5specifications (continued), Eh24a chassis, Up converter rf out – Drake EH24A/EH24A ASI User Manual
Page 5: General, Mechanical
5
Specifications (continued)
EH24A CHASSIS
Program Filtering and Grooming:
Encoded programs may be disabled or sent to one or both output ports - ASI or QAM, user
selectable. The output timing is restamped and null packets are managed as required.
Multiplexer:
Built in multiplexer circuitry combines the outputs of all enabled encoders in an EH24A into multiprogram
transport streams, one to the QAM output and one to the ASI output.
MPEG Program Numbers:
MPEG program numbers in the output transport stream by default will be assigned sequentially,
corresponding to the encoder number. The leftmost encoder input, as viewed from the rear panel, will
be # 1. If the Ethernet remote access is used, the MPEG and virtual channel (major and minor) numbers
may be user selected to any desired MPEG-legal numbers and program names, up to 7 characters in
length, may be added.
ASI Output:
Any or all of the enabled encoders may be directed to the ASI output by means of the user selectable
program filter. If EAS operation is used, this output can be assigned to loop the EAS alert program to
additional EH24As. It can also loop DTA data.
QAM Modulator:
Any or all of the enabled encoder outputs may be directed to the QAM Modulator by means of the user
selectable program filter.
Output Symbol Rate:
1 to 7 MSps
Modes/FEC:
ITU-A: 16, 32, 64, 128, 256, 512,1024 QAM
ITU-B (DigiCipher): 64, 256, 1024 QAM
I/Q Phase Error:
Less than 1 degree.
MER:
Greater than 38 dB with blind EQ
UP CONVERTER RF OUT
Output Frequency Range:
54 to 1002 MHz
Channel Plans:
CATV STD, HRC, IRC, BROADCAST
Frequency Stability:
± 5 ppm
Output Level Accuracy:
± 1 dB
Output Level:
45 dBmV to 62 dBmV, adjustable
Output Level Accuracy:
± 1 dB
Phase Noise:
-101 dBc @ 10 kHz offset
Broadband Noise:
Less than -12 dBmV (6 MHz BW@ ± 12 MHz)
Output Impedance:
75 Ohms, RL 14 dB or better, 54 - 1002 MHz
Spurious outputs:
- 60 dBc from 40 to 1000 MHz
GENERAL
AC Power:
90 to 264 VAC / 47 - 63 Hz, 70 W maximum
Operating Temperature:
0 deg to + 50 deg C
FCC Approvals:
The EH24A and the encoder modules have been verified as complying with part 15 of the FCC rules.
MECHANICAL
EH24A
14 1/4" D x 3 1/2" H x 19" W, 9.5lbs
SDE24, SDE24A,SDE24EAS, ASII
8" D x 1 3/8" W x 3 1/4" H, approx. 0.5 lbs