 Ω”

F6

9.7 Reference Level Setting R ange fo r Each Un it

Unit dBm dBμV dBmV dBV

(shifted spectrum data)

“Available unit in measuring function”

Unit dBμV/m (Electric field strength measurement)

-60 47 -13 -73

(Magnetic field strength

measurement)

(shifted spectrum

data)

* When the reference level is set between “Minimum” and “Minimum (shifted spectrum data)”, the

spectrum of “Minimum” is shifted and displayed on the screen.

73 76 79 80 67 89 90 ~ 133

26

* When the reference level is set below “Minimum”, “*S/W AMP” is displayed in Amplitude axis setting

values display area on t he screen.

Calculation for mula (con version from dBm)

● A[dBμV] = 107 + X [dBm] ● B[dBmV] = 47 + X [dBm] ● C[dBV] = -13 + X [dBm]

● D[dBμV/m] = 68.8 / λ×√(X/Gar) [dBm] λ : Wavelength[m] Gar : Antenna absolute gain[times]

● E[dBμA/m] = 107 + X + F[dBm] F : Probe calibration coefficient[dB] **changes depending on the

frequency.

9.8 Relationship Between Reference Level and ATT/AMP (at dBm)

REFER

(dBm)

10 25 0

9 24 0

8 23 0

7 22 0

6 21 0

ATT

(dB)

AMP

(dB)

REFER

(dBm)

-3 12 0

-4 11 0

-5 10 0

-6 9 0

-7 8 0

ATT

(dB)

AMP

(dB)

REFER

(dBm)

-16 20 21

-17 19 21

-18 18 21

-19 17 21

-20 16 21

ATT

(dB)

AMP

(dB)

REFER

(dBm)

-29 7 21

-30 6 21

-31 5 21

-32 4 21

-33 3 21

ATT

(dB)

Internal input attenuator (ATT) and IF amplifier (AMP) are automatically set to the optimum values based on the

reference level (REFER). (The input attenuator cannot be set independently.)

AMP

(dB)

27

5 20 0

-8 7 0

-21 15 21

-34 2 21

4 19 0

3 18 0

2 17 0

1 16 0

0 15 0

-1 14 0

-2 13 0

-9 6 0

-10 5 0

-11 4 0

-12 3 0

-13 2 0

-14 1 0

-15 0 0

-22 14 21

-23 13 21

-24 12 21

-25 11 21

-26 10 21

-27 9 21

-28 8 21

-35 1 21

-36 5 26

-37 4 26

-38 3 26

-39 2 26

-40 1 26

* When the input signal level is higher than the proper level for 1st mixer’s terminal, harmonics distortion and

spurious are generated.

This product is designed so that the input signal level of 1st mixer is determined to proper level based on the

reference level.

28

10. D isplay Scale <SCALE>

10div/

5div/

2div/

When is pushed, the following function menu is displayed.

SCALE

F1 F2 F3 F4 F5 F6

10.1 Setting the Func tion Key

1. By pushing , 10 dB/div display scale is set.

2. By pushing , 5 dB/div display scale is set.

3. By pushing , 2 dB/div display scale is set.

F1

F2

F3

11. Resolution Bandwidth <RBW>

When is pushed, the following function menu is displayed.

By rotating , RBW is set as follows.

RBW

MANUAL

F1 F2 F3 F4 F5 F6

AUTO ALL AUTO

11.1 MANUAL Mode

By pushing or rotating , MANUAL mode is set.

F1

2650A/2652A/2658A: 3kHz 10kHz 30kHz 100kHz 300kHz 1MHz 3MHz

2651: 3kHz 9kHz 30kHz 120kHz 300kHz 1MHz 3MHz

29

11.2 AUTO Mode

By pushing , the optimum RBW is set based on the frequency span and sweep time. * When AUTO mode is set, “*” is displayed on the right end of RBW setting value display.

F2

11.3 ALL AUTO Mode

By pushing , the optimum RBW, VBW and sweep time are set based on the frequency span.

* When ALL AUTO mode is set, “*” is displayed on the right end of each setting value display.

* When RBW is set to 3 kHz or 10 kHz, the selectivity at 60 dB becomes larger than an actual value due to SSB

phase noise.

F3

12. V ideo Bandwidth <VBW>

When is pushed, the following function menu is displayed.

VBW

MANUAL

F1 F2 F3 F4 F5 F6

AUTO ALL AUTO

12.1 MANUAL Mode

By pushing or rotating , MANUAL mode is set.

By rotating , VBW is set as follows.

100Hz 300Hz 1kHz 3kHz 10kHz 30kHz

100kHz 300kHz 1MHz

F1

12.2 AUTO Mode

By pushing , the optimum VBW is set based on the frequency span and sweep time.

When AUTO mode is set, “*” is displayed on the right end of VBW setting value display.

F2

30

12.3 ALL AUTO Mode

By pushing , the optimum RBW, VBW and sweep time are set based on the frequency span.

F3

* When ALL AUTO mode is set, “*” is displayed on the right end of each setting value display.

13. Sw eep Axis / Detection Mode <SWEEP>

When is pushed, the following function menu is displayed.

* T.G. MODE [F6] is only for 2652A. This menu is not displayed on 2650A, 2651 and 2658A.

For the details, refer to “22. Tracking Generator Mode”. [F5] is only displayed when an external trigger signal is detected at the trigger port.

SWEEP

MANUAL

F1 F2 F3 F4 F5 F6

AUTO

ALL AUTO

DET

SMPL

TRIG

INT

T.G.

MODE

13.1 MANUAL Mode

By pushing or rotating , MANUAL mode is set.

By rotating , sweep time is set as follows.

10ms 30ms 0.1s 0.3s 1s 3s 10s 30s * For 2650A, 2651 and 2652A, when the setting is FULLSPAN, it cannot be set to 10 ms.

* For 2658A, when the setting is 5 GHz SPAN or FULLSPAN, it cannot be set to 10 ms.

F1

13.2 AUTO Mode

By pushing , the optimum sweep time is set based on the frequency span and RBW. * When AUTO mode is set, “*” is displayed on the right end of SWEEP setting value display.

F2

13.3 ALL AUTO Mode

By pushi ng , the optimum RBW, VBW and sweep time are set based on the frequency span.

F3

* When ALL AUTO mode is set, “*” is displayed on the right end of each setting value display.

