Harris Platinum HT EL 2000LS, Техническое руководство

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is 30 volts DC maximum, and maximum current must be limited
to 48 Ma. Each output is asserted low for status true condition.
2.7.3
Status Functions 1A12J22
PIN FUNCTION
1-16 Common (+12V or gnd JP-4 & 5 opt)
17-19 Not used
20 Transmitter ON status
21 Local status
22 Loss of video status
23 Frequency unlock status
24 Corrector bypass status
25 RF muted status
26 Air fault status
27 High vswr status
28 Foldback active status
29 Module fault status
30 50 volt power supply fault status
31 External interlock status
32 Exciter switcher auto selected (option)
33 Exciter switcher manual selected (option)
34 Exciter switcher A selected (option)
35 Exciter switcher B selected (option)
36 No connection
37 No connection
LOCAL: Indicates the transmitter will not accept remote com-
mand inputs. This line will be asserted low when the transmitter
is in the LOCAL mode.
VSWR FOLDBACK ACTIVE: Indicates antenna VSWR has
caused the transmitter to reduce its output power. It will be
asserted low while the foldback is active.
HIGH VSWR(VSWR FAULT): Indicates the modules have not
come up to power at the end of three seconds after a VSWR
overload set point has been exceeded. Note that active fold-back
will inhibit VSWR overload detection. Upon detection of an
overload, this line will be asserted low.
EXTERNAL INTERLOCK: Indicates the status of the external
interlock. If the interlock is open, a low will be asserted.
RF MUTE: Exciter mute: Indicates that some function has
muted the exciter. Asserted low for mute.
EXCITER FAULT: Indicates exciter fault directly in single
exciter configuration. Asserted low for fault.
SUPPLY FAULT: Indicates the 50 volt power supply has failed.
Asserted low upon fault.
MODULE FAULT: Indicates one or more of the cabinet RF
modules has faulted off. Asserted low upon fault.
AIR LOSS: Indicates a loss of air flow. Asserted low upon loss
of air flow.
SPARE FAULT: Not used at this time.
2.7.4
Analog Outputs 1A12J23
The analog outputs on the I/O panel provide both calibrated and
un-calibrated readings for some functions. The calibrated out-
puts are a function of the monitoring system. The raw outputs
come directly from the RF peak detectors. Each output is buff-
ered by a voltage follower, with a 1 k Ohm resistor in series with
the signal, before leaving the main controller board.
PIN FUNCTION
1 Visual forward power
2 Visual reflected power
3 Aural forward power
4 Aural reflected power
5 50 volt power supply voltage sample
6 50 volt power supply current sample
7 +5 volt logic supply voltage sample
8 +12 volt logic supply voltage sample
9 -12 volt logic supply voltage sample
10 Inlet temperature
11-14 Not used
15 Exciter status: A Failed
16 Exciter Status: B Failed
17-19 No connection
20-35 COMMON
36-37 No connection
Figure 2-2.
Section II - Installation
888-2457-001 2-7
WARNING: Disconnect primary power prior to servicing.