Anritsu MS2660, MS2650 Service Manual

C onfidential

MS2650/2660 series Spectrum Analyzer

Wireless Measurement Solutions

Service Note

Issue Number: WP-C5AZ02082917-00

Issued by: Takei Koji
Approved by: Katsutoshi Iizuka

ADVICE

CONFIDENTIAL

SOFTWARE VERSION UP

MODEL: MS265** and MS266**
SERIAL: N/A

The software of MS265** and MS266** series Spectrum Analyzer have been updated
several times. The version up includes upgrade of functions and fixing of bugs. (Summary
of the version up is shown in the attached sheets.)
We will distribute latest version of the software to customer service offices with no
charge.
The software will be shipped with two memory cards. The Initial Program Loader is in
512K bytes memory card. (CSCJ-512K-SM-464) Other software (Main,Libs,Meas and
ADB) is in 2M bytes memory card (CSCJ-002M-SM-464)

Update summary of MS265*B, MS266*B Series

ROM Reason of

update*

Date of

update Summary of the update

Main Libs Meas ADB

1.1

1.2

1.3

1.4 1.1 1.4 1.3

1.5 1.2 1.5 1.4

1.6 1.3

1.0

1.0

1.0

1.1

1.2 1.1

1.3 1.2

1.5 1.4

1.0 A 28 Mar 97 The error message “ Range limits 0 999” has been
corrected to “ Range limits 1 999” .

A 3 Apr 97 Stuff on the display cannot be erased by PTA

function.
Some times keys on the panel would not be
controlled when they were pressed during boot up.
TV Monitor offset frequency command was not
supported.

A 11 Apr 97 ACP Inband method showed ERROR at the first

time measurement after power on

A 30 May 97 HP2225 mode printing does not control some

compatible printers .

B 30 May 97 Change into TV Monitor activates TV Sound

automatically.

C 24 Jul 97 PTA manages Text file Read/Write function.
B 25 Aug 97 Printing time has been shorter.

1.7

1.8

1.8 1.3

1.3

1.3

A Some types of 2M bytes SRAM cannot be

formatted.

1.6

1.7 1.5

1.8

1.4 C 9 Sep 97 Peak Search function had been expanded.

B 3 Dec 97 ACP Channel Separation can be measured up to

1GHz.
Default off set frequency at PAL TV Monitor is
changed to 2.46MHz from 2.62MHz.

1.5 A 8 Dec 97 Spectrum is unstable at less than 1MHz of Zone
Sweep.
TVLINE command for remote control is denied
because of improper parameter check.
*RST command for remote control does not
initialize log unit.

* A:Bug B:Change the function C:Add the fuction

Update summary of MS265*C,MS266*C Series

ROM

Reason of

Date of

Main Libs Meas ADB

1.1

1.0

1.1 1.1

update*

C 1 Jul 97 EMC 20dB Band Width calibration at is added.

update Summary of the update

1.1 1.0

1.2

1.1 A 4 Jul 97 Level Cal at QP On changes the trace after the
calibration.

1.2 1.1 1.3 1.2

1.2 1.1

1.3

1.4

1.4 1.1

1.5

1.1

1.1

1.1

1.4

1.5 1.3

1.6 1.4

1.7

1.8 1.5

1.2 A 29 Aug 97 Sweep Time Auto function at Q/P On,

1.4 A 8 Dec 97 Spectrum is unstable when less than 1MHz of Zone

B 26 Aug 97 Printing time has been shorter.
A 26 Aug 97 Some types of 2M bytes SRAM cannot be

formatted.

QP/Average sets sweep time improperly .

C 29 Sep 97 Peak Search function had been expanded.
B 3 Dec 97 ACP Channel Separation can be measured up to

1GHz.
Default off set frequency at PAL TV Monitor is
changed to 2.46MHz from 2.62MHz.

Sweep had been solved.