13.4 Setting of Detection Mode

(For 2651, refer to “20. EMI test”)

31

By pushing , the detection mode is set.

POS SMPL NEG

POS (Positive Peak): The maximum value of the sample points is detected. SMPL (Sample): The momentary value of the sample points is detected. NEG (Negative Peak): The minimum value of the sample points is detected.

F4

13.5 Setting of Trigger Source

By pushing , the trigger source is set.

INT EXT

INT: The sweep is automatically repeated. This setting is normally used. EXT: When the signal over the trigger level (0.56 V) is input to external trigger input, the sweep starts. The sweep automatically starts without an input. (Available only for zero span)

F5

14. AUTO Tuning <AUTO TUNE>

When is pushed, the spectrum with the maximum level is searched within full span, and then it is adjusted to the center of the screen, and the optimum setting parameters are set. * Set the frequency span before setting AUTO tuning. * There is no function menu displayed for this mode. Auto tuning will execute upon pushing the key.

* The auto tuning does not operate normally in the following conditions.

AUTO TUNE

1) Zero span

2) Full span

3) The signal level is –40 dBm or lower.

4) The signal frequency is 50 MHz or lower.

15. Hold / Run <HOLD/RUN>

By pushing , the sweep is switched to halt and continuance. * There is no function menu displayed for this mode.

HOLD / RUN

32

16. C alculation Function <CALC>

When is pushed, the following function menu is displayed.

CALC

NORMAL

F1 F2 F3 F4 F5 F6

* By pushing , the sweep is restarted. * By pushing ~ , the calculation function is selected.

MAX HLD

* *

HOLD / RUN

F1 F5

MIN HLD

* *

AVG

56

By rotating , the number of times of the sweep can be set.

16.1 NORMAL Mode

1. When is pus hed, the normal mode is set. The calculation is not performed in this mode. The

F1

number of times of the sweep is infinite. This mode is normally used.

OVRWR

* *

SPRI FR

OFF

* When this mode is set, “NORMAL” is displayed in the CALC area on the screen.

(Refer to “4. Explanation of Screen” for the details.)

16.2 MAX HOLD Mode

1. By the operation of , the number of times of the sweep in the MAX HOLD mode is set.

2. The update spectrum data is compared with the data left last time at each point, and the larger one is retained and displayed.

2 4 8 16 32 64 128

256 512 1024 * * (infinite) * When this mode is set, “MAX --- (number of times)” is displayed in the CALC area on the screen.

(Refer to “4. Explanation of Screen” for the details.)

F2

16.3 MIN HOLD Mode

1. By the operation of , the number of times of the sweep in the MIN HOLD mode

F3

is set.

33

2. The update spectrum data is compared with the data left last time at each point, and the smaller one is retained and displayed.

2 4 8 16 32 64 128

256 512 1024 * * (infinite)

* When this mode is set, “MIN --- (number of times)” is displayed in the CALC area on the screen. (Refer to “4. Explanation of Screen” for the details.)

16.4 AVERAGE Mo de

1. By the operation of , the number of times of the sweep in the AVERAGE mode is set.

2. The simple averaging process is executed at each sweep. 2 4 8 16 32 64 128

256 512 1024

* When this mode is set, “AVG --- (number of times)” is displayed in the CALC area on the screen. (Refer to “4. Explanation of Screen” for the details.)

F4

16.5 OVERWRITE Mode

1. By the operation of , the number of times of the sweep in the OVER WRITE mode is set.

2. The image on the screen is not cleared at each sweep, and the overwriting display is executed.

2 4 8 16 32 64 128

F5

256 512 1024 * * (infinite)

* When this mode is set, “OVER WR” is displayed in the CALC area on the screen. (Refer to “4. Explanation of Screen” for the details.) * Only the last spectrum is saved.

16.6 SPURIOUS FREE Mode (2658A only)

1. By pushing , the SPRIOUS FREE mode, by which the spurious response at band 1- and band 1+ is simply deleted, is selected.

* “SPR” is displayed in CALC area on the screen. (Refer to “4. Explanation of Screen” for the details.)

F6

34

dBm →W

NORMAL

DELTA

OFF

* Differing from base band at which the up-c onversion of input frequency is done with a frequency mixer, the spurious resp onse pec uliar to ban d 1- and band 1+ is generated because the down-conversion is done at those two bands. * About SPURIOUS FREE mode

1. SPURIOUS FREE mode is a mode by which the spurious response peculiarly caused at band 1+ is simply deleted.

2. SPURIOUS FREE mode is especially effective in the measurement of a stationary wave.

3. If SPURIOUS FREE mode is used in measurement of a signal with level change or frequency change, the phenomenon that the level goes down will occur.

4. The noise level goes down a little in case of a noise changing at random. In short, the same phenomenon as MIN HOLD function happens.

* How to judge SPURIOUS response at band 1- and band 1+

The procedure for judging SPURIOUS response at band 1- and band 1+ is as follows.

1. Set the center frequency to < (current setting value) + f >.

2. The spectrum shifting left by f is a correct spectrum, but another spectrum shifting such as left by 2f, left by 3f, right by f, right by 2f or right by 3f is a spurious response. * “f ” should be changed according to SPAN for easy judgment. For reference;

f = SPAN / (10 to 50) (corresponding to 0.2 to 1 div) Example: judging a spectrum displayed at 6.92 GHz (setting : center frequency 6.92 GHz and SPAN 500 MHz)

1. Set the center frequency to < 6.92 GHz + 500 MHz/25 > = 6.94GHz.

2. A spectrum at 6.92 GHz (shifting left by f from 6.94 G Hz) is correct. A spectrum at 6.98 GHz (shifting right by 2f from 6.94 GHz) is spurious. * Additio nally, a sp urious re sponse men tioned abo ve shift ing right by 2f at band 1+ is larges t, and othe r spurious response are about 25 to 50 dB smaller than that.

17. M arker & Peak Search <MKR>

When is pushed, the following function menu is displayed.

● Ma in menu of marker function

MKR

MARKER

NORMAL ZONE

F1 F2 F3 F4 F5 F6

CENTER FREQ

CONV

35

17.1 Movement and Basic F unction of Mar ker

1. By rotating , the mar ker moves.

2. By pushing , the normal marker mode is selected and the marker operates as an independent

F1

marker. The frequency and the le vel at the marker poi nt are disp layed in the lower rig ht side.

