Apogee 2349 DLTM4, Instructions Manual

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AL6300 DATA LINK TEST SET PRODUCT LINE MODEL 2349 DLTM4
A
POGEE
L
ABS
, I
NC
.
27
09.21.2017
210 South 3
rd
Street, North Wales, PA 19454
Tel: 215.699.2060 Fax: 215.699.2061

Setup the transmit and receive interfaces and data coding to be compatible with the data link connections.
Turn-off Blanking and Error generation.

Configure the Doppler menu (Figure 9) as follows:

Set the START and END frequencies. These may be set up in either ascending or descending order.

Set the DOP MODE to Curve to emulate the motion effect of a satellite or set this field to Linear, which
causes the output bit rate to change on a straight line function.

Program the CYCLE TIME to the period, in seconds, that it is desired for the output bit rate to change from
START to END values.

Set the OPERATION to SINGLE, to generate single frequency sweep from START to END then stop;
SAWTOOTH, create back to back cycles from START to END; or select CYCLE, which generates back to
back cycles from START to END and END to START.
To demonstrate the effect of the Doppler setup without connecting to a data link, connect a BNC cable from the TTL
DATA TX to the TTL DATA RX and a second BNC cable from the TTL CLK TX to the TTL CLK RX, on the DLTM4
I/O panel.
Select the Status Display (Figure 8) and set one of the fields to display the RX FREQ. The displayed bit rate will cycle
from the Start to the End value at the rate set in the CYCLE TIME field.