A 4 Mar 98 TVLINE command for remote control is denied

because of improper parameter check.
*RST command for remote control does not
initialize log unit.

* A:Bug B:Change the function C:Add the fuction

MS265**, MS266** series software installation procedure

This instruction explains how to update MS265*B,C and MS266*B,C series spectrum
analyzer software.
Any calibrations and adjustments are not required after the update.

1. Check that the main power switch on the rear panel is OFF.

1. Loose and remove four screws on the rear panel. (Fig. 1)

2. Loose four screws on both side of the front. (Fig. 2)

3. Pull the cover toward the rear and remove it.

4. Place the short jumper on PMC side. (Fig. 3)

5. Insert the CARD1 into the up side of the memory card slot.

6. Insert the CARD2 into the down side of the memory card slot.

7. Turn the instrument power ON. Then new firmware will be loaded.

The installation will take about 2 minutes.

8. Turn the instrument power OFF when “ Load Complete!!” message is

displayed on the bottom of the screen.

9. Place the short jumper on ROM side. (Fig. 3)

10. Press Preset key and turn the instrument switch ON. Hold the Preset

key until you will see the measurement screen.

11. The firmware update is completed. Place the cover and tight the four

screws on the rear panel. (Fig. 1)

12. Tight the four screws on the side of the front. (Fig. 2)

ADVISORY

CONFIDENTIAL

DISPLAY PROBLEM

MODEL: MS265** and MS266**
SERIAL: MS2651B MT26179 or below, MS2653B MT08581 or below
MS2661B MT28580 or below, MS2663B MT13975 or below
MS2661C MT44079 or below, MS2663C MT21780 or below
MS2665C MT14579 or below

Display on the screen of listed instruments might be disturbed when a handy mobile
telephone is used in front of the instruments. RF signal from the telephone affects
synchronous signal of the driver circuit of the LCD. The LCD driver which includes the
synchronous circuit is placed in the front panel assembly. Therefor the circuit picks up the
RF signal easily. To solve the problem, the synchronous circuit is separated from the LCD
driver and placed in the CPU PCB. This solution requires replacement of two PCBs, A02
FRONT BOARD and A03 CPU. If your customer complains about the problem above,
please replace the two PCBs A02 FRONT BOARD and A03 CPU. Anritsu will provide
the PCBs with no charge for the complaint. The parts number of the new PCBs are below.
All models use same PCBs. Replacement of CPU requires compensation of frequency
response.

322U14223 A02 FRONT BOARD
322U14225 A03 CPU

ADVISORY

CONFIDENTIAL

POWER SUPPLY COMPATIBILITY

MODEL: MS265** and MS266**
SERIAL:

Power supply unit of MS265** and MS266** series has been changed. This redesigned
power supply 34Z112975 is meeting EN610000-3-2:1995 Harmonics Current Emission.
The new power supply can be replaced instead of old type power supply 34Z106720. On
our basic plan, an old type defective power supply should be replaced with an old type
power supply. But when 34Z106720 is not stocked, 34Z112975 power supply will be
delivered instead of 34Z106720 power supply. That case, the exchange price of
34Z106720 power supply will be applied for the replacement. The other hand 34Z112975
power supply must be replaced with 34Z112975. 34Z106720 power supply should not be
installed instead of 34Z112975. Type of power supply and satisfied specification is shown
below.

34Z106720 Power Supply EN55011:1991, Group 1, Class A
EN50082:1992

34Z112975 Power Supply EN55011:1991, Group 1, Class A
EN50082:1992
Harmonic Current Emission EN61000-3-2:1995

CONFIDENTIAL 26,Feb.99

POWER SUPPLY COMPATIBILITY (revised)

MODEL: MS265** and MS266**
SERIAL:

The information in the service note A-PCC02077 was not correct information about
compatibility. The power supply 34Z112975 is not compatible with 34Z106720.
So that 34Z106720 should be replaced by 34Z106720 not 34Z112975.
Now we have some stock of 34Z106720 for urgent repair.

