FS AMPLIFIER■ OPEN/SHORT tolerated 24 h/365 days continuous.
•Virtually Unlimited Survival Time!
•Even at Maximum Output Power!
■ 9kHz～250MHz,500W(min.) ＠3dB Comp.
APPLICATIONFSA009K251-5757R

Bunch by Bunch Feedback System for Synchrotron (Storage Ring)
EMC(Electromagnetic Compatibility)
Plasma, etc.

SPECIFICATIONS ＠＋25℃

Frequency Range
Small Signal Gain
Gain Flatness
Output Power (CW)OUTLINE DRAWING: 9kHz ~ 250MHz: ＋57.0dB (min.): ±2.0dB (max.): 500W (min.) @3dB Comp.
: 400W (min.) @1dB Comp.
Operation Mode
: Class AHarmonics: －20.0dBc (max.) @Po=350W
Spurious: －70.0dBc (max.) @Po=350W
Impedance: 50Ω
Input Return Loss
: 14.0dB (min.) ／ VSWR : 1.5 (max.)
Output Return Loss
: 6.0dB (min.) ／ VSWR : 3.0 (max.)
Maximum RF Input Power : ＋3.0dBm
AC Supply Input: AC200V±15％／1φ, 50／60Hz, 3.2kVA(max.)
Operating Temperature :0℃ to ＋40℃
Storage Temperature: －15℃ to ＋65℃
Connectors: RF‐IN
N‐FEMALE @REAR PANEL
RF‐OUT N‐FEMALE @REAR PANEL
Size: (W)440mm×(D)700mm×(H)221.5mm(EIA:5U)*Excluding Projection
Weight: 43.0kg (typ.)
Cooling: Forced Air CoolingProtection Circuits: Over Temperature Protection
Power Supply Voltage Protection
Input Over Power Protection
Output Over Power Protection(@550W)
Output Over Reflected Power Protection(@500W)
Remote Interface: [Standard] GPIB (IEEE-488)[Optional] Ethernet, RS-232C
Other Functions: R&K FSA Circuits
R&K Multi Monitoring System
Safety Interlock(EMERGENCY)※IN MILLIMETERS
REAR VIEW

480440440221.5

FRONT VIEW

FSA009K251-5757R

SIDE VIEW
776700TYPICAL PERFORMANCE (Temp @+25℃)
Small Signal Gain

8010Input / Output Return Loss
Input Return Loss
Output Return Loss070

Output Power Linearity

58

FWD LIMIT

57

Return Loss (dB)

60
50
40

55
54-20

53-30

52
51

-40

30

0.01

0.1

110

Frequency (MHz)

100

300

0.01

Output Power @1dB Gain Comp.

061

0.1

1

Output Harmonics (dBc)

57
55
53
51

0.1

1

10

Frequency (MHz)

100

300

100300

Output Harmonics
Output Power = 350W

50
49
48
47
46
45

-20

44-30-40

9kHz
1MHz
10MHz
50MHz
100MHz150MHz200MHz250MHz42-50

41Harmonics
2nd
3rd
4th
5th-600.01

Frequency

43-70
0.01

10Frequency (MHz)-1059

Output Power (dBm)-10Output Power (dBm)

Gain (dB)

56

0.1

1

10Frequency (MHz)40
39100300-20-18-16-14-12-10-8-6

Input Power (dBm)-4-2

0R&K reserves the right to make changes in the specifications of or discontinue products at any time
without notice. R&K products shall not be used for or in connection with equipment that requires anextremely high level of reliability and safety such as aerospace uses or medical life support equipment.
Further, the export of R&K products from Japan may be subject to an export license by the governmentof Japan, based on Japan's "Foreign Exchange and Foreign Trade Law".

－1－

Released：Nov. 2021

RF POWER AMPLIFIER
Model:FSA009K251-5757R

TYPICAL PERFORMANCE (Temp @+25℃)
Group Delay (200kHz〜2MHz)

250

90

20080

15070

100
50060
5040-5030-100

20-150100.2

0.30.4

0.5 0.6 0.7 0.8 0.9 1

Group Delay (1MHz〜250MHz)

100

Delay (nS)

Delay (nS)300

2110Frequency (MHz)100

Phase (200kHz〜250MHz)60

13Noise Figure (dB)

14

Phase (deg.)

40
200-20-40

12111098-607-80

61

10100

250

10Frequency (MHz)86250

Noise Figure (10MHz〜250MHz)

1580

0.2

100

Frequency (MHz)

130

250

Frequency (MHz)AM modulation 80% followability

Stability Test (8 hours)※5min/SquareAM modulation (%)

84
82

550W →

80

500W →

78

450W →

76

60℃ →

74

50℃ →

73
70
68
0.1

40℃ →

Output Power
150W
200W
250W
300W
400W
130℃ →

Output Power（（））

20℃ →

10100

【Test condition】
・Frequency：100MHz・Measuring the time needed for the output stabilized after turning the OPERATE button on
and starting RF input from a signal generator.
(Signal generator OUTPUT : -0.48 dBm)

250

Frequency (MHz)R&K reserves the right to make changes in the specifications of or discontinue products at any time
without notice. R&K products shall not be used for or in connection with equipment that requires anextremely high level of reliability and safety such as aerospace uses or medical life support equipment.
Further, the export of R&K products from Japan may be subject to an export license by the governmentof Japan, based on Japan's "Foreign Exchange and Foreign Trade Law".

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