 |
|||
|
|
|||
| ||||||||||
|
|  MIL-N-81207A(AS)
of the first pulse to the leading edge of the second pulse. The
X-Mode air-to-air interrogating pulse pair spacing shall be 12
0.10 microseconds.
Pulse Coding (Y Mode Channels) - The
305.108.3
transmitted interrogating pulses will be coded in pairs with
a
spacing which shall be 36 0.10 microseconds as measured at
the
50 percent maximum voltage amplitude points from the leading
edge
The Y
of the first pulse to the leading edge of the second pulse.
Mode air-to-air interrogating pulse pair spacing shall be 24
0.10 microseconds.
Transmitter Power Output
3.501.9
Transmitter Power in T/R Mode - When the
3.5.1.9.1
equipment is interrogating a beacon in the T/R mode, the peak
power of each pulse transmitted during the search condition shall
not be less than 1.5 kw nor more than 3.0 kw on all channels when
the transmitter is terminated in a 50 ohm resistive lead
impedance. The transmitted peak output power shall not drop below
0.95 kw with a two to one standing wave ratio of any phase angle
at the transmitter. The two pulses in an interrogating pulse pair
shall not differ in power by more than 0.5 dB when the load
impedance is 50 ohms.
Transmitter Power In A/A Mode - With the
3.5.1.9.2
equipment operating in the A/A mode at a transmitting rate of 150
The transmitter
PP/S, the requirements of 3.5.1.9.1 shall apply.
power shall recover to within 2 dB of the maximum peak power
within 18 microseconds after any transmission and shall be at
least 750 watts when the transmitter rate is 1200 pulses per
second.
Effect of Transmitter Power on Other Functions
3.5.1.9.3
In the BCN mode, prior to amplitude modulation by the antenna of
the composite RF pulse train, the 15 Hz component of any amplitude
modulation shall not exceed 1.0 percent. This shall be measured
with the transponder operating normally and shall include the
effects of droop and recovery time of the main reference group.
On Frequency and Imaqe Frequency Interference
3.5.1010
With the equipment tracking on a signal of -80 dBm, the specified
performance shall not be affected by the following types and
levels of interference at any frequency on or within 3 MHz of the
desired or image frequency.
25.
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals