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Tektronix 492 - Page 288

Tektronix 492
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Product: 492/492P Service Vol. 1
D ate:
__
5-2 -8 4
Change Reference:
__
C101/584
n
DESCRIPTION
□
i. Check Forward Gain
1. Return the TR502 Output Level to -25 and remove the connection
to the module IF OUT.
2. Connect a 50 ohm termination to the IF OUT (P1024) connector.
3. Connect the OUT (P1012) connector to the 7L14 RF Input with a 50
ohm cable.
4. Adjust the 7L14 Reference Level until the displayed signal is near
full screen <8 divisions).
5. Check that the signal displayed on the 7L14 indicates -20dBm to
-23 dBm (-21. 5 dBm +/-1. 5 dBm).
f t
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f t
f t
f t