Honeywell RESCU 406AFN Component Maintenance Manual With Illustrated Parts List page 41

COMPONENT MAINTENANCE MANUAL
b
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:
•
•
•
•
•
•
•
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.
© Honeywell International Inc. Do not copy without express permission of Honeywell.
1152682
Record this value as the 406.028 MHz output power, which shall be
greater than +35.0 dBm.
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
23-24-02
Page 108
Oct 27/06