ADVISORY

CONFIDENTIAL 8,Jun.99

SOFTWARE BUG

MODEL: MS2651B, MS2661B and MS2663B
SERIAL: See attached list

MS2651B, MS2661B and MS2663B with software issue number 1.50 has problem that
can choose only US TV and Japan TV.
This problem will be occurred when option 21 or 24 is installed.
Listed instruments require software version up when install option 21 or 24
APC will supply memory cards for version up. Each service center should order the

ADVISORY

memory cards when install option 21 or 24 to the listed instruments locally.
The version up does not require both calibration and adjustment.

List for products shipped with software issue number 13

MODEL ORDER NUMBER SERIAL NUMBER

ＭＳ２６５１Ｂ １－０７８１－３５３９７ ＭＴ４４２８８

１－０７３２－２６５１３ ＭＴ４４３８８

１－０７３２－２６５１３ ＭＴ４４４８８

１－８４１０－６４４１５ ＭＴ４４５８８

１－０７２９－２０１２２ ＭＴ４４６８８

１－０７４２－１９２１９ ＭＴ４４７８８

１－０７４２－１９２１９ ＭＴ４４８８８

１－０７８３－１９６２５ ＭＴ４４９８８

１－３１６７－６１７０２ ＭＴ４５０８８

１－０７３２－２７３６６ ＭＴ４５１８８

１－０７３２－２７５２８ ＭＴ４５２８８

１－０７３２－２７５２８ ＭＴ４５３８８

１－０７２８－００７６３ ＭＴ４５４８８

１－０７２８－００７５５ ＭＴ４５５８８

１－０７８１－３６０１６ ＭＴ４５６８８

１－０７８１－３６０１６ ＭＴ４５７８８

１－０７１５－１７３３２ ＭＴ４５８８８

１－８５１７－０６６４９ ＭＴ４５９８８

１－５２３１－２３３１１ ＭＴ４６０８８

１－０７８１－３５８３４ ＭＴ４６１８８

１－０７８１－３５８３４ ＭＴ４６２８８

１－０７３２－２８４４３ ＭＴ４６３８８

１－０７３２－２８４４３ ＭＴ４６４８８

１－０７３２－２８４４３ ＭＴ４６５８８

１－０７３２－２８４４３ ＭＴ４６６８８

１－０７３２－２８４４３ ＭＴ４６７８８

１－０７３２－２８４４３ ＭＴ４６８８８

１－０７３２－２８４４３ ＭＴ４６９８８

１－０７３２－２８４４３ ＭＴ４７０８８

１－０７３２－２８４４３ ＭＴ４７１８８

１－０７８１－３６５７１ ＭＴ４７２９１

１－０７２９－２０２６２ ＭＴ４７３９１

１－０７２９－２０２６２ ＭＴ４７４９１

１－０７２９－２０２６２ ＭＴ４７５９１

１－０７８１－３６５５５ ＭＴ４７６９１

１－５１５１－４２３３６ ＭＴ４７７９１

ＭＳ２６６１Ｂ １－０７８１－３５６９９ ＭＴ３３８８８

１－０７８１－３５６９９ ＭＴ３３９８８

１－０５１３－３９１４５ ＭＴ３４２８８

１－３１６７－６３０６３ ＭＴ３４３８８

ＭＳ２６６３Ｂ １－０７３２－２５８９４ ＭＴ１５４８８

ADVISORY

8 November 1999

MISS ASSENBLING OF EXTENDER CABLE

MODEL: 342J109640 EXTENDER CABLE for MS2651A/B/C,/61A/B/C
SERIAL: NON

The extender cable menti oned abov e can not be use d for 3GH z conv er ter due to mis s
assembling.
Therefore 342U107538 PCB of the extender cables that have been delivered already,
should be modified as below.

Short pin 1B and pin 2A with a wire.

