 |
|||
|
Page Title:
Transmitter Frequency Stability |
|
||
| ||||||||||
|
|  MIL-N-81207A(AS)
Signal Strength
Bearing Accuracy
-82 dBm to O dBm
2.0
below -82 dBm
2.5
15 Hertz Analog Bearing Accuracy - The
3.4.8 .2.4
equipment shall have bearing errors no greater than shown below,
under static tracking conditions, when operating with 15 HZ
information only. This requirement shall be applicable over a 7%
to 40% range of modulation, with and without auxiliary reference
groups.
Signal Strength
Bearing Accuracy
Data Samplinq Point - Distance and hearing
3.4.8.3
timing information shall be derived from the leading edge of the
first pulse of each received pulse pair in the REC and T/R modes,
or from the leading edge of the received single pulses in the A/A
mode.
Stability - The receiver-transmitter frequency
3.4.9
stability shall be as follows:
Transmitter Frequency Stability - The frequency
3.4.9.1
of the transmitter shall be maintained within 0.0025% of the
specified channel frequency.
Receiver Stability - The frequency of the
3.4.9.2
receiver local oscill ator shall be maintained within 0.002% of
its nominal value.
Automatic Gain Control
3.4.10
Automatic Gain Control in A/A Mode - In the A/A
3.4.10.1
mode, the automatic gain control shall be such that the equipment
shall not lock on to any reply which is more than 12 dB weaker
than any other reply.
Automatic Gain Control in T/R Mode - When
3.4.10.2
operating with a ground beacon generating signals in accordance
with MIL-STD-291, the response of the automatic gain control to a
60 dB step function change in signal level shall be such that all
16.
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals