Watkins-Johnson Company WJ-8718A/MFP Instruction Supplement page 94

WJ-8718A/MFP
Table 3-16. Address 1011 (U5) Data Word
Output Function
Q7
BFa Inhibit
Q6
16 kHz (A) IF Bandwidth
Q5 AGC Dump
Q4 16
kHz
(B) IF Bandwidth
Q3
6 kHz IF Bandwidth
Q2 3.2
kHz
IF Bandwidth
Q1
1 kHz IF Bandwidth
QO .3
kHz
IF Bandwidth
TABLE 3-16
TABLE 3-17
3.2.5.8 Gain/Detector Mode (U9)
Table 3-17 is the data word for U9. The microprocessor updates receiver gain and
detection mode parameters by writing the data into register U9. The Q outputs connect to the
detection mode and AGC circuits in the IF section of the receiver. A high logic l.evel indicates
the selected gain or detection mode and activates the IF circuit to initiate the parameter
change.
Table
3-17.
Address
1012 (U9)
Data Word
Output Function
Q7 SLOW AGC
Q6 MAN AGC
Q5 LSB
Q4 ISB
Q3 USB
Q2
CW
Q1 FM
QO AM
3.2.5.9 Local/Remote Select (U21B)
Register U21B (address 10lD) provides a select level to .gain voltage switch U22.
The microprocessor reads the status of the front panel REMOTE and LOCAL switches,during a
read operation on the Front Panel Encode Board (MFP-A1Al), to determine if the r·eceiver is in
the local or remote operating mode. The local/remote status is contained in the LSB of the
local/remote data byte in a remote monitor operation. The bit is low if the receiver is in local
mode and high if the receiver is in remote mode. The logic level is appli.ed to the
D
input of the
3-39