Kenwood SG-5260 User manual

C PRINTED IN JAPAN B63-0084-00(N)
26405
KENWOOD
FM-AMSIGNALGENERATOR
SG-5260
INSTRUCTIONMANUAL
KENWOODCORPORATION

CONTENTS
1 . OUTLINE and FEATURES 3
2. SPECIFICATIONS 4
2-1CARRIER FREQUENCY 4
2-2 RF OUTPUT 4
2-3 FM MODULATION 5
2-4 AM MODULATION 5
2-5 OTHER FUNCTIONS 6
2- 6 OPTIONS 6
3. PANELEXPLANATION 7
3- 1 FRONT PANEL 7
3- 2 REARPANEL 1 5
4. OPERATINGPROCEDURES 17
4-1 FREQUENCY SETTING 1 7
4-1-1 NORMAL SETTING 1 7
4-1-2DIRECTSETTING 1 7
4-1-3STEPSETTING 1 9
4-2 OUTPUT LEVELSETTING 2 0
4-2-1 NORMAL SETTING 2 0
4-2-2DIRECTSETTING 21
4-2-3DISPLAY UNIT CHANGE 21
4-2-4STEPSETTING 2 2
4-2-5LEVELPRESET FUNCTION 2 2
4-3 MODULATION SETTING 2.3
4-3-1 FM MODULATION SETTING 2 3
4-3-1-1 Normal Setting 2 4
4-3-1-2 DirectSetting 2 4
4-3-1-3 Preset Setting 2 6
4-3-2 AM MODULATION SETTING 2 6
4-3-2-1 Normal Setting 2 7
4-3-2-2 DirectSetting 2 7
4-3-2-3 Preset Setting 2 7
4-3-3 SIMULTANEOUS FM/AM SETTING 2 7
4-4 ADDRESS SETTING 2 8
4-4-1 NORMAL SETTING 2 8
4-4-2DIRECTSETTING 2 8
4-5 ADDRESSMEMORIZATION 2 9
4-6 OUTPUT IMPEDANCETOGGLING 3 0
4- 7 ADDITIONALFUNCTIONS 3 0
4-7-1 AF FUNCTIONS 3 0
4-7-2 ADDRESSROTATIONFUNCTION 31
4-7-3 SECOND FUNCTIONS 3 2
4-7-4 OTHER FUNCTIONOFSTOKEY 3 2
4-7-5 BACK-UPFUNCTION 3 2
5 . MAINTENANCE 3 3
5- 1 FUSE REPLACEMENT 3 3
5-2 VOLTAGE CHANGE 3 4

1. OUTLINE and FEATURES
The SG-5260 isan FM-AM standardsignal generator thatcoversthe frequency
band from 10kHz to 260MHz. The output level canbesetin0.1dBsteps from
-20dB# to 132dB//.
All setvaluesare easily inputbyusing numeric keys ortherotary encoder.
Thesetcontentscanbe memorized inupto100addresses.
Controlisalsopossibleviathe GP-IB (factory option)allowingtheunitto
be used effectively for both designand manufacturing purposes.
• Covers the frequency range from 10kHz to 260MHz ina superb stableand
accurateway.
• Superb sett ing resolut ionof 100Hz.
• Content s offrequency, modulat ion, output level sett ingscanbestored
in upto100addresses making it easy torecal1the sett ings when required.
•AFfunctional lows one-touch deviation measuring.
•Settingis faci1itated by ei ther direct setting using numeric keys orby
normal setting usingcursorandrotary encoder.
•Selectable modulat ion signal. Select between internal osci 1 lator or
externally input signal.
• Operat ional ease secured byfunctiontopreset f requently used output
levels and second functionselectable,presetstandard modulat ion.
•Providedtheoptional RT-101 remote contro1leris connected, control
from a distance becomes possible.
• Designed for automat ionof measuring via GP-IB function (factory opt ion).
3

