COMPONENT MAINTENANCE MANUAL
1152682
Page 108
Oct 27/06
© Honeywell International Inc. Do not copy without express permission of Honeywell.
23-24-02
b
Record this value as the 406.028 MHz output power, which shall be
greater than +35.0 dBm.
5
Place the switch on the transmitter unit back to the OFF position.
(5)
406.028 MHz Carrier Frequency, Test # 5
(a)
Equipment Required
1
HP 8590 spectrum analyzer (or equivalent)
2
30 dBm attenuator
(b)
Test Procedures
1
Connect the transmitter unit to the spectrum analyzer using a co-axial cable
(preferably low-loss) of known db loss and place the 30 dBm attenuator in
between so that the power rating of the spectrum analyzer is not exceeded,
resulting in damage to the equipment.
2
Set the spectrum analyzer as follows:
•
Center Frequency: 406.028 MHz
•
Span: 100 kHz
•
Resolution Bandwidth: 1 kHz
•
Video Bandwidth: 1 kHz
•
Sweep Rate: 250 ms
•
Max Hold A: On
•
Reference Level: 10 dBm
3
Activate the transmitter unit by moving the switch on the transmitter unit from
the OFF position to the TX position.
4
Press TRACE, CLEAR WRITE A, and MAX HOLD A on the spectrum
analyzer. This configures the HP 8590 to capture the peak signal level
detected and continuously display it on the screen between analyzer
frequency sweeps. Allow 406 MHz transmission bursts to occur. As the
screen fills up with the spectrum trace, use PEAK SEARCH to find the carrier
peak. Record the frequency value indicated on the analyzer screen as the
406 MHz carrier frequency, which shall be 406.028 MHz ±2 kHz.
5
Place the switch on the transmitter unit back to the OFF position.
(6)
Automatic Activation Test, Test # 6
(a)
Equipment Required
None.