AR 1000S1G6C, Руководство по эксплуатации и обслуживанию

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Model 1000S1G6C
Rev A 55
4.3.1 General - Reading Faults
The Model 1000S1G6C incorporates relatively simple fault detection circuitry, which makes use of the digital
display panel to alert the user or technician which component(s) need service. Use of these indications can
usually expedite troubleshooting of the amplifier. Most faults can be immediately determined down to the
assembly level. If a reset is still indicated, turn off the RF power signal to the input of the amplifier, read and
record the fault indication displayed on the digital control panel for later reference. Then, use the RESET
function to see if the fault clears. If the fault clears, slowly bring the amplifier’s drive level back up and ensure
that recommended RF power levels are not exceeded. If the fault indication is no longer visible, the fault may
have been brought about by a temporary transient condition, component thermal condition or excessive RF
drive to the amplifier’s input. If the fault does not clear with the RF drive off, some other problem exists in the
amplifier.
The digital control panel of the 1000S1G6C indicates the output power from the 1000S1G6C and the power
reflected back to it. If the reflected power is very high, with respect to the forward power, this could indicate
that the output coax cable is defective or that the load being driven has a high VSWR.
4.3.2 The Unit Cannot Be Operated Remotely
1. Verify that the front panel key-switch is set to the REMOTE position.
2. Verify that the unit operates locally by setting the key-switch to the LOCAL position; if the unit does not
operate locally, see 4.3.1.
3. Check the position of the ADDRESS via the control software on the front panel touch screen. (See Section
2 of this manual for the proper ADDRESS settings.)
4.3.3 Thermal Fault (Diagram No 10050943,10051749)
During a Thermal Fault, the front panel display should read THERMAL FAULT.
1. Try to reset the unit; if the unit resets and operates normally, check to see that the cooling fans (B1-B33)
are operating normally and that the air inlets on the bottom and side covers of the unit and the air outlets on
the rear of the unit are not blocked.
2. If the unit does not reset and the cooling fans are operating normally, check the voltage at the A25A3 Switch
Breakout Assembly, J5, Pins 23-28 or A29 Switch Breakout Assembly, J5, Pins 10-20.
3. If the voltage on A25A3 J5, Pins 23-28 or A29 J5, Pins 10-20 is low, check the thermal sensor to the
designated module.
4.3.4 Interlock Fault (Schematic 10050943,10051749)
The Model 1000S1G6C is equipped with an interlock connector, which is located on the rear panel. The
interlock circuit can be used to sense the openings of doors to screen rooms, test chambers, and so forth, and to
turn off RF energy when these doors are opened.
NOTE: The Model 1000S1G6C is shipped with a mating connector, which has a jumper between Pins 1 and 8
and 10 and 14, installed in the rear panel interlock connector. The unit will not operate unless the
interlock circuit is closed.