3. When is pushed, the delta marker mode is selected, and the reference marker and

F2

the active marker are displayed.

The frequency and the level at the marker points are displayed as follows; Frequency = (freq. at active marker) – (freq. at reference marker) Level = (level at active marker) – (level at reference marker)

4. By pushing , the marker is erased (marker off).

F3

17.2 Normal Peak Search

● Menu of normal peak search When is pushed, the following function menu is displayed.

F4

PEAK

SEARCH

F1 F2 F3 F4 F5 F6

1. When is pushed, the marker moves to the maximum peak position of spectrums.

2. When is pushed, the marker moves to the next highest peak. Fifty or less peaks are available.

3. When is pushed, the function menu is returned to the main menu of marker function.

F1

F2

F6

17.3 Zone Peak Search

● Menu of normal peak search

When is pushed, the following function menu is displayed.

F5

RETURN

36

RETURN

ZONE

CENTER

WIDTH

F1 F2 F3 F4 F5 F6

At the Zone mode, the marker automatically moves to the maximum peak point within the range set beforehand.

When entering this mode, the zone is displayed with thin blue shadow in the spectrum display area. The marker moves to maximum level within this zone at each sweep. The center of the zone can be adjus ted by pressing The width of the zone can be adju sted by pre ssing

F1

F2

Note: The marker does not move in HOLD.

17.4 Change Unit of Marker Level

When is pushed, the unit of the marker level is changed.

If the unit of the reference level is dBμV, dB mV or dBV, it can be changed to

Note: “V/M” is only displayed when the electric field strength measurement is selected

“A/M” is only displayed when the magnetic field strength measurement is selected

F6

If the unit of the reference level is dBm, it can be changed to [dBm] [W].

[dBμV, dBmV, dB V] [V]. If the unit of the reference level is dBμV/m, it can be changed to [dBμV/m] [V/m]. If the unit of the reference level is dBμA/m, it can be changed to [dBμA/m] [A/m].

Each unit change as described above has their own sub-menu for more unit display options. They are shown belo w: [W] [W, mW, μW, nW, pW, fW] [V] [V, mV, μV, nV] [V/m] [V/m, mV/m, μV/m, nV/m] [A/m] [A/m, mA/m, μA/m, nA/m]

18. Save / Load <SAVE/LOAD>

When is pushed, SAVE/LOAD menu is displayed as follows.

SAVE / LOAD

37

PRE

SET

SAVE

MEM

USB

SET

MODE SELECT

LOAD DELETE

DEVICE

PRE

F1 F2 F3 F4 F5 F6

18.1 Selection of Storage Device

1. When is pushed, the built-in flash memory is selected as a storage device. When is pushed, the external USB memory is selected as a storage device.

F4

F5

* Install the USB memory in USB A- plug on the right side firmly. Refer to the figure below.

* Once you disconnect, then reconnect the same or a different USB flash memory drive, the 2650A series will not automatically recognize the new USB drive. After connecting the drive, you must first press the Save/Load key, follow ed by F5 key (USB) in order for the 2650A to "see" the new drive., then proceed as described below.

.

38

18.2 Save Funct ion

SPECT

PARAMM

BOTH

EXECUTE

SET

RETURN

When is pushed, SAVE menu is displayed as follows.

F1 F2 F3 F4 F5 F6

F1

OBJECT

SAVE

1. In this function, the data is stored in the built-in memory or USB memory by CSV format.

The data stored in USB memory can be used with a personal computer as a CSV file. “2650A_csvData” folder will automatically be created and the data will be stored in it as a file.

2. The object to be stored is selected with , or .

F1 F2 F3

SPECT: The current spectrum on the screen is stored. PARAM: The setting parameters are s tored. BOTH: The spectrum and setting parameters are stored as one file. * The selected key will look pushed-in on the display.

PRE

3. When is pushed, SAVE is executed.

F4

The data is stored based on the file name displayed in the active area (refer to “4. Explanation of screen”). As for the file name, refer to “18.3 About File Name”. Up to 200 files can be stored in the built-in memory. Up to 1000 files can be stored in USB memory.

4. Pushing w ill return to the former menu.

F6

18.3 About File Name

1. The file name is attached to the file stored using this function as follows. LABEL-SP001.csv (1) (2) (3) (4)

(1) This is the labe l en tere d from the labe l func tion . Refer to “24.1 Label function.” Note: Symbols and

spaces are not recognized as a file name.

(2) S : The object stored is the spectrum (SPECT). P: The object stored is the setting parameters (PARAM). SP: The object stored is both of spectrum and setting parameters (BOTH).

(3) The consecutive three digit number from “000” is automatically attached if (1) and (2) are same. (4) This is the extension showing CSV format and is automatically attached.

39

2. If the label is not named, “2650A” will be the first part of the file name instead. For example:

RETURN

1

10

100

EXECUTE

CLEAR

1) USB : LOAD

2650A_SP001.csv

3. About file name at the time of storage When SAVE is selected, the file name is displayed in the active area following according to the above labeling convention. When SAVE is executed as it is, the data is stored with that file name. If the file exists in the storage device and is rotate d left before SAVE is executed, those file names are displayed one by one. If SAVE is executed with an existing file name displayed, the data is overwritten on it.

18.4 Load Function

When is pushed, LOAD menu is displayed as follows.

F2

File Search Step

F1 F2 F3 F4 F5 F6

LOAD

DISP

1. When is rotate d rig ht or left, the stored file name is displayed one by one from the specified storage device in the active area as follows.

2) 2650A_SP012.csv

3) 12

1) The storage device in which the file is stored.

(USB: USB memory, MEM: built-in memory)

2) The file name selected.

3) Number attached to file

The files in the specified folder of the storage device are sorted in alphabetical order, and this shows that number.

2. To search files, press , and the file will be displayed in order of the number attached to it in the active area.

F1

The search steps can be adjusted by pressing to search i n steps of 10 files at a t ime or pres sing

F3

to search in steps of 100 files at a time.

F2

Select it according to the number of stored files.

3. When is pushed, LOAD is executed.

F4

* When SPECT is selected, a spectrum waveform is loaded. The setting parameters of loaded spectrum are displayed in the setting parameters display area.

[Refer to “4. Explanation of screen” for details.]

40

* When PARAM is selected, setting parameters are loaded.

