Calypso CA-500 User Manual page 5

1.2.2 Serial Programming/Control Cable
Solder wires to pins 2, 3 and 5 of a female, 9-pin RS-232 connector
Connect the wire on pin 2 (Rx) to pin 2 (Tx) of a 3-pin screw-down terminal block
Connect the wire on pin 3 (Tx) to pin 1 (Rx) of a 3-pin screw-down terminal block
Connect the wire on pin 5 (Gnd) to pin 3 (Gnd) of a 3-pin screw-down terminal block
Plug the terminal block into the 3 pin slot on the right side of the unit and plug the DB9
connector into your computer s serial port
1.2.3 Channel 1 Audio Input
Channel 1 input will accept a balanced or unbalanced stereo input via a 5-pin screw-down
terminal block.
1.2.4 Channel 2 Audio Input (CA-1000 and CA-1050 only)
Channel 2 will accept an unbalanced stereo or mono input via an 1/8 inch mini audio jack.
1.2.5 Channel 3 Audio Input (CA-1000 and CA-1050 only)
Channel 3 will accept an unbalanced stereo or mono input via an 1/8 inch mini audio jack.
1.2.6 Channel 4 Audio Input (CA-1000 and CA-1050 only)
Channel 4 will accept a mono input via a 2-pin screw-down terminal block on the left side
of the unit.
NOTE ON CHANNEL INPUTS: All channels are stereo (ch1, ch2, ch3) except channel4 (mono).
Channel 4 has a permanent jumper linking its left and right sides. Channels 1 through Channel 3
have separate left and right stereo lines. While monitoring for microphone input levels (typically,
but not necessarily on channel 4), the system searches only the LEFT side. Hence single
channel microphones must be connected to the LEFT side input. Alternatively, the channel
used for microphone input should be set to operate in mono mode.
1.2.7 Speakers (4 ohm and 8 ohm)
Left and right 4 or 8 ohm speakers are wired via a 5-pin screw-down terminal block found
on the right side of the unit. Two pins are used for the left speaker, two are used for the
right speaker and the middle pin can be used as a common ground.
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