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Electronic Theatre Controls Inc

Response 32 Out and A32 Out

The Response 32 out was a compact 32 channel digital to analog (de-multiplexer) unit. The standard 32 out accepted DMX-512 only; the A32 out could also receive AMX.


Response 32 Out-A32 Out.jpg

DMX address was set with three thumb wheels on the front panel. Analog input is via a Centronics type connector.

RESPONSE 32 OUT/A32 OUT

PINOUTS

DMX DATA PINOUT

Pin Function
1 Common
2 Data -
Data +

AMX DATA PINOUT

Pin Function
1 Common
2 Clock +
3 Clock -
4 Analog

ANALOG OUTPUT PINOUT

Pins Function
1-32 Channels (1-32)
35,36 Common

SWITCHES

DATA TYPE SELECTION

Dipswitch Settings

  SW1 SW3
DMX Up Down
AMX Down Up

FILTERS

Dipswitch Settings

Filters SW5 SW6
None Down Down
Small Down Up
Medium Up Down
Large Up Up

SELF TESTS

910 CHASE*
920 FADE ALL*
930 FADE CHASE*
940 SELECTED OUTPUT TO FULL
950 ALL TO PERCENT
960 ALL TO DMX LEVEL

TRIM POTS

RIGHT AMX MAX
CENTER FULL ADJUST
LEFT ZERO ADJUST

NOTES

  • Self tests with * use third digit for speed
  • Address at specific dimmer number
  • Trims are interactive
  • 5mA/output, 160mA/unit
  • 0-3vdc min. level, 5-12vdc max. level
  • Older version had separate infra red diode and infra red sensor, instead of opto-coupler IC. The separate components usually had some kind of cover over them to prevent light from affecting the function of those components. The cover was either a rubber dome, or heat-shrink tubing.

LED OPERATION

The top LED is DMX input status. Solid ON is Receiving Data. Blinking is Invalid Data or No Data
The bottom LED is +5V and should be solid on

TROUBLESHOOTING

Channels 20-24 all turn on together

RP2 is likely cracked in half or failed. OpAmps could also have failed

Outputs are flickering

C4 is probably failing

No output on normal, but works fine with self-test

DIP switches are probably not set correctly. Be sure DIP switch 3 is down

If DIP switches are correct, possibly a bad DMX chip or DMX opto-isolator
U2 is DMX chip, U22 is opto-isolator. There are no spare internal DMX chips

DMX Status LED is solid on regardless of DMX being plugged in or not

C4 failing. Outputs are also very likely flickering

 

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