Items

Parameters

Center frequency

1 GHz

Frequency span

20 MHz

Reference level

10 dBm

Offset

0.0 dB

Impedance

50 Ω

Sweep time

30 ms

Detection mode

Sample mode (SMPL)

RBW

100 kHz

VBW

30 kHz

Display scale

10 dB/div

RETURN

1

10

100

EXECUTE

* When the spectrum is loaded, the 2650A series enters HOLD state and the current spectrum disappears,

replacing it with the loaded spectrum on main display.

When is pushed right after, the loaded spectrum and a current spectrum are

HOLD/RUN

displayed together.

4. When is pushed, the l oaded spec trum can be cleared on display.

F5

18.5 Delete Function

When is pushed, DELETE menu is displayed as follows.

F1 F2 F3 F4 F5 F6

1. The file name to be deleted is selected from the specified device with , and the active area will

2. When is pushed, DELET E is execu ted. The file displayed in the active area is deleted at this

F3

File Search Step

DELETE

indicate this name. As for the number of search steps, it is the same as “18.4 Load Function”.

F4

time.

3. Repeat step 1 and 2 above to delete more than one file.

18.6 Presetting (Initialization)

(For 2651, refer to “20. EMI test”)

When is pushed, the setting parameters are reset to the preset values as sh own below .

F6

41

COUNT

ANT

PROBE

OBW

CH POWER

ACP

F4

F5

F6

19. Me asuring Function <MEAS>

When is pushed, the following function menu is displayed.

MEAS

F1 F2 F3 F4 F5 F6

E / F

The measuring function can be selected as follows.

F1 F2 F3

CH POWER ----------- Channel power measurement ACP ----------------------- Adjacent channel leakage power measurement OBW ---------------------- Occupied bandwidth measurement E/F ANT ---------------- Electric field strength measurement M/F PROBE ----------- Magnetic field strength measurement FREQ COUNT --------- Frequency counter (factory option)

M / F

FREQ

* Once the measuring function is set, when is pushed, the function menu is directly returned to the last

MEAS

setting of the measuring function. In order to stop the measuring function or to select the other measuring function, push [F6] key (MEAS OFF), then the function menu is returned to the main menu of the measuring function.

* Each of the four functions (Channel power, Adjacent channel leakage power, Occupied bandwidth and Frequency

counter) and the marker function cannot be used at the same time. When is pushed while each of the

MKR

four functions is selected, the measuring function will stop.

Similarly, when the measuring function is selected while using the marker function, the marker function will stop. * Althoug h 501 points can be displayed on the screen, the number of points calculated in the instrument is 1001.

19.1 Channel Power Measuremnt <CH POWER>

The total power in the specified frequency band is measured.

Two modes, TOTAL and BAND, are available.

• TOTAL mode [ By pushing (MODE), TOTAL mode is selected.]

F1

The sum of power in the displayed spectrum specified by center frequency and frequency span is measured.

42

[Setting parameter]

[Measured Value]

[Measuring Mode]

* “CP TOTAL” is displayed in MEAS area on the screen. * The measured value is displayed at the lower right corner on

the screen.

• BAND mode [ By pushing (MODE), BAND mode is selected.]

F1

The sum of power in the band specified by band center and bandwidth is measured.

* “CP BAND” i s display ed in MEAS area on th e screen. * The measured value an d the set ting param eter are

displayed at the l ower part of the screen.

1. By (BAND ENTER) ,

the band center is set .

2. By (BAND WIDTH) ,

the band width is set.

[Measuring Mode]

[Measured Value]

F2

F3

19.2 Adjacent Chann el Leakag e Power Measu rement <ACP>

F2

The adjacent channel leakage power is measured as the ratio of power in the range specified by offset frequency and bandwidth to carrier power. Both leakage power at the upper and lower side are measured.

Furthermore, the method for measurement is selected out of three methods based on the classification of definition of carrier power; total power method, reference level method and in-band method.

• Mode selection and measurement

[ By pushing (MODE), TOTAL, BAND or PEAK mode is selected.]

F1

* “ACP TOTAL”, “ACP BAND” or “ACP PK” is displayed in MEAS area on the screen.

43

* The measured value and the setting parameter are displayed at the lower par t of the screen.

[Measuring mode]

[Setting parameter]

[Measured value]

1. By (ACP OFFSET) , the

offset frequency of adjacent channel is set.

* The offset is from the center frequency of the reference

carrier.

2. By (ACP WIDTH)

band width of adjacent channel is set.

3. By (REFERENCE CENTER) ,

the center

* [F4] is only for TOTAL and BAND mode.

4. By (REFERENCE WIDTH)

the band width of reference carrier is set.

* [F5] is only for BAND mode.

F2

F3

F4

f requency of the reference carrier is set.

F5

,

, the

• Definition of Reference Carrier for each Mode

TOTAL (total power m ethod)

This is based on the sum of power in the displayed spectrum. Th e center frequency of the reference carrier is set by [F4].

BAND (in-band method)

This is based on the sum of power in the specified bandwidth. The center frequency of the reference carrier is set by [F4].

PEAK (reference level method)

This is based on the power of peak on the screen. The center frequency of the reference carrier is automatically set to the peak on the screen.

44

19.3 Occupied Band width Measu rement <OBW >

[Setting parameter]

F3

It is possible to measure the occupied frequency bandwidth defined as the width of points at N(%) of the total power (N% POWER), or a s the widt h of points t hat are X( dB) lower than the pea k level (XdB DOWN).

• N% POWER mode [ By pushing (MODE), N% POWER mode (N%) is selected.]

[Measuring mode]

• XdB DOWN mode [ By pushing (MODE), XdB DOWN mode (X dB) is selected.]

F1

The bandwidth of points at N(%) of the total power is measured.

* “OBW N%” is displayed in MEAS area on the screen. * The measured value is displayed at the lower right corner on the screen.

1. By (RATIO %) , the percentage of the

total power is set.

* Setting range : 80.0 to 99.9%

2. By , the step size of RATIO % can be set to 1% or 0.1%.

[Measured value]

F2

F3

F1

The bandwidth of points that are X(dB) lower than the peak level is measured.

* “OBW XdB” is displayed in MEAS area on the screen.

* The measured value is displayed at the lower right corner on the screen.

[Measuring mode]

[Setting parameter]

[Measured value]

1. By (XdB) , the down level fr om

the peak level is set.

