FEATURES
•Low noise, high dynamic range
• Bandwidth to 4.5 GHz
•
Low start frequency, 50 kHz optional
•
Plug and play. No external control
circuits required
• Rack-mount and outdoor enclosures
available
APPLICATIONS
• L-, S- and C-band antenna remoting
• Local oscillator remoting
• EMC testing
• RF on fiber
• Interfacility communication links
• CATV distribution
SBT
FIBER OPTIC
TRANSMITTER
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
PARAMETER CONDITION UNITS MIN. TYP. MAX.
Operating frequency 3 dB bandwidth
Model: SBT-2500 MHz 10 2500
Model: SBT-2500-50k MHz 0.05 2500
Model: SBT-4500 MHz 10 4500
Model: SBT-4500-50k MHz 0.05 4500
Gain Measured E/O with a Hewlett Packard dB 3 6 9
8703 lightwave analyzer
Noise figure (above 10 MHz) Measured with LBR-10M4P5G-10-15-10
fiber optic receiver
Model: SBT-2500 (-50k) dB 11 15
Model: SBT-4500 (-50k) dB 16.5 18
Group delay Peak-to-peak ns 0.2
VSWR Input 2:1
Input power at 1 dB compression
Model: SBT-2500 dBm -10 -8.2
Model: SBT-4500 dBm -15 -12
Spurious-free dynamic range 1 Hz bandwidth dBz/Hz2/3 100
Maximum input power No damage dBm +10
RF connectors SMA female (male optional)
Impedance Input Ohms 50
NOTE: Test condition at -30 dBm input power, 1 m of fiber.
OPTICAL PERFORMANCE SPECIFICATIONS
PARAMETER CONDITION UNITS MIN. TYP. MAX.
Fiber Single mode fiber
Fiber optic connectors SC/PC (other standards available)
Wavelength CWDM channels available, nm 1550
see chart on next page
Spectral width FWHM nm 0.06
Optical power in fiber Reference only mW 3 5 9
Side mode suppression ratio dB 35 40
ENVIRONMENTAL CONDITIONS
PARAMETER CONDITION UNITS MIN. TYP. MAX.
Operating temperature°C-20 +70
Storage temperature °C -40 +85
Humidity Relative humidity, noncondensing % 95
Vibration 7.3 g’s rms, 20-2000 CPS, Per MIL-STD-810B, Method 514, Procedure 5
ORDERING INFORMATION PART NUMBER EXAMPLES
Standard transmitter SBT-2500 or SBT-4500
50 kHz start frequency option Add -50k to model number SBT-4500-50k
Specify a CWDM channel Add channel number from chart SBT-2500-1310
to end of part number SBT-4500-1310
Specify a CWDM channel and Add -50k and channel number from SBT-2500-50k-1310
50 kHz start frequency option chart to end of part number SBT-4500-50k-1310
DC POWER REQUIREMENTS
PARAMETER
CURRENT @ 25°C BASE PLATE (TYP.)
PIN # MIN. TYP. MAX.
Transmitter 190 mA 4 +11 V +12 V +16 V
105 mA 5 -11 V -12 V -16 V
TYPICAL TEST DATA
SBT CWDM CHANNELS
CHANNEL NO. MIN. TYP. MAX. UNIT
-1270 1267 1270 1273 nm
-1290 1287 1290 1293 nm
-1310 1307 1310 1313 nm
-1330 1327 1330 1333 nm
-1350 1347 1350 1353 nm
-1370 1367 1370 1373 nm
-1390 1387 1390 1393 nm
-1410 1407 1410 1413 nm
-1430 1427 1430 1433 nm
-1450 1447 1450 1453 nm
-1470 1467 1470 1473 nm
-1490 1487 1490 1493 nm
-1510 1507 1510 1513 nm
-1530 1527 1530 1533 nm
-1550 1547 1550 1553 nm
-1570 1567 1570 1573 nm
-1590 1587 1590 1593 nm
-1610 1607 1610 1613 nm
Example:
To specify a wavelength for a 2.5 GHz SBT transmitter, add the channel number to the end of the part number: SBT-2500-1310
To specify a 1310 nm wavelength for a 2.5 GHz SBT transmitter with a 50 kHz start frequency: SBT-2500-50k-1310
* Measured with LBR-10M4P5G-10-15-10.
Link Relative Group Delay
-500
-400
-300
-200
-100
0
100
200
300
400
500
0 1000 2000 3000 4000
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
RELATIVE DELAY (ps)
0 500 1000 1500 2000 2500 3000 3500
Link Noise Figure
0
3
6
9
12
15
18
21
4000 4500
NOISE FIGURE (dB)
Link Frequency Response
0
3
6
9
12
15
18
21
0 1000 2000 3000 4000
GAIN (dB)
Transmitter Input Return Loss
-40
-30
-20
-10
0
0 500 1000 1500 2000 2500 3000 3500 4000 4500
RETURN LOSS (dB)
TRANSMITTER INPUT RETURN LOSS
LINK NOISE FIGURE*
LINK RELATIVE GROUP DELAY*
LINK FREQUENCY RESPONSE*
GENERAL SPECIFICATIONS
PARAMETER CONDITION UNITS MIN. TYP. MAX.
Wavelength temperature coeff. CW, Tcase = 0~+70°C nm/°C 0.07 0.1 0.12
100 Davids Drive, Hauppauge, NY 11788
TEL.: (631) 436-7400 • FAX: (631)436-7430
www.miteq.com
D-337 07•06
SBT FIBER OPTIC
TRANSMITTER
OUTLINE DRAWING
PIN DESCRIPTION
1 GROUND
2-12 VDC, 250 mA MAX.
+12 VDC, 150 mA MAX.
OPTICAL POWER MONITOR
NORMAL OPERATION = -2.5 TO -1.5 VDC
0 VOLTS INDICATES NO LASER LIGHT
3
4
6
5
NO CONNECTION
NO CONNECTION
NO CONNECTION
NO CONNECTION
NO CONNECTION
7
8
9
RF INPUT CONNECTOR
TYPE: SMA FEMALE
.30 [7.6]
1.37 [34.8] .28 [7]
.72 [18.3]
.41 [10.4]
.59 [15.1]
2.49 [63.2]
2.29 [58.2]
.10 [2.5] .12 [3]
2.50
[63.5]
2.76
[70.2]
1.47 [37.4]
.38 [9.5]
.33 [8.4]
1.70
[43.2]
1.25
[31.8]
2.10
[53.3]
.27
[6.86] 1.43 [36.3]
2.25 [57.2]
.35 [8.9]
.12
[3]
.31
[7.9]
1.87 [47.4]
.84
[21.3]
POWER AND STATUS
CONNECTOR TYPE DEM-9
SEE TABLE FOR PIN OUT
5X Ø 0.14 [3.56] THRU
CUSTOMER MOUNTING
HOLES
OPTICAL OUTPUT
FIBER 9/125/900
LENGTH: APPROX. 1M
CONNECTOR: SC/PC STANDARD
OTHER STANDARDS AVAILABLE
.19 [4.83]
CUSTOMER
MOUNTING HOLES
5X #4-40 UNC X
OK FAULT
LASER
STATUS
NOTE: All dimensions shown in brackets [ ] are in millimeters.
