Telex C-6200 Manual

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 1 o 18
Entering the Setup Mode
Setup of the C-6200 is almost entirely done using a web browser. The first step required during setup
is to assign the Ethernet and Mas addresses to the C-6200. This is done through the front panel. To
enter the front panel setup mode, press and hold MUTE-F16-GRP.
Setting the System Clock
Pressing PROG1 from the top-level setup menu will open the screen to set the internal Real Time
Cloc . PROG1 selects the Edit option that allows setting of the actual minutes and hours. PROG2
sets AM or PM., PROG3 selects 12 or 24-hour mode, PROG4 returns to the previous setup screen.
The cloc can also be directly setup by pressing MUTE-F16-C1. This ey sequence bypasses the
PIN number and the main setup screen.
Setting the PIN number
The Pin number is used to prevent unauthorized modification of operation parameters. When a PIN
number is set, the C-6200 will prompt for it before allowing entry into the setup mode. The web-
based setup for the C-6200 also has provision for a user password; it is the same four-digit value as
the PIN number entered from this menu option. Selecting PROG3 from the main menu will cause
the C-6200 to prompt for the new PIN number twice. If both are entered identically, the new PIN
number will ta e affect.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 2 o 18
Setting the basic IP information
As was mentioned before, all other parameters are setup by using a browser such as Netscape or
Internet Explorer. Before connecting to the console with the browser, an IP address and Mas that is
compatible with the users existing networ must be set. Figure 7 shows the screen selected when
PROG2 is pressed from the main setup screen. See your networ administrator to determine the
proper values. The following eys are used to enter the IP dotted quad once PROG1 or PROG2 is
pressed.
DTMF 0- : The DTMF digits allow entry of the specific
numbers .
DTMF A: DTMF digit A is the decimal point used in
dotted quad PROG4: The “bac ” ey is pressed when the
dotted quad has been entered.
PROG1: The “Clr” function clears the current entered
value and starts over.
PROG2: The “Del” function deletes the last entered
number.
Once these values have been set, the unit must be
reset for them to take affect. It is now possible to
connect to the C-6200 with a computer and web browser.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 3 o 18
C-6200 Backplane connections
Battery backup:
The Auxiliary power input (3-Pin terminal bloc ) is a diode-protected +12V input used for battery
bac up. Pin (E) is also connected to the chassis allowing for positive grounding of the unit.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 4 o 18
Auxiliary Speaker:
The DB9 SPKR/FS connector has Selected, Unselected and Crosspatch audio outputs for driving
external 8-ohm spea ers.
Footswitch:
The DB9 SPKR/FS connector provides footswitch and ground connections. This input acts as a
console PTT when it is shorted to ground.
Auxiliary Audio Input:
The DB25 AUX connector provides AUX Audio Input and PTT. Pulling PTT to ground activates the
Audio Input line for transmitting. This input is a high impedance capacitance coupled input.
Record Output
The DB25 AUX connector has Selected, Unselected and Crosspatch audio via 600ohm transformer
output for connection to a voice-logging recorder.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 5 o 18
Auxiliary Relay Output:
The DB25 AUX connector provides connection to the AUX relays, depending on the setting of the
AUX button in the tech mode, this output is a relay closure that can be used for whatever purpose is
required.
Auxiliary DB25 Connector:

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 6 o 18
6200TCRD - Line Ports 1- :
The C-6200 can accommodate up to 18-lines, in multiples of two. The nine-line connectors are on
the rear of the unit and are standard DB25 connectors for TCRD and RJ-12 for PCRD. The pin-outs
of the connectors appear below.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 7 o 18
Cross-mute
When a parallel console operator eys a microphone in the same room, the cross-mute function
mutes the receive audio path of the other parallel consoles. This prevents any unwanted audio loops
that would occur causing a loud squeal on the paralleled spea ers. Feedbac may be avoided by
muting the receive audio of the line card which is in parallel with a transmitting line card. This may
be accomplished by connecting pins 12 (line 1) or 6 (line 2) of each of the consoles to be cross-
muted. Pin 21 must be connected to provide a common ground and place J15 (line 1) or J14 (line 2)
into the “A” position. Note: The intercom function will not wor between cross-muted consoles.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 8 o 18
Two-Wire/Four-Wire Mode
Each Line Card comes standard with a jumper selectable two or four-wire option. Note: The Line
Cards are shipped in the four-wire mode. Two-wire mode is accomplished by the following jumper
positions:
The RX pairs are now on pins 11 and 22 (line 1), 5 and 16 (line 2) on the connector. The TX pairs
are on pins 10 and 23 (line 1), 4 and 17 (line 2) of the connector. Once transmit and receive paths are
separated, the impedance of each side must be set.

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 9 o 18
RX Side Settings
The RX side is jumper selectable for 600 or 10 ohm impedance. In 4 Wire mode, If only one
console is on the line (no parallel consoles) then place J10 (Line 1) or J8 (Line 2) in the A position
for a 600 Ohm line impedance. If more than one console is on one line, then place J10 (Line 1) or J8
(Line 2) on ONE console in the A position and all other consoles in the B position. Each console
added to the system will result in line loss. The following chart gives an indication as to how much
loss can be expected. The first console in the system is set for an impedance of 600 ohms out
(approximately). Each console added to the system thereafter is set for an impedance of 10 ohms.
As the chart indicates on the following page, the more consoles bridged on the line, the lower the
line impedance and the greater the loss in audio level.
Level adjustment can be made to the receive audio by entering the tech mode on a per line basis.
TX Side Settings

Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / [e-mail]
425.402.7308
11/5/2010 Page 10 o 18
The C-6200 TX output circuitry has a DPDT relay that is used to connect and disconnect the TX
output transformer from the TX line based on PTT status. This allows a very large number of
consoles to be attached to the line in parallel, because only the transmitting unit will be directly
connected to the line. When not transmitting, the DPDT relay is connected to 600 ohms or open
circuit depending on the number of console connected in parallel to the line. If only one console is
attached, this unit should have J9 (Line 1) or J3 (Line 2) in the “A” position. This ma es it the
effective master and terminates the line with 600 ohms. If there are more than one console connected
in parallel, one console should be designated as the master by placing J9 (Line 1) or J3 (Line 2) in
the “A” position and the remaining consoles should be designated as a slave and should have J9
(Line 1) or J3 (Line 2) placed in the “B” position. In this manner, the impedance loo ing bac into
the parallel configuration of consoles is still 600 ohms.