GE ApexPro TT, Technical Manual

Page: 80 / 192

4-18 ApexPro™ 2001989-351A
Maintenance
c. Type ss and press Enter to confirm settings. You should see
RX 1 AP 1 FQ 600000000
d. The target frequency when using the 600000000 Hz reserved frequency is
513.15 MHz (513150000 Hz).
e. Proceed to Determine frequency offset on page 4-18 .
10. If beds are admitted, perform the following steps:
a. Choose one of the admitted beds from the list shown and use that frequency
for the following.
b. Calculate and record the target frequency:
displayed frequency from the list - 86.85 MHz = target frequency
_____________________Hz - 86850000 Hz = ___________________Hz
NOTE
Multiply MHz by 1000000 (one followed by six zeros) to convert to Hz.
c. Proceed to Determine frequency offset on page 4-18 .
Determine frequency offset
1. Connect a rubber duck antenna to the spectrum analyzer and the antenna. If
desired, use a short 75 Ohm jumper cable to connect the antenna to the spectrum
analyzer.
2. Remove the front cover of the receiver, as shown, and place the antenna very
close to the receiver cards.
404A
3. On the spectrum analyzer, press PRESET .