•2. SPECIFICATIONS
2-1 CARRIER FREQUENCY
Possible frequency range : 10kHzto 260MHz
Display : 7 digits
Resolution : 100Hz
Reference signal accuracy : ±2x 10~6
Stability : ±2x 10"7/week
2-2RF OUTPUT
Output level range : — 20dB// to132dB//openended
—133dBm to 19dBm, 50Q termination
-134. 8dBm to 17. 2dBm, 75Q termination
EMF dB//<—*dBm selector switch : Yes
50Q«—»75Q selector switch : Yes
Display : 4 digits
Resolution : 0.IdB
Reference level accuracy : ±ldB (RF: 400kHzto 260MHz)
±1. 5dB (RF: 10kHzto 400MHz)
Attenuator accuracy : ±ldB (at20dB/zto 132dB/i)
±1. 5dB(at-10dB/ito20dB^)
±2dB (at-20dB#to— lOdB/x)
Signal source impedance: 50Qor75Q,
VSWR 1.2or less
(RF: 10kHzto 130MHz with 75Q)
Spurious output : Harmonics; Below— 30dBor less
Sub-Harmonics; Below—35dBor less
(RF: 10kHzto 33MHz)
Others; Below-50dBor less
(RF: 33MHz to 260MHz)
Residual FMcomponent: 80dBor more
/Deviation: 75kHz,Band:300Hzto20kHz\
IDe-emphasis: 50 /is, RF: 76MHz to 110MHz/
Residual AMcomponent: 60dBor more
/Modulation: 30X,Band: 50Hz to15kHz\
\RF: 400kHzto 1. 7MHz /
4

2-3Fl MODULATION
Frequency deviation : 0 to 300kHz/RF: 3MHz to 32. 9999MHz\
\65MHzto260MHzI
0 to 150kHz(RF: 33MHzto 64. 9999MHz)
0 to 30kHz(RF:300kHz to 2. 9999MHz)
RFX10X (RF: 300kHz or less)
Display : 3 digits
Resolution : 0. 1kHz(at 0 to 99. 9kHz)
1kHz(at100kHz or more)
Accuracy :Maximum display value±5X
(RF: 3MHz to 260MHz, AF:1kHz)
Internal modulationfrequency : 400Hz±3X,1000Hz±3%
Distortion factor : 0. 02X (RF: 10. 7MHz, 76MHzto 110MHz)
0.1% (RF: Other ranges)
/Demodulation band:300Hz to 20kHz\
De-emphasis : 50/is
\75kHz deviation, AF:1kHz/
[External modulation]
Frequencyresponse : 20Hz to lOOkHz + ldB
(1kHz reference, RF:76MHzto 110MHz)
20Hz to 100kHz±l. 5dB
(1kHz reference, RF: Other ranges)
(Separation: 60dB or more at1kHz)
Input impedance : Approx.lOkQ, unbalanced
Inputvoltage : Approx. 3Vp-p
Incidental AM: 0. 5% or less at 75kHz deviation
2-4 AM MODULATION
Modulationamplitude : 0 to 99. 9$
(Modulationamplitude is compatible with
an open end with upto 124dBfi output
level. )
Display : 3 digits
Resolution : 0.1%
Accuracy :Maximum displayvalue ±5% at0 to80%
modulat ionamplitude
5

Internal modulationfrequency : 400Hz±3X,1000Hz±3X
Distortion factor : 0.IX/RF: 400kHz to 1. 7MHz \
Demodulation band: 50Hz to 15kHz
\Modulationfrequency: 1 kHz /
IX (RF: Other ranges,30%modulation)
* However, except to beat components
[External modulat ion]
Frequencyresponse : 20Hz to 20kHz, ±IdB
/1kHz reference, )
\RF: 400kHz to 1. 7MHz range/
20Hz to 10kHz, ±1. 5dB
(1kHz reference, RF: otherranges)
Input impedance : Approx. lOkQ, unbalanced
Inputvoltage : Approx. 3Vpp
Incidental FM: Less than 75Hz for 3OX modulation by
1kHz modulat ionfrequency
2-5 OTHER FUNCTIONS
Preset keys :AM; 30X,60X, 99. 9%
FM; 3. 5kHz, 22. 5kHz, 75kHz
Output level; 4 Level ranges selectable
Memories : 100 Points
Power requirements :AC 100V/120V/220V+10X (Max. 250VAC)
50/60Hz
Approx. 57W
Dimentions :430(W)x 100 (H) x 380 (D) mm
Weight : Approx. 11. 5kg
Within specification
temperature and humidity : 10°C to 35°C, 85XRHor less
Accesories : Power cord 1
Output cable 1
Replacement Fuses 1
Instruction manual 1
2-6 OPTIONS :The SG-5260 canbe remote controlled by
the remote controller RT-10L
6

3. PANELEXPLANATION
3-1 FRONT PANEL
Fig. 1
(D POWER ONm /OFFM switch
Press the switch to turn power ON. Pressagain to turn power OFF.
(D ADDRESS Display
Indicates the address.
(3) SEOKey
Press this keyto select sequent ial recal1 mode (during this mode" is
displayed inthe lower right corner ofthe address display). Press the
keyagain to return to normal mode.
In the sequent ial recal 1 mode,the contents set inthe address are output
without furtherprocessing.
(4) STO (store) Key
I f this key is pressed together with theENTkey@ after the frequency,
level, and modulat ion setting, the set values are stored in the memoryof
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thedisplayedaddress.
(D RTN (return)/BIGIN Key
RTN : Duetothe address rotation function, the unit returns tothe
begin address.
BIGIN :Whenthe2ndF key© is pressed and second function mode activated,
the begin address canbe set by pressing this key.
© RCL (recalI VENDKey
RCL : If this key is pressedduring normal mode,the datastored inthe
memory of the currently displayedaddress is output.
END:When the 2ndF key© is pressed and second function mode act ivated,
the end address canbe set when this key is pressed.
CD Address Setting Keys
Use the keys to increase or decrease the address in1 or 10-step
increments or decrements. Usethe keys onthe left for 10-step changes
and use those onthe right for 1-step increase or decrease. The address can
beset in100 steps from 0~99.
® EXTFMMODULATION Input Terminal
Inputterminal for external modulation signal for FM signal. Input level is
3 Vp-p, input impedance lOkQ, maximum imput voltage is 10V (DC4-AC peak).
(D EXTAMMODULATION Input Terminal
Inputterminal for external modulat ionsignal for AM signal.
Input level is 3 Vp-p, input impedance lOkQ, maximum inputvoltage is 10V
(DC + ACpeak).
© EXTHIGH/LOW Indicators
The HIGH andLOW indicators indicate whether the input level of the external
modulat ions ignal istoo high ortoo low. The valuedisplayed atthe
modulation display when both HIGH andLOWare turnedoff, becomes the
modulat ionvalue.
8

© MODULATION Display
3-digit indication of AM/FM modulation.
© FM/AM Modulation UnitIndicators
AM modulat ionis showed in%. FM frequency deviationisindicated by kHz.
© GP-IB (remote/1 oca I) Key
This key only works withunits having built-in GP-IB functions.
© FM MODULATIONKey
Key to turn ON/OFF FM modulation.
© EXT/75kHz Key
EXT : Press this key when an external FM modulation signalis to tbe used.
75kHz : When the 2nd F key (§)is pressed and second function mode activeted,
FM frequency deviationisset to 75kHz when this key is pressed.
© 1 kHz/22. 5kHz Key
1kHz :TheFM modulat ionsignal becomes the 1kHz internal modulat ion
signal.
Fig. 2
9