* Setting range : 0.1 to 99.0dB

2. By , the step size of XdB can be set to 1dB or 0.1dB.

F2

F3

19.4 Electric Field Strength Measurement <E/F ANT>

Connecting a dipole antenna (option) to the RF input enables the measurement of the electric field strength.

F4

(Refer to “25.8 Writing of Original Compensation Data” for the details.)

Other than the optional antenna is also available by creating the original compensation data.

45

Connect to

Antenna

[Ant enna connection] [Measurem ent envir onment]

M401 M402 M403 M404 M405

RF INPUT.

M406

2650A series

* Turn the back to the signal source.

[Specifications of dipole antenna (The antenna gain and VSWR are specified at the center of frequency range.)]

Items M401 M402 M403 M404 M405 M406

Type Sleeve Sleeve Sleeve Sleeve ¼ λ whip Sleeve

Frequency range 0.8 to 1GHz 1.25 to 1.65GHz 1.7 to 2.2GHz 2.25 to 2.65G Hz 300 to 50 0MHz 4.7 to 6.2GHz

Antenna gain >1dB >1dB >1dB >1dB >1dB >1dB

VSWR < 1.5 < 1.5 < 1.5 < 1.5 < 1.5 < 1.5

Dimensions 7.5φ ×280mm 7.5φ ×280mm 7.5φ ×210mm 7.5φ ×210mm 8.0φ ×212mm 7.5φ ×152mm

Weight Approx. 58g Approx. 60g Approx. 58g Approx. 56g Approx. 62g Approx. 54g

Reference level

setting range

(except for the

minimum value in

screen shift)

93 to 143

dBμV/m

96 to 146

dBμV/m

99 to 149 dBμV/m

100 to 150

dBμV/m

87 to 137 dBμV/m

109 to 159

dBμV/m

* When M405 is used, the measurement errors will occur due to how to hold of instrument and influence of

human body, because M405 is ¼ λ whip ante nna. The er ror value will be seve ral dB or mo re. In orde r to reduce the error, separa te 2650A series from human body as much as possible.

• Mode Selection and Measurement

By pushing (ANT), the antenna (M401/M402/M403/M404/M405/M406/USER) can be selected

F1

The measurement starts as soon as the antenna is selected.

46

* “E/F M40X” or “E/F USER” is displayed in MEAS area on the screen.

90°

270°

180°

M401 (900 MHz, E plane)

* “USER” is the original compensation data which is created by the user.

(Refer to “25.8 Writing of Original Compensation Data” for the details.)

* The spectrum may exceed the area on the screen depending on the antenna gain compensation.

The unit of amplitude axis automatically changes into [dBμV/m].

* The optimum center frequency and frequency span are automatically set according to the antenna.

In addition, a spectrum other than the frequency range of the antenna is not displayed.

• Directivity of Antenna (reference data)

E plane: X-Y axis (X direction=0°)

0°

* The following are the data when the antenna is connected to RF input directly with no obstacles around.

Actually, the directivity changes due to the human body when handling the unit.

* However, the data of M405 is the reference data which is included the influence of the human body.

Antenna gain vs. Frequency

47

M404 (2.4 GHz, E plane)

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

1.7 1.8 1.9 2 2.1 2.2

Ｆｒｅｑｕｅｎｃｙ（GHｚ）

ANT Gain (dBi)

M402 (1.5 GHz, E plane)

Antenna gain vs. Frequency

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

2.25 2.35 2.45 2.55 2.65

Ｆｒｅｑｕｅｎｃｙ（GHｚ）

ANT Gain (dBi)

M403 (2 GHz, E plane)

Antenna gain vs. Frequency

48

M406 (5.4 GHz, E plane)

2

ANT Gain (dB)

4.95

M405 (horizontal plane)

Antenna gain vs. Frequency

3.5

3

2.5

1.5

1

4.70

5.20 5.45 Frequency（GHz）

5.70 5.95

19.5 Magnetic Field Strength Measurement <M/F PROBE>

The magnetic field distribution can be measured by using the magnetic field probe CP-2S (option).

6.20

F5

49

Item

Specifications

Frequency range

10 MHz to 3 GHz

approx. 0.25 mm

Reference level setting range: maximum

160 to 203 dBμA/m

Reference level setting range: minimum

Measurement error

approx. ±1 dB (probe simple substance)

[Magnetic field probe connection]

The tip of the magnetic field probe CP-2S is made of glass-ceramic board. Take care when handling the probe even though the strength of the glass-ceramic board is durable under normal operation.

“Specifications of magnetic field probe CP-2S” (Refer to the operating manual of CP-2S for the de tails.)

Space resolution (-6 dB)

(depending on objects)

(except for the minimum value in screen shift)

110 to 153 dBμA/m

• Mode Selection and Measurement

By pushing (PROBE), CP-2S or USER mode is selected.

F1

The measurement starts as soon as the probe is selected.

* “M/F CP2S” or “M/F USER” is displayed in MEAS area on the screen. * “USER” is the original compensation data which is created by the user.

(Refer to “25.8 Writing of Original Compensation Data” for the details.)

The unit of amplitude axis automatically changes into [dBμA/m].

* A spectrum other than the frequency range of the probe is not displayed.

50

19.6 Frequency Counter <FREQ COUNT>

This function currently not supported.

20. EMI Test (2651)

20.1 Additional Functi on for EMI Test

Detection mode (Refer to “13.4 Setting of Detection mode”)

F6

By pushing , the detection mode can be set.

POS SMPL NEG QP AV

In the 2651, QP detection and AV detection are added for EMI measurement. POS (Positive Peak) : The s pectrum of the maximum value between the sample points SMPL (Sample) : T he spectr um of the momentary value between the sample points NEG (Negative Peak) : The spect rum of the minimum value between the sample points QP (Quasi Peak) : The spectrum of the quasi peak value between the sample points AV (Average) : The spectrum of the average value between the sample points

As for QP detection, the following characteristics are chosen accord ing to RBW settings.

(based on CISPR16)

RBW charging

time constant

9kHz 1ms 160ms 160ms

F6 SWEEP

dis-charging

time constant

meter

time constant

120kHz 1ms 550ms 100ms

• Preset (Initialization) (Refer to “18. Save / Load”)

In the 2651, the radiated emission measurement and the conducted emission measurement are added to the preset as a default setting. By pushing , the menu is displayed

F1 F2 F3

In the radiated mission measurement, “USER” is selected as an antenna. It is necessary to input the compensation data of antenna beforehand.

