NEC DTU-70 Instruction Manual page 71

18kw uhf digital tv transmitter
Table of Contents

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Use
No.
Item
15
PA OUTPUT FAULT
16
(APA OUTPUT
FAULT)
17
PA REFLECT FAULT
18
(PA REFLECT FAULT)
19
PA PS FAULT
20
PA TEMP FAULT
21
(APA TEMP FAULT)
22
PRESSURE FAULT
23
PUMP-A FAULT
24
PUMP-B FAULT
25
PUMP-A AC FAULT
26
PUMP-B AC FAULT
27
(H.EXC-A FAULT )
(WARNING)
28
(H.EXC-B FAULT)
(FAULT)
29
GO HOME
WATER TEMP HIGH
30
WATER LEAK
31
Table 3-10 (continued)
Terminal No.
+
-
15
41/42 The output power of some PAs is 2dB
below the preset level.
16
41/42 (Reserved)
17
41/42 The reflected power of some visual PAs is
over.
18
41/42 (Reserved)
19
41/42 Means that the PA PS is under the abnormal
condition.
20
41/42 Means that the temperature on the chassis of
PA has exceeded the set point.
21
41/42
22
41/42 Means that the pressure of the coolant
became lower than the set point.
23
41/42 The water pressure in the pump is abnormal.
24
41/42
25
41/42 Over-current occurred in AC input of the
water pump causing the thermal relay to
26
41/42
actuate.
27
41/42
One fan for H. EXC is abnormal.
28
41/42 One or more of fans for H. EXC. are abnormal.
29
41/42 Means all auxiliary switches of cooling
system are ON state.
30
41/42 Means that the temperature of the cooling
water became higher than the set point.
31
41/42 Means that the coolant leak
3 - 23
GWP-G22996
Description

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