TELEREADER CWR-685E - 3 Input;Output Actions; Actions of Switches

To Next Page

To Previous Page

GAIN VR in the rear panel, and is synthesized with the signal of CW monitor OSC at 800 Hz

which is delivered from J3-7 on main PCB (in actual operation, either one signal only is gi-

ven here). After level adjustment at AFSK GAIN VR, the signal is fed again to J4-1 terminal

on MODEM PCB, and reappears at J4-4 terminal as AFSK signal having shaped waveform,

and is delivered from the AFSK OUT terminal in the rear panel.

The AFSK monitor speaker drive output which is delivered from J3-8 terminal on MODEM

PCB is once fed to J10-10 on the main PCB, and is synthesized with the CW monitor spea-

ker drive output, and then delivered to J9-6 terminal. This output signal is applied to the

VOLUME slide VR in the front panel to be controlled in the sound volume, and drives the

built-in output monitor speaker or PHONE output terminal in the rear panel.

3. Input/output actions

3.1 Actions of switches

RESET PB

Only while it is being depressed, the J7-2 terminal on main PCB is connected to GND.

FILTER

In OFF position, the J7-3 terminal on main PCB is connected to GND.

In ON position, the J7-4 terminal on main PCB is connected to GND.

SPACE NARROW

In NARROW position, the J7-5 terminal on main PCB is connected to GND.

CWIDA/CWIDB

In CWID A position, the J706 terminal on main PCB is connected to GND; in CWID B, the

circuit is open.

PAGE PB

While it is being depressed, the J7-8 terminal on main PCB is connected to GND; when it is

not pushed, the J7-7 terminal on main PCB is connected to GND.

MODE A/MODE B

In MODE B, the J7-9 terminal on main PCB is connected to GND.

CW/RTTY

In RTTY position, the J7-11 terminal on main PCB is connected to GND; in CW position, the

J1-7 terminal on MODEM PCB is connected to GND.

ASCII/BAUDOT

In ASCII position, the J7-12 on main PCB is connected to GND.

LTR PB

Only while it is being pressed down, the J7-14 on main PCB is connected to GND.

FIG PB

Only while it is being pressed down, the J7-13 on main PCB is connected to GND.

LOCK U.O.S.

When turned on, the J7-15 terminal on main PCB is connected to GND.