22.5kHz :Whenthe2ndF key© is pressed and second funct ion mode
act ivated, FM frequency deviat ion is set to 22.5kHz when this
key is pressed.
© 400Hz/3. 5kHz Key
400Hz :TheFM modulatio signal becomesthe400Hz internal modulation signal.
3.5kHz: Whenthe2ndF key© is pressed and second funct ion mode
activated, FM frequency deviation isset to 3. 5kHz when this keyis
pressed.
© AM Modulation Key
Key to turn ON/OFFAM modulation.
® EXT/99. 9% Key
EXT : Press this key when an external AM modulation signal is tobe used.
99.9% :When the 2ndF key© is pressed and second funct ion mode activated,
AM modulationamplitude isset to 99. 9% when this key is pressed.
® 1 kHz/60% Key
1kHz: TheAM modulat ionsignal becomes the1 kHz internal modulation signal.
60% :When the 2ndF key© is pressed and second funct ion mode act ivated, the
the AM modulat ion amplitude isset to60% when this key is pressed.
© 400Hz/30K Key
400Hz :TheAM modulat ions ignal becomes the 400Hz internal modulat ion
signal.
30% :When the 2ndF key© is pressed and second function mode activated,
the AM modulat ionamplitude isset to30% when this key is pressed.
@>MODULATIONKey
Key to turn off modulation. If both FMandAM modulation are in use,they
can be turned off simultaneously.
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Fig. 3
© 2nd F Key
When this key is pressed, the unit operatesaccording tothe functions
indicated byred letters below the keysinterconnectedwith this key.
® MODULATION display selector Key
If both FMandAM modulat ion arein use, this keyto select theAM
modulat ion ampli tude orFM frequency deviat ion which wi11 be indicated on
the MODULATION display.
© FREQUENCY Display
Displays the frequency.
© FREQ (MHz)/STEP Key
FREQ (MHz): For directly setting the frequency by using the numeric keys ®,
Thefrequency unit canbe changed as follows. Whenthe FREQ
(MHz) key is pressed andtheENTkey@ is pressed after the
frequency has been entered by using the numeric keys, the unit
becomes MHz. Conversely, when thekHzkey© is pressed, the
unit becomes kHz.If this key is pressedagainbefore either
the ENTkeyorkHzkey ispressed, the frequency setting returns
to the one valid before the input.
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STEP :Whenyou want to step upor step down the frequency ata certain
interval, set the interval as fol lows. Press the 2ndF key©.
Press this STEP keyand input the stepvalue ofthe frequency by
using the numeric keys. Finally press the ENTkey®.
@ LEVEL (dBVSTEP Key
LEVEL (dB): Used when the numeric keys are used for directlysetting the
RF output level. The sett ing procedure is the same as for the
FREQ(MHz) key® setting.
The set unit isdBu when"dB f± " 1 ights onthe 1 eve 1 unit
display anddBm when "dBm" 1ights.
STEP : Whenyou want to step upor step down the leve1 ata certain
interval, set the interval as fol lows. Press the 2ndF key©,
then press this STEP keyand input the stepvalue ofthe LEVEL
byusing the numeric keys. Finally press the ENTkey@.
® ADDR (address) Key
Used whenthe numeric keys are used for directsetting of the address. The
sett ing procedure is the same as fortheFREQ key® sett ing.
® MOD (modulation) Key
Used when the numer ic keys are used for directsett ing ofthe modulat ion.
The setting procedure is the same as fortheFREQ key© setting.
@ Numeric Keys
Used when sett ingdata. Whena numeric key aloneispressed, the last digit
of the address changes.
© AFKey
Used for measuring the deviation.Press thekey once more to cancel this
function.
© kHzKey
Whenthe frequency sett ingshould be kHz,press this button instead ofthe
ENT key@.
12

Fig. 4
© BSKey
If a wrong value Is Input, the digits canbe cleared onebyone starting
from the last input by pressing this key.
(§) ENTKey
When theset value has been input by using the numeric keys, the final
setting including the set value unit is completed by pressing this ENTkey.
If theENTkeyisnot pressed, the key's LED continues flashing. If no
key is pressedduring the time theLED flashes, the displayvaluereturns to
thevalue valid before the input.
© CURSORKey
If the^ keyor• key is pressed, the cursor moves one step tothe left
or right. IftheA A keyor• • keyis pressed, the cursor moves
between theMODULATION,FREQUENCYand LEVEL displays.
©Rotary Encoder
Depending onthe position ofthe cursor, the rotary encoder canbe used to
decrease or increase the displayed MODULATION,FREQUENCYand LEVEL values.
13