ADVISORY

1 1 August 1999

Exchange module program for old type Spectrum Analyzer

MODEL: MS2651A/MS2661A/MS2653A/MS2663A
SERIAL:

The exchange modules in the table attached are some of Module Price List for
MS2651B/MS266**.
These modules can be used for old type Spectrum analyzer like
MS2651A/MS2661A/MS2653A/MS2663A too.
So we would like to apply and offer exchange module system for these items only,
although you use it for old type Spectrum analyzer.
If you want exchange one in the table, please place an order as exchange.

MS2651A/61A/53A/63A Exchange Module Price List

Assembly Model Assembly Name Drawing

Number

322U12876 A01 MOTHER BOARD 34Y106673 N/A 11,900 No Yes
322U12853 A04 PMC/GPIB 34Y106693 N/A 18,200 No Yes
34Y112923 A05 SCAN/AD 34Y112923A 33,600 67,200 No Yes
322U12847 A06 IF 34Y110188 39,200 72,800 No Yes
322U12849 A08 LOCAL-A 34Y106679 35,000 65,000 No Yes
322U12930 A09 OPTION BASE 34Y106684 N/A 11,900 No Yes
34Y108179 3GHZ CONVERTER 34Y108179 119,000 204,000 No Yes
34Y108179B 3GHZ CONVERTER 34Y108179B 133,000 228,000 No Yes
34Y110446 A13 MICRO CONVERTER 34Y110446 36,400 67,600 No Yes
34Y110447 A14 1ST LO AMP 34Y110447 N/A 36,400 No Yes
329H13302 8GHz YTF/SW 329H13302 74,200 127,200 No Yes
339H37825 8GHz MIXER 339H37825 N/A 32,200 No Yes
339H40998 HR S-ATT 339H40998 24,500 49,000 No Yes
332U36333 A0501 HI-SPEED AD 34Y106688 N/A * No Yes OPTION 04
322U12979 A0901 TRIG/GATE 34Y106695 N/A * No Y es OPTION 06
322U12981 A0902 AM/FM MONITOR 34Y106699 N/A * No Yes OPTION 07
339H37893 3GHz PRE AMP ASSY 339H37893 29,400 * No Yes OPTION 08
34Y106692B A04 PMC/CENTRONICS 34Y106692B N/A * No Yes OPTION 10
34Y113473 A0904 QP DET 34Y113473 N/A * No Yes OPTION 12.13
322U13502 A04

PMC/GPIB/PARALLEL
322U12983 A0903 TV MONITOR 34Y106697 N/A * No Yes OPTION 15
34Y110293 TG UNIT 34Y110293 87,500 * No Yes OPTION 16

34Y112325 N/A * No Yes OPTION 14

Exchange
Price JPY

Full Price

JPY

Export License

Necessity

Compatible with

earlier version

Remarks

* Same as local sales price

ADVISORY

7 February 2000

MEMORY CA RD WRI TIING SOFTWARE FOR MS26**

We have distributed memory card writing software for MS2650/60 series.
However, the software does not run with the PC depending on the “config.sys”.
To use the software correctly, you should change the “config.sys” as follows.

1. Press F8 when booting Windows 95 and choose COMMAND PROMPT ONL Y mode.

2. Save current “config.sys”on a floppy disk.

3. Change the “config.sys” as shown below.

4. Reboot the PC and choose COMMAND PROMPT ONL Y mode ag ain.

5. Now t he so ftw are will r un co rre ctly.

6. After memory card writing is completed, replace the “config.sys” with the one saved at the step 2.

Contents of the “config.sys”.
BUFFERS= 20

FILES=30
SHELL=C:¥windows*1¥COMMAND.COM

DEVICEHIGH=C:¥windows¥command*1¥ANSI.SYS

*1: It should be the same directory as the required file is existing.

