UHP-1100 SATELLITE ROUTER BOARD
GENERAL DESCRIPTION AND INSTALLATION GUIDE, v3.2
© UHP Networks Inc. 2015
9
www.uhp.net
Cable length and cable quality (losses level) can affect the quality and possibility of receiving signals.
1.4.8
Burst demodulator IF input (TDMA RX)
TDMA-RX is the second input for the signal from the satellite (LNB). This input is designed to receive bursts (TDMA)
in UHP proprietary format. The input can also provide, from the router side, supply voltage 13 or 18 V, similar
voltages being simultaneously fed to both inputs. The router can feed this input with a reference signal for using
PLL LNB requiring external reference signal. When reference signal is switched off the router will not distort
reference signal arriving at the input from outside. The rest conditions are similar to those across SCPC RX.
T
HE TOTAL CURRENT CONSUMED BY EXTERNAL EQUIPMENT THROUGH BOTH
RX
INPUTS SHOULD NOT BE IN EXCESS OF
750
M
A.
N
ORMALLY
,
CURRENT CONSUMPTION BY
DRO
LNB
-
150
M
А,
PLL
LNB
-
500
M
А.
1.4.9
Modulator output (TX OUT)
TX
OUT
OUTPUT CAN FEATURE
24
VDC
WITH A HIGH SHORT
-
CIRCUIT CURRENT
.
S
HORT CIRCUITING CAN CAUSE
SPARKLE SPREAD AND BURNS
.
T
HIS VOLTAGE CAN DAMAGE MEASUREMENT EQUIPMENT IF IT IS NOT PROTECTED AT ITS
INPUTS
.
S
UPPLYING EXTERNAL VOLTAGE TO THIS CONNECTOR IS OBJECTIONABLE AND SUPPLYING MORE THAN
24
V
IS
PROHIBITED
.
UHP-1100 modulator is compatible with most satellite transmitters/converters (BUC). Those incompatible are only
transmitters that require to explicit “TX On” FSK command but such transmitters are extremely rare and are not
widely employed.
Modulator is connected directly to the transmitter IF connector. Router provides 24 VDC power supply to the
transmitter and 10 MHz reference signal. UHP-1100 is not provided with a separate protection on the transmitter
power supply circuitry. Use is made of current protection for the power supply adapter. In case of a short circuit
the router is de-energized and then gets restarted. If power supply is switched on in the configuration, restarts
continue at 5 seconds interval until short circuiting is removed.
A
NY OPERATIONS WITH
IF
TX
CABLE SHOULD BE PERFORMED WITH
24
V
SUPPLY VOLTAGE TURNED OFF
.
O
THERWISE
,
SELF
-
INDUCTION ACROSS A LONG CABLE CAN DAMAGE THE TRANSMITTER AND
/
OR ROUTER
.
1.4.10
“ERROR” Indicator
“ERROR” red indicator makes it possible to infer about problems in the router functioning. The type of the
generated problem can be judged by the number of indicator flashes:
1 – Demodulator cannot receive MCPC channel from the Hub (other Terminal). Please check AGC value in the
demodulator statistics to determine whether there is a signal from antenna (see description of reception
problems) to separate LNB and cable faults.
2 – Router cannot receive TDMA configuration from the HUB (TDM/TDMA network mode). The reason can be in
the non-availability of receive channel from the HUB, CRC errors during reception, wrong configuration of the
Terminal.
3 - Router cannot calculate time shift with respect to the HUB. The reason can be in the non-availability of
reception or a large number of CRC errors during reception.
4 – HUB cannot receive signal from this terminal. Please check transmit signal level of the terminal, whether power
supply and the reference signal for the transmitter are switched on (or off if required), whether DTTS or
geographical coordinates are set correctly in the TDMA settings.
5 - Unit is in Backup state of Redundancy mode. Not an error.
Continuous signal means that the router has hardware or configuration errors. If ERROR indicator is continuously
lit upon power on it means hardware failure of UHP occurred which prevents software from starting. Try to power
it off and power on again or press RESET button on rear panel.