NORMAL : The initial parameters of normal mode are set. EMI-C : The initial parameters of conducted emission measurement are set. EMI-R : The initial parameters of radiated emission measurement are set

F6 SAVE/LOAD

51

20.2 EMI Test

The QP detection is usually used in both of the radiated and conducted emission measurements, and the AV detection is usually used in the conducted emission measurement. The measurement time can be shortened by using them in the final measurement to the spectrums narrowed by the PK detection.

Conducted Emission Measurement

The conducted emission discharged through the power supply line is measured. In this measurement, LISN* (Line Impedance Stabilization Network) device is needed.

The connection is shown in the figure below. Please refer to the manual of LISN for details of the connection and notes.

Power Supply

1. Turn on the power of the 2651 after the connection.

2. Set the initial parameters of conducted emission measurement by pushing . The setting parameters are as follows. Center Frequency : 25.5 MHz Frequency span : 50 MHz RBW : 9 kHz VBW : 1 MHz Sweep time : 3 sec Detection mode : Positive peak mode

F6 SAVE/LOAD F2

LISN *

2651

EUT

3. Confirm whether the connection and the operation are correct by supplying the power to the EUT and

measuring.

4. Set the number of times of the sweep in the MAX HOLD mode by operating .

5. Search the frequency of disturbance noise that exceeds the AV or QP limits by using the marker

function.

6. Set the center frequency to the point that exceeds the limits, the SPAN to 2 MHz and the SWEEP to

0.1 sec. And measure the frequency accurately.

F2 CALC

52

7. M oreover, m easure the frequency detected in the above with QP or AV detection, then the SPAN is

200 kHz and the SWEEP is 10 sec.

Radiated Emission Measurement

The electric field strength of disturbance noise that EUT radiates in the air is measured.

Antenna

2651

1. Set the compensation data of the antenna beforehand.

Refer to “25.8 Writing original compensation data” for the details.

2. Turn on the power of the 2651 after connection.

3. Set the initial parameters of radiated emission measurement by pushing

EUT

. The setting parameters are as follows.

F6 SAVE/LOAD F3

Center Frequency : 515 MHz Frequency span : 1 GHz RBW : 120 kHz VBW : 1 MHz Sweep time : 0.3 sec

Detection mode : Positive peak mode

4. Confirm whether the connection and the operation are correct by supplying the power to the EUT and

measuring.

5. Set the number of times of the sweep in the MAX HOLD mode by operating .

F2

CALC

6. Search the frequency of disturbance noise that exceeds the QP limits by using the marker function.

7. Set the center frequency to the point that exceeds the limits, the SPAN to 50MHz and the SWEEP to

30 msec. And measure the frequency accurately.

8. Moreover, m easure the frequency detected in the above with QP detection, then the SPAN is 1MHz

and the SWEEP is 30 sec.

53

EMI standards (selected)

CISPR22 class A

0.15 MHz to 0.50 MHz

79 dBuV

CISPR22 class B

0.15 MHz to 0.50 MHz

66 to 56 dBuV

56 to 46 dBuV

Decreasing linearly with the logarithm of the

CISPR22 class A

30 MHz to 230 MHz

40 dBuV/m

---

Measurement distance 10 m

CISPR22 class B

30 MHz to 230 MHz

30 dBuV/m

---

Measurement distance 10 m VCCI class A

0.15 MHz to 0.50 MHz

79 dBuV

66 dBuV

VCCI class B

0.15 MHz to 0.50 MHz

66 to 56 dBuV

56 to 46 dBuV

Decreasing linearly with the logarithm of the

VCCI class A

30 MHz to 230 MHz

40 dBuV/m

---

Measurement distance 10 m

1000 MHz to 3000 MHz

76 dBuV/m

56 dBuV/m

Measurement distance 3 m

1000 MHz to 3000 MHz

70 dBuV/m

50 dBuV/m

Measurement distance 3 m

FCC part15 subpartB class A

0.15 MHz to 0.50 MHz

79 dBuV

66 dBuV

FCC part15 subpartB class B

0.15 MHz to 0.50 MHz

66 to 56 dBuV

56 to 46 dBuV

Decreasing linearly with the logarithm of the

FCC part15 subpartB class B

30 MHz to 88 MHz

40 dBuV/m

---

Measurement distance 3 m

Limits of co nducte d distur bance at mains ports

Limits of r adiate d dist urbance

Limits of co nducte d distur bance at mains ports

Limits of r adiate d dist urbance

VCCI class B Limits of r adiate d dist urbance

Frequency Quasi Peak Average

0.50 MHz to 30 MHz

0.50 MHz to 5 MHz 5 MHz to 30 MHz

230 MHz to 1000 MHz 1000 MHz to 3000 MHz 3000 MHz to 6000 MHz

0.50 MHz to 30 MHz

0.50 MHz to 5 MHz 5 MHz to 30 MHz

230 MHz to 1000 MHz

3000 MHz to 6000 MHz 30 MHz ~ 230 MHz

230 MHz ~ 1000 MHz

73 dBuV

56 dBuV 60 dBuV

47 dBuV/m 76 dBuV/m 80 dBuV/m

37 dBuV/m 70 dBuV/m 74 dBuV/m

73 dBuV

56 dBuV 60 dBuV

47 dBuV/m

80 dBuV/m 30 dBuV/m

37 dBuV/m

46 dBuV 50 dBuV

--56 dBuV/m 60 dBuV/m

--50 dBuV/m 54 dBuV/m

60 dBuV

46 dBuV 50 dBuV

---

60 dBuV/m

---

frequency

frequency.

Measurement distance 10 m

Limits of co nducte d distur bance at mains ports

FCC part15 subpartB class A Limits of r adiate d dist urbance

Limits of r adiate d dist urbance

3000 MHz to 6000 MHz

0.50 MHz to 30 MHz

0.50 MHz to 5 MHz 5 MHz to 30 MHz

30 MHz to 88 MHz 88 MHz to 216 MHz 216 MHz to 960 MHz over 960 MHz

88 MHz to 216 MHz 216 MHz to 960 MHz over 960 MHz

74 dBuV/m

73 dBuV

56 dBuV 60 dBuV

39.1 dBuV/m

43.5 dBuV/m

46.4 dBuV/m

49.5 dBuV/m

43.5 dBuV/m 46 dBuV/m 54 dBuV/m

54 dBuV/m

60 dBuV

46 dBuV 50 dBuV

---

frequency.

