DRAKE TMQAMasi Manuel - Sayfa 4

Modülatör DRAKE TMQAMasi için çevrimiçi göz atın veya pdf Manuel indirin. DRAKE TMQAMasi 4 sayfaları. Digital qam modulators

Sayfayı Yazdır

SPECIFICATIONS

Output

Output Frequency:

44 MHz.

Output Level:

+30 dBmV.

Output Impedance:

75 Ohms.

Spurious Outputs:

-55 dBc typical, in band or

in adjacent channels.

-60 dBc otherwise when

used with Drake DUC550

or DUC860 upconverter

modules.

MER:

38 dB minimum.

Modulation

Mode:

16, 32, 64, 128, 256 QAM.

Symbol Rate:

7.0 Msymbols/s Max.

Excess Bandwidth:

15% (ITU-A), 18% (ITU-B).

FEC Encoding

FEC Modes:

DVB/DAVIC

(ITU-T J.83 Annex A),

Digicipher® II

(ITU-T J.83 Annex B).

The TMQAM and TMQAM asi modulator can operate in either of two clock modes:

1) It can automatically lock to the incoming bit rates producing an output rate determined by the input

stream. Power should be supplied by the model PS8 power supply module which also mounts into

the DRMM12. The PS8 and DRMM12 are sold separately.

2) It can be set, from front panel controls, to output a desired symbol rate using an internally

generated clock. In this mode, when the input bit rate is less than that needed to produce the set

output symbol rate, null packets are added by the modulator.

The QAM signal must be up-converted to the desired channel with the Drake Up-Converter

module, prior to transmission on the cable plant.

Pin Out DVB SPI Interface

1 Data Clk +

2 GND

3 Data 7 +

4 Data 6 +

5 Data 5 +

6 Data 4 +

7 Data 3 +

8 Data 2 +

9 Data 1 +

10 Data 0 +

11 Data Valid +

12 Start of Packet +

13 GND

Input

Transport Stream:

TMQAM - Parallel Input

according to DVB SPI, LVDS

specifications.

TMQAM asi - Serial input

according to DVB ASI

specifications.

Connector:

TMQAM - DB25 Female.

TMQAM asi - BNC, 75 Ohms.

General

DC Power Required:

TMQAM - 5 VDC @

380 mA.

TMQAM asi - 5 VDC @

500 mA.

Size:

2.06" W x 3.5" H x 9.25" D

(5.23 cm W x 8.9 cm H x

23.5 cm D).

Weight:

1 lb. 2 oz. (0.51 Kg).

Specifications subject to change without notice or obligation.

14 Data Clk -

15 GND

16 Data 7 -

17 Data 6 -

18 Data 5 -

19 Data 4 -

20 Data 3 -

21 Data 2 -

22 Data 1 -

23 Data 0 -

24 Data Valid -

25 Start of Packet -

THREE YEAR LIMITED WARRANTY

R.L. DRAKE COMPANY warrants to the original purchaser this product shall be free from defects in material or workmanship for three (3)

years from the date of original purchase.

During the warranty period the R.L. DRAKE COMPANY or an authorized Drake service facility will provide, free of charge, both parts and

labor necessary to correct defects in material and workmanship. At its option, R.L. DRAKE COMPANY may replace a defective unit.

To obtain such warranty service, the original purchaser must:

(1) Retain invoice or original proof of purchase to establish the start of the warranty period.

(1)

(2)

(2) Notify the R.L. DRAKE COMPANY or the nearest authorized service facility, as soon as possible after discovery of a possible defect,

(2)

of:

(a) the model and serial number,

(b) the identity of the seller and the approximate date of purchase; and

(c) A detailed description of the problem, including details on the electrical connection to associated equipment and the list of such

equipment.

(3) Deliver the product to the R.L. DRAKE COMPANY or the nearest authorized service facility, or ship the same in its original container

(3)

or equivalent, fully insured and shipping charges prepaid.

Correct maintenance, repair, and use are necessary to obtain proper performance from this product. Therefore carefully read the Instruction

Manual. This warranty does not apply to any defect that R.L. DRAKE COMPANY determines is due to:

(1)

(1) Improper maintenance or repair, including the installation of parts or accessories that do not conform to the quality and specifications

(1)

of the original parts.

(2) Misuse, abuse, neglect or improper installation.

(2)

(3) Accidental or intentional damage.

(3)

All implied warranties, if any, including warranties of merchantability and fitness for a particular purpose, terminate three (3) years from the

date of the original purchase.

The foregoing constitutes R.L. DRAKE COMPANY'S entire obligation with respect to this product, and the original purchaser shall have no

other remedy and no claim for incidental or consequential damages, losses or expenses. Some states do not allow limitations on how long

an implied warranty lasts or do not allow the exclusions or limitation of incidental or consequential damages, so the above limitation and

exclusion may not apply to you.

This warranty gives you specific legal rights and you may also have other rights which vary from state to state. This warranty shall be

construed under the laws of Ohio.

R.L. DRAKE COMPANY

230 INDUSTRIAL DRIVE

FRANKLIN, OHIO 45005 U.S.A.

CUSTOMER SERVICE AND PARTS TELEPHONE: +1 (937) 746-6990

TELEFAX: +1 (937) 743-4576

WORLD WIDE WEB SITE: http://www.rldrake.com

is a trademark of the R.L. Drake Company

is a registered trademark of the R.L. Drake Company

WARRANTY

P/N: 3852372D-1-2003

Printed in the U.S.A.