ViaSat VBM-1400, Инструкция по установке и эксплуатации

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VBM-1400 Broadband Modulator Installation and User’s Guide
Preparation for Use and Installation
1018360 Rev. 002
2-4
Table 2-2 Rear Panel Connectors
Ref
Desig
Label Type Mate Description/Function
J1 DVB/M2P IN DB-25 (F) DB-25 (M) Data input MPEG2 format. (Front
panel selectable). Provides the
baseband data input to the VBM-
1400. One connector is used to pass
either DVB-SPI or M2P data. Data
is used to modulate the IF made
available on the TX OUT connector.
(Refer to Table 2-3 for pin
descriptions).
J2 ASI IN BNC (F)
75 Ohms
BNC (M) ASI Input (Front panel selectable).
Note: J1 must also be connected to
VBM-1400 for clocking.
J3 ETHERNET RJ-45 (F) RJ-45 (M) Provides Remote Control connection
using Ethernet interface. (Front
panel selectable). (Refer to Table 2-4
for pin descriptions).
J4 ALARM DB-9 (M) DB-9 (F) Provides relay controlled
open/ground switching used to
activate external monitoring
equipment such as a buzzer, bell, or
light (Refer to Table 2-5 for pin
descriptions).
J5 REMOTE DB-9 (F) DB-9 (M) Provides Remote Control or software
update connections using both EIA-
485 and EIA-232 on one connector.
(Front panel selectable). (Refer to
Table 2-6 for pin descriptions).
J6 EXT REF IN BNC (F)
50 Ohms
BNC (M) External reference input. Balanced
sinewave at 1 to 25 MHz at –20 to 0
dBm. (Frequency is front panel
selectable).
J7 TX MON BNC (F)
50 Ohms
BNC (M) Attenuated TX OUT (–20 dB) for
external equipment monitoring.
J8 TX OUT BNC (F)
50 Ohms
BNC (M) Modulated IF out on coaxial cable to
ODU. 70 ± 20 MHz, 140 ± 40 MHz.
0 to –25 dBm.
J9 REF OUT BNC (F)
50 Ohms
BNC (M) Reference output. Internal reference
frequency (10 MHz) or signal that is
present on the EXT REF IN
connector (J6) (Front panel
selectable).
--- EXT GND Stud ----- External ground to reduce ground-
loop interference.
---
On[ | ] /Off [
O
],
AC In
NEMA std (M) NEMA std (F) On/Off switch and AC input power.
100-240V, 50-60Hz 0.5A @ 110VAC
MAX