Filter
Top Products
Assembly Replacement ESG Family Signal Generators
AT1 Mechanical Attenuator
5-48 Service Guide
AT1 Mechanical Attenuator
Tools Required
• T-10 TORX screwdriver
• 5/16-inch open-end wrench
Removal
1. Remove the instrument cover. (Refer to the “Instrument Cover” replacement procedure
on page 5-64.)
2. Remove the top cover by removing the 11 screws that secure it.
3. If you have Option 1E6, disconnect W45 and W47 from the pulse modulator (A25) and
A25W1 from the CPU/motherboard (A14). (See Figure 5-29.)
If you do not have Option 1E6, disconnect W14 from the mechanical attenuator (AT1).
(See Figure 5-30.)
4. Disconnect A19W1 from the CPU/motherboard.
5. Disconnect W9 from the RPP (A19).
6. Disconnect W13 from the CPU/motherboard.
7. Remove the two screws (item 1) that attach the attenuator/RPP assembly to the
instrument chassis.
8. Tilt the assembly away from the chassis wall, then carefully lift it out of the instrument.
NOTE There are two hinged tabs at the bottom of the attenuator/RPP assembly that
fit into slots in the instrument chassis. Therefore, it is necessary to tilt the
assembly away from the chassis wall so that the tabs can be guided out of the
slots.
9. Disconnect W20 from the RPP and the mechanical attenuator (AT1).
10.If you have Option 1E6, disconnect W46 from the pulse modulator and the mechanical
attenuator. (See Figure 5-29.)
11.Remove the four screws (item 2 in Figure 5-31) that attach the RPP bracket (item 3) to
the attenuator bracket (item 4).
12.Remove the two screws (item 5) that attach the attenuator bracket to the mechanical
attenuator (AT1).