Specifications

ManualsBrandsRomantis Satellite Communications ManualsComputer equipmentUHP-1000

UHP-1000 SATELLITE ROUTER

INSTALLATION AND OPERATION MANUAL, V. 2.5

(SW VERSION 2.5.X)

In some router operation modes, certain modulator settings are missing. This is due to the fact that settings are

received from the network central station and are applied automatically.

Modulator frequencies are specified in KHz. You can recalculate them to satellite frequencies if you know BUC LO

frequency (See Figure 14).

Modulator control commands:

---------- Modulator parameters

modulator frequency 950000-1700000 - Central frequency (KHz)

Modulator central carrier frequency in kilohertz. The recommended maximum frequency should not

exceed 1550 MHz. Working with higher frequency is possible, but not guaranteed and should be

tested before use.

modulator symrate 1-34000 - Symbol rate (KSps)

Carrier symbol rate. Bit rate can be calculated based on the current FEC value. Modulator shows it in

its statistics data.

modulator fec uncoded|1/2|2/3|3/4|5/6|7/8 - FEC mode

Viterbi coder error correction mode in the modulator.

modulator mode s1|s2 - Modulator mode

Modulator transmission mode – DVB-S1 or DVB-S2. For proper functioning in DVB-S1 mode DVB1 or

DVB2 software should be loaded, for DVB-S2 mode DVB2 software should be loaded and unit mode

must be SCPC or Outroute.

ALWAYS SET FEC AFTER CHANGING THE MODE OF OPERATION CANNOT BE GUARANTEED.

Mode DVB-S.

---------- DVB-S modulator parameters

modulator fec uncoded|1/2|2/3|3/4|5/6|7/8 - FEC mode

Viterbi coder error correction mode in the DVB-S1 modulator..

Mode DVB-S2.

s2modulator mode ccm|along|ashort - CCM / ACM mode, ACM frame size

Selection of mode of modulator operation.

Table 9 Supported FEC modes

FEC

CCM

ACM-Long

ACM-Short

1/3

QPSK

2/5

QPSK

1/2

QPSK

3/5

QPSK, 8PSK

2/3

QPSK, 8PSK

QPSK, 8PSK, 16APSK

3/4

QPSK, 8PSK

QPSK, 8PSK, 16APSK

4/5

QPSK

QPSK, 16APSK

5/6

QPSK, 8PSK

QPSK, 8PSK, 16APSK

8/9

QPSK, 8PSK

QPSK, 8PSK, 16APSK

9/10

QPSK, 8PSK

QPSK, 8PSK, 16APSK

Three modes of operation are currently supported: CCM, ACM-Long, ACM-Short.

ССМ – basic mode that compatible with previous generations of UHP hardware, supports QPSK and 8PSk

modulations.

ACM-Long and ACM-Short – advanced mode of operation that compatible with new generation of UHP hardware

(SN > 3501) and supporting the following modulations: QPSK, 8PSK and 16APSK. Actual software release does not

support Adaptive Code and Modulation (ACM).

The key difference of ACM-long and ACM-short modes is length of DVB frame, which is 64800 and 16200 bit

respectively.