Measurement distance 10 m

(Note: Informatio n provided i n this table serves as a reference only. B&K Precision is not lia ble f or any dam ages d ue to any mistakes in the table.)

21. S creen Control <DSPL>

When is pu shed, the following function menu is dis played.

DSPL

54

Item

Specification

Frequency range

5 MHz to 3.3 GHz

Output Level

-10 dBm ± 1 dB @1 GHz(Fixed value)

Output flatness

±1.5 dB

Output impedance

50 Ω

Output VSWR

Less than 2.0

Output connector

N(J) connector

80

COLOR

COLOR1

ON

F1 F2 F3 F4 F5 F6

BACK LT

BRIGHT

21.1 Setting Scree n Display Color

When is pushed, the color of screen display can be selected.

COLOR1 COLOR2 MONO

• COLOR1 : For norma l use

• COLOR2 : For printing screen

•

F1

MONO : Monochrome

21.2 ON/OFF Switching of LCD Backlight

Use button to toggle the backlight ON or OFF.

F2

21.3 Adjusting Brightness of LCD Backlight

Use to set the brightness. It can be set in the range of 0 to 100.

F3

22. Tr acking Generator Mode (2652A)

22.1 Specification of T.G. Function

55

MODE

SMPL

INT

22.2 Description of I/O Connector

1) Input connector

N (J) connector

Input for an external signal Make sure that the total power of input signals does not exceed +27 dBm.

2) Output connector

N (J) connector It is an output terminal of Tracking Generator.

*Please set to “TG : OFF” to p revent the influence of th e leak from the Tracking Generator in case of disuse of the T.G. function..

22.3 ON/OFF Switching of T.G. Function

When is pushed, the following function menu is display.

SWEEP

MANUAL

F1 F2 F3 F4 F5 F6

AUTO ALL AUTO

DET

TRIG

T.G.

1. When is pushed, T.G. MODE is set.

F6

56

T.G.

NORM

ON

F1 F2 F3 F4 F5 F6

2. Each time is pressed, T.G. output is alternately switched to ON or OFF.

F1

ON

22.4 Normalizing Function

NORM ON: The input level is made flat to the red line on the screen.

1. When is pushed, the same function menu as the previous item is displayed.

2. When is pushed, TG. MODE is set.

3. Each time is pushed, the normalizing function is alternately switched to ON or OFF.

If the normalizing function is switched to ON, “NORM ON” is displayed on the screen.

SWEEP

F6

F2

* If the setting is changed as follows, the normalizing function is automatically turned off.

· The span is expande d. · The center frequency is changed beyond the range normalized.

( When SPAN is changed from FULL SPAN according to center frequency, it is turned off.)

· The magnetic field strength measurement is selected.

· The AUTO tuning is executed. · The power supply is turned off. · The presetting is executed.

* When the scale is 2 dB or 5 dB, the normalizing function does not operate correctly if the spectrum level is not

displayed at a proper position on the screen.

57

23. Storage/Print Screen Image <COPY>

COPY

EXECT

The following function menu is displayed when is pushed.

AREA

WHOLE

F1 F2 F3 F4 F5 F6

PRINT

EXECT

Bmp → USB

COPY

MEM → USB

23.1 Selection of Image Area

When is pushed, the image area to be stored or printed can be selected. WHOLE : the whole screen image is stored or printed. SPECT : only the spectrum display area is stored or printed.

F1

23.2 Print on Printer

When pushing after connecting the printer (option), the area selected in 23.1 is printed.

F2

23.3 Storage into USB Memory

When pushing after connecting USB memory (removable storage) to this unit, the area selected in 23.1 is stored in USB memory in BMP (bit map) format. As for the file name, the number is automatically set and incremented in the form “2650A_001.bmp”. In the case when some characters are written in the label area, the file name will consist of it and the number put automatically such as “LABEL001.bmp”. The folder “2650A_IMG” is automatically generated and these files are stored inside. To change the color of the display before print, refer to “21. Screen Control”.

F3

58

※ Once you disconnect, then reconnect the same or a different USB flash memory drive, the 2650A series will not automatically recognize the ne w USB drive. After connecting the drive, you first must press the

Save/Load, followed by F5 key (USB) in order for the 2650A to "see" the new drive, then proceed with copying data to the drive.

23.4 Transferring Inter nal Data to USB Memory in Lump Sum

When pushing after connecting USB memory (removable storage) to this unit, the data

stored in the internal memory with SAVE/LOAD function are transferred to USB memory in a lump sum. During the transfer process, the screen on the lower right corner will display “Saving”. Wait until it disappears, indicating that transfer is complete, before continuing operation. The folder “2650A_SaveAll” is automatically generated and these files are stored inside.

※ Once you disconnect, then reconnect the same or a different USB flash memory drive, the 2650A series will not automatically recognize the ne w USB drive. After connecting the drive, you must first press the

Save/Load key, followed by F5 key (USB) in order for the 2650A to "see" the new drive, then proceed as normal.

F5

23.5 USB Printer (option)

The 2650A/2651 series enables a hard copy of the screen by connecting a USB printer (option) to USB A plug with the included USB cable.

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* Turn on the power of the 2650A/2651 series unit first. After that, turn on the power of USB printer.

Otherwise, it will not work correctly.

23.6 USB Memory

USB B plug

USB A plug

Printer

USB memory can be used as a removable storage.

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24. U tility Function <UTIL>

BACK SP

OFF

ALWAYS

CONFIG

When is pushed, the following function menu is displayed.

UTIL

LABEL

MENU

BUZZER

CLOCK

F1 F2 F3 F4 F5 F6

Label Function : Enters the label menu for customizing filename.

F1

Menu Off : Turns off menu and active area display.

F2

Buzzer Setting : Sets the condition of the buzzer sound.

F3

Clock Function Setting : Sets the built-in clock.

F4

24.1 Label Function

ABC

F1 UTIL

@%*

+

←

ENTER

→

When is pushed, t he following function menu is displayed.

