Technical Specification
Page B-10
Reference Guide: SM6610, SM6615, SM6620 and SM6625 Satellite Modulators
ST.RE.E10152.2
Table B.12: L-BAND OUT MONITOR Specification
Item Specification
Safety status:
SELV
Connector type:
F-type female 75
Ω
Connector designation:
L-BAND OUT MONITOR
Output impedance:
75
Ω
Output power:
−
30 dB nominal relative to main L-band output power
Return loss:
>10 dB, 950-1750 MHz
B.5.3
Reference Frequency Output
A reference frequency output is provided via the L-BAND OUT MAIN
connector, intended for use by an external frequency up-converter.
Table B.13: Reference Frequency Output Specification
Item Specification
Output power:
0 dBm
±
3 dB sine-wave into 50
Ω
load
Switchable on/off
Frequency: 10
MHz
Frequency stability:
<
±
0.2 Hz versus temperature
<
±
1 Hz ageing over 1 year
<
±
5.5 Hz ageing over 10 years
Phase noise:
−
110 dBc/Hz at 10 Hz offset
−
135 dBc/Hz at 100 Hz offset
−
155 dBc/Hz at 1 kHz offset
−
160 dBc/Hz at 10 kHz offset
B.5.4
DC Power Output
A dc power output is provided via the L-BAND OUT MAIN connector,
intended for powering an external frequency up-converter.
Table B.14: DC Power Output Specification
Item Specification
Voltage (open circuit):
+
24 V nominal, switchable on/off
Output resistance:
1
Ω
nominal
Ripple:
<100 mV pk-pk
Rated current:
500 mA max, short-circuit protected
Short-circuit current:
<1 A
Short-circuit duration:
Indefinite (automatic shutdown after approx. 2s)