Specifications

T1 CSU/DSU
18
In making the following 5 selections, the operator defines the mode of operation as DSX1 and also
specifies the proper transmit output pulse.
4. TRANSMIT OUTPUT PULSE: (DSX-1 Mode Only. If any of the output pulse selections are made,
then the CSU selection is invalid. If a DSX-1 Mode is selected, verify that the LBO Switch is in the
O position.) The TRANSMIT OUTPUT PULSE selection is determined by the distance between
the unit and the external CSU.
A. 000 – 133 FT ..........................................................................S3-3: OFF
S3-4: OFF
S3-5: ON
B. 133 – 266 FT ..........................................................................S3-3: ON
S3-4: ON
S3-5: OFF
C. 266 – 399 FT ..........................................................................S3-3: OFF
S3-4: ON
S3-5: OFF
D. 399 – 533 FT..........................................................................S3-3: ON
S3-4: OFF
S3-5: OFF
E. 533 – 655 FT ..........................................................................S3-3: OFF
S3-4: OFF
S3-5: OFF
5. DENSITY MONITOR:
A. 1 IN 16 ...........................................................................S3-6: OFF
S3-7: ON
S3-8: ON
B. 1 IN 32 ..........................................................................S3-6: OFF
S3-7: OFF
S3-8: ON
C. 1 IN 48 ..........................................................................S3-6: OFF
S3-7: ON
S3-8: OFF