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