HDO907 Transmitter

The HDO907 downstream transmitter supports frequencies up to 1218 MHz. Optical output power classes are available from +2 dBm up to +15 dBm. HDO907 is a 1310 nm transmitter for short distances. It supports broadband, narrowcast and broadcast services in a digital format.

Product Specifications

Optical parameters
Light source
Cooled DFB with optical isolator
Peak wavelength
1310 nm
Output power, nominal value
+2 dBm
+4 dBm
+6 dBm
+8 dBm
+10 dBm
+11 dBm
+12 dBm
+13 dBm
+14 dBm
+15 dBm
Relative intensity noise
-154 dBc/Hz
OMI per channel
4.5% for CENELEC 42 chs loading
Pass bands of optional WDM filter
1270…1360 nm and 1460…1620 nm
Number of optical ports
1 or 2
RF parameters
RF inputs
Two identical inputs
Frequency range
47…1218 MHz
RF impedance
75 Ω
Input return loss
18 dB
±0.4 dB
Automatic power control (APC)
Laser test point level for 4.5 % OMI
78 dBμV
Input level
77 dBμV
Level adjustment range
10 dB
Equaliser adjustment range
0…6 dB
Isolation between inputs
50 dB
Spectrum analyser module (option)
Measurement range
47…1218 MHz, 0.25 MHz steps
Measurement bandwidth
0.35 MHz
Dynamic range
58…98 dBμV
Measurement accuracy
±1 dB
Noise and distortion performance
CENELEC, 42 unmodulated channels
– Link C/N with 0 dBm to receiver
– CTB guaranteed value
– CSO, guaranteed value

53.5 dB
65 dB
60 dB
NTSC, unmodulated channels
– Typical link C/N with 0 dBm to receiver
– CTB, typical value
– CSO, typical value

53.5 dB
67 dB
62 dB
CENELEC 42 chs assumes analogue loading up to 862 MHz.
NTSC-77 assumes analogue loading up to 550 MHz.
Digital channels can be placed everywhere in the frequency spectrum in both cases taking into account the loading they represent
Power consumption
10 W
Supply voltages
25 V / 300 mA
6.3 V / 400 mA
RF connectors
F female
Optical connector
SC/APC, E-2000
Field replaceable fan
Dimensions (h x w x d)
2U x 7HP x 380 mm, Occupies 1/12 of HDX002
1.5 kg
EMC compliance
EN 50083-2
Enclosure classification
Operating temperature range
0…+45 °C
Storage temperature range
-20…+60 °C
Operating relative humidity
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