Confidential

ADVISORY

22 November, 2000

Software bug

MODEL : MS26 61C / 63C / 65C Spectrum Analyzer

There are following bugs in a MS2661C / 63C / 65C Spect r um Ana ly zer.
When the same fault occurs in a customer, Please inform to us in details.

１．Phenomenon

Rev. no. ROM Ver. (Main)1.52 (Libs)1.50 (Meas)1.54 (ADB)1.51
Updating Date : 12 Aug.1999

◇The C/N measured value disperses in compar ison with the other companies product.

The phenomenon occurs w hen it was measured by the spot mar ker [ dB c/ Hz ] .

Rev. no. ROM Ver. (Main)1.53 (Libs)1.50 (Meas)1.54 (ADB)1.53
Updating Da t e : 6 Oct.1999

◇The “ 0 divide “ error occurs

when the frequency ranging over the Band 0 and Band 1- is s et .
Example

Frequency setting : Start 2Ghz Stop 4Ghz

Rev. no. ROM Ver. (Main)1.53 (Libs)1.50 (Meas)1.55 (ADB)1.53
Updating Date : 20 Oct.1999

◇The Channel Power A verage Counter sometimes may not be reset .

Rev. no. : ROM Ver. (Main)1.54 (Libs)1.50 (Meas)1.56 (ADB)1.53
Updating Dat e : 6 Nov.1999

◇We pushed the copy key after the marker value comes down dramatically.

Rev. no. : ROM Ver. (Main)1.54 (Libs)1.50 (Meas)1.57 (ADB)1.53
Updating Dat e : 23 Jun.2000

◇The maker signal level rises 2dB over

when the "TSAMP" comman d is executed in the MS2663C 3GHz pre amplifier option.

The "TSAMP" is an exclusive command.
The "TSAMP" command is t he R F band section sweeps with the pr e amplifier ON
and the micro band section sweeps with the pre ampl if ier OFF
in a multi band sweep.

Confidential

ADVISORY

8 December, 2000

Vibration of Fan

MODEL : MS2651/61 53/63 65/67 Spectrum Analyzer

The following faults happened in a MS26** series Sp ectrum Analyzer.
Please adjust it if the same problem occurs.

１．Phenomenon
The vibration of the FAN (34 Z112975 for power supply unit ) is big.

Because the tightening of the screw was too strong (0.5kgfcm)
the vibration was transmitted to the package.

put the lock paints

2 . solution
Loosening (0.1kgfcm) the tightening of the scr ew and put the lock paint s.

CCoonnffiiddeennttiiaal

AADDVVIISSOORRYY

Sep. 26, 2001

Drop of a Tilt handle Screw

The information in this article applies to:

• MS2663 seriesSpectrum Analyzer

• MS2683A Spectrum Analyzer

• MS8608A / 09A Digital Mobile Radio Transmitter Tester

• MS8901A Digital Broadcast Signal Analyzer

Symptoms

The screw, which has stopped the tilt handle is dropped and installation becomes unstable.

It is danger when a tilt handle dropped.

l

Cause

The installation screw for the tilt handle loosened.
Although fastened with standard torque (12.6kg ~ 17kgf.cm), in order that a handle is a movable

part, so it loosened. Rock Paint had not painted.

Resolution

Lock tightness No.262 are applied to a screw.

Drop of a Tilt handle Screw
Lock tightness No.262

Power supply unit problem

The information in this article applies to:

z MS2651*/2661* Spectrum Analyzer
z MS2663*/2665* Spectrum Analyzer
z MS2667*/2668* Spectrum Analyzer

Symptoms

A fuse becomes open and it stops operating.

Cause

A diode may break due to the difference in the transformer characteristic.

CCoonnffiiddeennttiiaal

AADDVVIISSOORRYY

Dec. 04, 2001

l

Resolution

The undermentioned photograph is an improvement power supply unit (With a red mark).
On occasions when the power supply unit before improvement breaks down, (no red mark)
please return to ATSUGI factory immediately.
It exchanges free of charge.