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3-18
|
IBUC
3
,
IBUC
3
G
Operations Manual: Installation
Engineered to Endure
Transmit Power Alignment
Transmit L
-
band Input Adjustment with Modem or Converter
To set the power level of the modulator output,
1. Use a spectrum analyzer to measure the power level of the L
-
band signal at the
output of the coaxial cable that connects to the IBUC at the Tx L
-
band connector
J1.
2. Use the level adjust mechanism of the modem or converter to increase or decrease
the power level. Adjust to reach a level of –30 dBm. (All IBUC units are designed
to reach rated power at P1dB over frequency and temperature with
-
30 dBm at the
input when the attenuator is set to minimum attenuation.) For some modems and
shorter cable runs, it is not possible to reach –30 dBm. In this case, the attenuator
in the IBUC may be used instead.
3. Check that the 10 MHz reference signal is present and within the range of +5 dBm
though –12 dBm.
Note:
The IBUC
3
and IBUC
3
G
require a 10 MHz reference signal to operate. Check
the model number of your IBUC to determine whether an external 10 MHz signal
is required.
4. Disconnect the spectrum analyzer from the coaxial cable.
Transmit RF Output Adjustment with Modem or Converter (70 MHz to L
-
band)
To adjust the power level of the IBUC transmitter output,
1. Connect a waveguide
-
to
-
coaxial adapter and a 40 dB high
-
power attenuator to the
IBUC waveguide output.
2. Ensure that DC power to the IBUC is applied in the proper voltage range.
(Depending on your setup, this could be through the coaxial cable or through the
J3 connector.)
3. Connect the Tx L
-
band input signal to the Tx L
-
band connector J1 on the IBUC.
4. Enable the Tx signals in the modem or converter and the IBUC.
!
WARNING
DC power might be present on the cable. Terrasat recommends the use
of a DC block when using a spectrum analyzer.
Содержание IBUC 3
Страница 8: ...vi Engineered to Endure ...
Страница 12: ...viii Engineered to Endure ...
Страница 13: ...ix REVISION HISTORY Engineered to Endure Revision Date Description A 1 26 2021 Initial Public Release ...
Страница 14: ...x Engineered to Endure ...
Страница 33: ...System Components 2 11 Engineered to Endure Figure 2 3 DC powered IBUC3 Block Diagram ...
Страница 37: ...System Components 2 15 Engineered to Endure Figure 2 4 DC Low Power IBUC System Configuration ...
Страница 40: ...2 18 IBUC 3 IBUC 3G Operations Manual Functional Description Engineered to Endure ...
Страница 60: ...3 20 IBUC 3 IBUC 3G Operations Manual Installation Engineered to Endure ...
Страница 90: ...6 8 IBUC 3 IBUC 3G Operations Manual Troubleshooting Engineered to Endure ...
Страница 132: ...B 8 IBUC 3 IBUC 3G Operations Manual Using HyperTerminal Engineered to Endure ...
Страница 157: ...Menu Options D 3 Engineered to Endure Figure D 3 Hand held Terminal Menu Tree ...
Страница 162: ...D 8 IBUC 3 IBUC 3G Operations Manual Hand Held Terminal Menu Tree Engineered to Endure ...
Страница 168: ...E 6 IBUC 3 IBUC 3G Operations Manual Legacy Binary Command Message Structure Engineered to Endure ...
Страница 223: ...Reference Drawings G 3 Engineered to Endure Figure G 2 Fabrication Drawing FBD 21984 XXXX Rev B page 1 of 2 ...
Страница 225: ...Reference Drawings G 5 Engineered to Endure Figure G 4 Example Installation Drawing IND 10521 0011 Rev A ...
Страница 227: ...Data Sheets G 7 Engineered to Endure ...
Страница 228: ...G 8 IBUC 3 IBUC 3G Operations Manual Component Specifications and Reference Drawings Engineered to Endure ...
Страница 235: ...I n d e x 3 Engineered to Endure ...
Страница 236: ...I n d e x 4 ...