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Table 4-3. DCS Technical Schedules Circuit Parameters Z1, Z2, and Z3
Up
TM-11-5895-1012-10 Technical Control Facility (General) Manual
Next
Table 4-4. Commercial Technical Schedules
TM 11-5895-1012-10
12
16 2 0
24
2 8 32 3 6
4 0 4 4 4 8 52 56
60 64
68 72
4
8
FREQUENCY (KHz)
NOTES:
1. ABOVE CURVE REPRESENTS ENVELOPE DELAY REQUIREMENTS. LIMITS ARE NOT
SPEClFlED BELOW 6 KHz.
2. IF THE ENTIRE CIRCUIT CONSISTS OF PROPERLY AMPLITUDE EQUALIZED TWISTED
PAIR CABLE, FROM WHICH ALL LOADING COILS AND BRIDGE TAPS HAVE BEEN
REMOVED, NO DELAY EQUALIZATION SHOULD BE REQUIRED. GIVEN THE CORRECT
FREQUENCY RESPONSE OVER THE RANGE OF .01 TO 50 KHz (NO DISCONTINUITIES
OR SHARP ROLLOFFS), ENVELOPE DELAY WILL NOT NORMALLY BE AN ITEM FOR
CONCERN ON CABLE PAIRS.
3. SHOULD THE CIRCUIT CONTAIN CARRIER FACILITIES, DELAY EQUALIZATION MUST
BE EMPLOYED SUCH THAT THE DELAY VERSUS FREQUENCY RESPONSE OF THE
CIRCUIT IS A SMOOTHLY AND CONTINUOUSLY INCREASING FUNCTION OF
FREQUENCY, WHICH FALLS WITHIN THE SHADED AREA OF THIS FIGURE.
EL3Z0046
Figure 4-10. Relative envelope delay vs frequency limits.
4-36

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