Operating instructions

DVB3030/DVB3030L Digital Video Broadcast Modulator User Interfaces
TM052 - Rev. 3.5 4-51
15. FIFO Error: {YES, NO} Allows masking of Reed-Solomon FIFO
Error minor alarm.
16. Loss Int Clock: {YES, NO} Allows masking of Loss of Internal Clock
minor alarm.
31. Freq.: Enter in 1 Hz increments from 50-90 or 100-180 MHz.
32. Strap: The strap code has not been implemented at this time.
33. DR: Enter the data rate in 1 BPS increments from 1,000,000
to 78,750,000 BPS.
34. SR: Enter the symbol rate in 1 SPS increments from
1,000,000 to 45,000,000 SPS.
35. Conv Encoder: {NONE, VIT 1/2, VIT 2/3, VIT 3/4, VIT 5/6, VIT 6/7, VIT
7/8} changes the FEC encoding type and rate.
Note: Changing FEC rate will leave Symbol Rate
constant and change Data Rate for new overhead.
36. Test Mode: {ON LINE} No DVB Test Modes have been
implemented.
37. Spectrum: {NORMAL, INVERTED} Inverts the direction of vector
rotation for QPSK modulation.
Meets the IESS specification.
38. Scrambler: {Enable, Disable} Enables DVB Scrambler for Energy
Dispersal
39. RS & Intlvr: {Enable, Disable} Enables Reed-Solomon Encoder and
Convolutional Interleaver
40. Test Pattern: {Enable, Disable} Inserts 2
15
-1 Test Pattern in the Data
Path before scrambler
41. Data Clock Sel: {SCT, SCTE} SCT: Data clock is supplied by DVB
modulator internally.
SCTE: Data clock is supplied by user
equipment to DVB modulator.
Note: The Transmit Clock (SCT) supplied by the DVB3030 is always Output. Normally,
this clock is used to clock the data out of the data source and then return it to the SCTE
pins of J9 or J8. The DVB3030 is then set to SCTE mode eliminating any possible clock
skew. Alternately, the data source can generate the SCTE clock internally and the SCT
signal can be ignored. If SCT mode is selected, the Modulator data clock will not be
locked to the incoming data stream. This mode is NOT recommended except for testing
or fault backup.
42. EXT CLK OUT: {SCT, SCTE, NONE} Selects the source of clock output
from the G.703 Interface. The selection is fixed at ‘SCT’
for Serial, Parallel and HSSI and fixed at ‘None’ for ASI.
43. Carrier Ctl: {OFF,ON} Turns transmitter On or Off.
44. Carrier Sel: {OFF, CW, DUAL, OFFSET, POS FIR, SEG FIR}
OFF: Normal Modulation
CW: Pure Carrier
DUAL: Double Sideband
OFFSET: Single Sideband
POS.FIR: Positive Impulse Response
NEG.FIR: Negative Impulse Response
45. Clock Invert: {NORMAL,INVERTED} Inverts the data clock.
46. Data Invert: {NORMAL,INVERTED} Inverts the data.
47. Interface: {SERIAL, PARALLEL, ASI} Selects Serial, Parallel or
ASI type interface.
Note: Only the interface option that has been ordered may be selected.