012

abc

F1 F2 F3 F4 F5 F6

1. The kind of character to be written is selected with to . 012 : 0 to 9 (numeral) abc : a to z (lower case alphabet) ABC : A to Z (upper case alphabet) @%* : Special characters ( ! ” # $ % & ’ ( ) * + , - . / : ; < = > ? @ [ ¥ ] ^ _ ` { Ω } µ)

F1 F2 F3 F4

F1 F4

*Note: Certain special characters may not be recognized or valid as a filename.

2. A block cur sor will be display ed in the labe l display area. By rotating , a number, small letter alphabet, capital letter alphabet or special character will be indicated on the cursor position. Turn the knob until the desired label character is displayed.

3. When is pushed, the cursor position will move right by one character. And the previous character

F6

is set.

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4. When is pushed, the cursor position will move left by one character. To change the

JUN

F5

character, turn the encoder. To delete, press F5 again. Characters previously entered can be deleted by consecutively pushing F5.

5. When finished, press to exit the label menu.

UTIL

24.2 Menu Off

By pushing , the display of the function menu and the active area can be turned off temporarily.

F2

24.3 Buzzer Setting

By pushing , the buzzer sound can be set to beep when keys are pressed or rotary encoder is turned. The following three options are selectable by pressing F3 until the desired option is displayed. OFF : The buzzer is off. ALARM : The buzzer will sound off when an incorrect setting is made.

F3

ALWAYS : The buzzer will sound whenever a key or the rotary encoder is

operated. ※ When the battery voltage becomes low during battery operation, the buzzer will sound. (Even if OFF is selected, it will sound.)

24.4 Setting the Clock

When is pushed, the following function menu is displayed.

YEAR

08

F1 F2 F3 F4 F5 F6

MONTH

DATE

30

F4 UTIL

HOUR

23

MIN

50

ENTER

The year, month, day and time are displayed below the screen. (Refer to “4. Explanation of Screen”)

Set the year, month, day and time when 2650A/2651 series is used for the first time.

The time information is updated even if the power is turned off.

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F3

1. By rotating , the values for a selected parameter (choosen by pressing any butt on between F1 and F5) can be changed.

2. Used to set the year. Two last digits of the y ear are displayed. This can be set from 00 to 99.

Used to set the month. This can be set from 1 to 12.

F1 F2

Used to set the date. This can be set from 1 to 31. Used to set the hour. It is displayed in twenty-four hour format. Values can be set from 1 to 24. Used to set the minute.

F4 F5

3. By pushing , the values which are set from item 2. above are saved. The values are updated only

F6

when this key is pushed.

* The clock function of the 2650A/2651 series is driven by a dedicated LSI, and the power is supplied by a built-in lithium battery.

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25. USB Device Function

25.1 Outline

The 2650A/2651 series is equipped with two kinds of USB connecters; A and B plugs. The A plug is for USB host and is connected to USB devices such as USB memory or printer. The B plug is for USB device and is connected to USB host such as a personal computer. The device function is explained in this chapter.

As for the host function using USB A plug, refer to “23. Storage and print of screen image”.

25.2 How to Connect

When using the USB device, connect with the included USB cable as illustrated

USB A plug

USB B plug

25.3 Installation of Driver

An instrument specified USB driver is neces sary in order to control the 2650A/2651 series with a PC via USB interface, and should be installed in the PC prior to using the software. The driver along with instructions can be downloaded from our website www.bkprecision.com. (Go to the Support section and select download). After the downloaded file is unzipped, the 2650A/2651 series is connected to a PC with the USB cable and then the power is turned on. The detection wizard for the USB driver starts on the PC screen the moment the power of the 2650A/2651 series is turned on, and install it following this wizard.

25.4 Sample Program

Please contact us at www.bkprecision.com to request a sample code which demonstrates how to write a custom program using the commands in the following section.

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B&K Precision 2658A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Before Using the Product

Contents

1. Outline

1.1 Product outlines

1.2 Standard accessories

1.3 Optional accessories

1.4 Overview of all four mo dels

2. Specifications

2.1 Performance

2.2 External view

3. Explanation of Panel

4. Explanation of Screen

5. Function Menu

5.1 List of Functi on Menu

5.2 Menu Tree

6. Preparing for Operation

6.1 Stand

6.2 Connection to power supply

6.3 Battery Charge

6.4 Installation of Battery

7. Center Frequency <FREQ>

7.1 Setting with step keys ( [F1], [F2] )

7.2 Setting with encoder

7.3 Setting with numeric key

7.4 According t o Marke r Posit ion

8. Frequency Span <SPAN>

8.1 Switching Frequency Band

9. Reference Level <REFER>

9.1 Setting of Reference Level

9.2 Change of Unit of Amplit ude Axis

9.3 Setting of Step Size of Reference Level

9.4 On-Off Setting of Offset

9.5 Setting of Offset Level

9.6 Setting of Input Impedance

9.7 Reference Level Setting R ange fo r Each Un it

9.8 Relationship Between Reference Level and ATT/AMP (at dBm)

10. D isplay Scale <SCALE>

10.1 Setting the Func tion Key

11. Resolution Bandwidth <RBW>

11.1 MANUAL Mode

11.2 AUTO Mode

11.3 ALL AUTO Mode

12. V ideo Bandwidth <VBW>

12.1 MANUAL Mode

12.2 AUTO Mode

12.3 ALL AUTO Mode

13. Sw eep Axis / Detection Mode <SWEEP>

13.1 MANUAL Mode

13.2 AUTO Mode

13.3 ALL AUTO Mode

13.4 Setting of Detection Mode

13.5 Setting of Trigger Source

14. AUTO Tuning <AUTO TUNE>

15. Hold / Run <HOLD/RUN>

16. C alculation Function <CALC>

16.1 NORMAL Mode

16.2 MAX HOLD Mode

16.3 MIN HOLD Mode

16.4 AVERAGE Mo de

16.5 OVERWRITE Mode

16.6 SPURIOUS FREE Mode (2658A only)

17. M arker & Peak Search <MKR>

17.1 Movement and Basic F unction of Mar ker

17.2 Normal Peak Search

17.3 Zone Peak Search

17.4 Change Unit of Marker Level

18. Save / Load <SAVE/LOAD>

18.1 Selection of Storage Device

18.2 Save Funct ion

18.3 About File Name

18.4 Load Function

When is pushed, LOAD menu is displayed as follows.

18.5 Delete Function

18.6 Presetting (Initialization)

19. Me asuring Function <MEAS>

19.1 Channel Power Measuremnt <CH POWER>