@) STEP (FREQ) Key
Used to decrease or increase the frequency.
@ STEP (LEVEL) Key
Used to decrease or increasethe output level.
<§) LEVEL Display
Indicates the output level.
m LEVEL PRESET (A, B,C,D) Keys
Output level memorycanbe stored in these 4 keys.
©LevelUnitSelector/Output Impedance SelectorSwitch
Level unit selector:
To select the output level unit.
EMFdB/z:Using1uV open voltage asthe reference, the output level is
expressed asEMFdB//.
dBm: Using 1 mW,50Qor75Q load asthe reference,the output level
is expressed asdBm.
Output impedance selector:
Whenthe2ndF key© is pressed and second function mode
act ivated, the output impedance canbe se lectable (50Qor
75Q) by pressing this key.
® RF output terminal
RF output terminalwith an impedance of50Qor75Q.
If external electric power isapplied by mistake, the protectionfunction
works to turnoff the output. However, this terminal must notbe applied
with 50Wor higher power.
14

3-2 REAR PANEL
© CordWinder
Wind theAC cord round this winder forstorage.Italsoacts as legs when
theunitisstored ina vert ical posit ion. However, avoid using the SG-5260
placed ina vert ical position.
@ Heat Sink
During cont inuous operat ion the heat sink becomes hot. Donot place near
objectsadverselyaffected by heat. Place the unit ina wel1-ventilated
locat ion during operat ion.
© RANGEOUTPUT Terminal
Can be set by pressing theSTOkey (4) and the numeric key marked "3".
Whenthe frequency display shows 35--1, the output is above the35MHz range
and the vo1tage -f5V. Whenthe display shows 35--0, the levelis above
the 35MHz range and0V is output.
© REMOTECONTROL Terminal
Terminal for remote control ofthe functionsindicated onthe frontpanel.
Connect theoptional RT101 remote controller to this terminal.
Fig. 5
15

©VoltageSelector/Fuse Holder
Voltage selector: The vo1tage setting when shipped from the factory is
indicated bya cirkel markintheSET column ofthe
ratings platelocated ontopof this combined voltage
selector and fuseholder. Make surethat theAC mains
outlet prov ides a voltagethat meets thepower
requirements of this unit before connect ing thepower cord
to the mains.
Refer tothe"MAINTAINANCE" section in this manual
if the voltage of this unit istobe changed.
Fuse holder : The unit's AC mains protectionfuse is placed inthe
holder. In areaswith 100V,120Vpower supply, a 0. 5A
glass tube fuse(slow blow) should be used. In areaswith
220V, 240Vpower supply, a 0.3A glass tube fuse(slow blow)
should be used. Refer tothe"MAINTAINANCE" section if
thefuse hastobe replaced.
® AC Inlet
Receptacle forACpower cord. Usethepower cordprovidedwith this unit.
(D Optional concealing panel
A panel used to conceal themount inghole forthe GP-IB (factory option)
connectionterminal is provided.
18

4. OPERATING PROCEDURES
Theuni1 outputs theset valuesdisplayed onthe variousportions ofthe
d isplay via theRF output terminal. The displayconsists of3 portions:
MODULATION,FREQUENCYand LEVEL. Howto set the variousdisplayportions is
described below.
4-1 FREQUENCY SETTING
4-1-1 NORMAL SETTING
Enter the value by using theCURSORkey (§) and rotary encoder ®.
1) Whenthe^^or• • key is pressed, the cursorthat 1 ights inthe
upper portion ofthe display shifts between theMODULATION,FREQUENCY
andLEVEL portions. Movethe cursor tothe portion where the
frequency digits are displayed.
2)Press the^ or• keytomovethe cursor tothe digit you want to set.
3) Whenthe rotary encoderis rotated, the digit under the cursor starts
changing. Setto desiredvalue.
4) Repeat steps 2)and3) unti1 the desired frequency isset.
* 11 is not possible to enter a valuethat is outside the rated frequency
range ofthe unit (10kHz~260MHz).
4-1-2 DIRECTSETTING
Theset value is entered by using the FREQ (MHz) key®,the numeric keys @,
andthe ENTkey® or the kHzkey®.
1) Whenthe FREQ key® is pressed, the digits shown onthe frequency
display are erased and the ENT key' s LED flashes.
17

