Broadcast Electronics FM-5T, Руководство пользователя

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2-6
2-28. Open the cavity access door.
2-29. Disconnect the plate line B+ banana plug along the right side of the plate line.
2-30. Remove all tape and shims from the plate line at the shelf to free the plate line. Raise and
rotate the plate line to lock the plate line in the up position.
2-31. Carefully remove all packing material from over the tube socket.
2-32. Carefully install the PA tube with a steady downward pressure. Do not rotate or rock the
tube during installation or the tube socket may be damaged.
2-33. After the PA tube is fully seated, rotate and lower the fixed portion of plate line over the
PA tube. Slowly lower the fixed portion of plate line down with both hands until the plate
line stops contact with the cavity shelf.
2-34. Reconnect the plate RF choke banana plug into the plate line and verify that the choke is
straight and perpendicular to the line with all connections secure. The plate line may be
rotated as required. The choke turns do not touch when properly aligned.
2-35. Secure the plate line to the tube with the strap clamp provided until the line does not slip
from the PA tube when upward pressure is applied. A flat-blade screwdriver with a 1/4
inch tip is required.
2-36. Close and latch the cavity access door.
2-37. On top of the cavity, loosen the PA tuning line clamp. A flat-blade screwdriver with a 1/4
inch (0.64 cm) tip is required.
2-38. Raise the PA tuning line until the scribed line is aligned with the top of the cavity clamp
ing flange. Ensure the tuning line is perpendicular to the top of the cabinet and secure the
strap clamp.
2-39. Ensure the coarse PA input tuning cyclometer on the rear of the PA input enclosure is set
to the value listed on the factory final test data sheets and the control is locked.
2-40. Remove the slide retainers from the exciter.
2-41. Loosen the exciter front-panel turn-lock fasteners and extend the unit forward.
2-42. Loosen the eight turn-lock fasteners on top of the exciter and remove the top cover.
2-43. Remove any packing material from the inside of the exciter.
2-44. Ensure the POS-MUTE-NEG switch on the power supply/control circuit board is oper
ated to POS.
2-45. Ensure the NORM-EXT switch is operated to NORM .
2-46. Refer to the final test data sheets shipped with the transmitter and ensure the AFC/PLL
assembly SYNTHESIZER FREQUENCY SELECTION switches are correctly positioned.
2-47. Replace the exciter top-panel.
2-48. Optional Equipment. If the transmitter is equipped with the optional LYNX stereo gen
erator and the FC-30 SCA generator, refer to the LYNX and FC-30 instruction manuals
and perform any unpacking and programming checks described in SECTION II, INSTAL
LATION.
2-49.
REMOTE CONTROL.
2-50. The FM-5T/FM-5TS transmitters are designed for complete remote control operations (re
fer to Figure 2-3). The transmitters will interface with almost any remote control unit
such as the Broadcast Electronics VMC-16 Voice Remote Control System. The following
text presents a description of the FM-5T/FM-5TS remote control functions and indica
tions. The remote control connections are located on the transmitter remote interface pan
el (refer to Figure 2-3).