2) While theLEDis f lashing, enter the desiredfrequencyvalue by using
the numeric keys. Ifa wrong digit is entered,press theBSkey(§)
to erase the digits onebyone starting from the last input. Then
enter the correctvalue.
3)Select the frequency unit. IftheENTkeyis pressed after the
frequency has been input, and whi1e theLEDis flashing, the unit
becomes MHz. If thekHzkey is pressedinstead oftheENT key, the unit
becomes kHz.
* During direct sett ing, donot press the keysotherthan the numeric keys
on the front panel.
* If neither theENTkeynorkHzkey is pressed after the frequency has been
input and while theLEDis flashing, theset valuereturns tothe value
valid before the input whentheFREQ(MHz)key© is pressedagain. If
afrequencythat exceeds the ratings of this unit is entered, theset
valuealsoreturns tothe value valid before the input.
| NOTE 1
Both in case of norma 1 setting and direct setting, setting
resolution is 0.1kHz.
18

Example: Using direct setting tosetthe frequency to 23.456. 7MHz.
KEY OPERATION FREQUENCY DISPLAY
REMARKS
110. 000.0
Indicates frequency
before setting
FREQ key
Frequency setting
stand-by
Numerickey2 2
Numerickey3 23
Numerickey5 235
Wrong input
BSkey 23
Inputcorrection
Numerickey.
23.
Numerickey4 23.4
Numerickey5
23. 45
Numerickey6
23. 456
Numerickey7
23. 4567
Sett ing completed
ENTkey
23.456. 7
Unitsetting/output
4-1-3STEPSETTING
In addition tothe methods described in4-1-1 and4-l-2, theSTEP(FREQ)key®
canalso beusedtosetthe frequency.This method changesthe frequency in
steps (intervals). The stepvalue isset during thesecond function mode.
1)Press the2ndF key© to enter thesecond function mode.
2) When the FREQ (MHz)key© is pressed, theENT key' s LED flashes andthe
frequency displayindicates the previously set stepvalue.
3) WhiletheENT key' s LEDis flashing, usethenumeric keys to enter the
desiredstepvalue. Ifa wrong digit is entered,press theBSkey© to
erase the digits onebyone start ing fromthe last input. Then enter
thecorrectvalue.
4)Select the stepvalue unit. IftheENTkeyis pressed after the step
value has been input and while theLEDis flashing, the unit becomes MHz.
If thekHzkeyis pressedinstead oftheENTkey,the unit becomes kHz.
The display changesfrom indicat ing the stepvalue toshowingthe
19

frequency.
Thestepvalueset t ing range is 0.1kHz — 50MHz. If this range is
overstepped, the display changes to frequencydisplay andthe stepvalue
returns to the value valid before the new input.
If neither theENTkeynorkHzkey is pressed after the frequency has
been input and whi1e the LEDis flashing, the value shown on the display
returns tothe frequencyvaluedisplayedbefore the stepvalue was input
when the FREQ (MHz) key® is pressedagain.
5) WhentheENTkeyorkHzkeyis pressed, the value ofthe frequency
display changes from stepvalue to frequency indication and this value
is output.
6) Whenthe STEP (FREQ) key® is pressed, the frequencydisplayincreases
ordecreases In accordance with theset step interval andthe
frequencyvalue is output.
4-2 OUTPUT LEVEL SETTING
4-2-1 NORMAL SETT ING
As inthe case of frequency sett ing, the CURSORkey® andthe rotary encoder
© are used to enter theset value.
1)Press theA A or• • keyto move the cursor tothe LEVEL display
portion.
2)Press the*4 or• keyto move the cursor to the digit you want to set.
3) Whenthe rotary encoder is rotated, the digit under the cursor starts
changing. Setto desiredvalue.
4) Repeat steps 2)and3) unti1 the desired output level value isset.
5)Level units are either EMFdB/zordBm. Selecteither oneby using the
unit selectorswitch ©.
20