Model 700 Programmer – Operations Manual
© Sequential Circuits Inc. 1979 PDF Version by the Emulator Archive 2002 Page 2
PROGRAMMER OPERATIONS MANUAL
1.0 Operation
The Model 700 Programmer consists of two envelope generators and three
general-purpose voltage sources, all of which are connected to the synthesizer
that is going to be controlled. Envelope 1 should be connected to the VCA, and
Envelope 2 should be connected to the filter control input. The voltage sources
are usually patched to three VCOs. The 700 also requires a gate signal. A switch
trigger (Moog), or a gate and a trigger can also be connected when available.
More detail for connection to individual synthesizers is contained at the end of
this manual.
1.1 Memory Selection
There are eight PROGRAM SELECT pushbutton switches that select one of
eight different programs. When selected, the corresponding LED indicator on the
switch will light. The MEMORY BANK rotary switch can select one of eight
different memory banks. Each memory bank contains a different set of eight
programs; hence 64 (8 x 8) different programs can be selected at any time. The
current bank and program numbers are displayed on LED numerical displays for
quick reference.
The current program can also be changed by an external signal input to the
PROGRAM INCREMENT socket. The footpedal provided can be connected to
this input, so that each time the footpedal is hit, the program will increment. Any
other general-purpose pulse of sufficient duration (greater than 10 milliseconds)
will also increment the program when connected to the PROGRAM
INCREMENT. This input is de-bounced so that relatively noisy signals can still be
used. The maximum frequency that can be used is approximately 20 Hz. The
EDGE switch selects whether to increment the program on the rising edge of the
signal (
) or on the trailing edge of the signal (
). The SEQUENCE LENGTH
rotary switch is used to select how many programs to cycle through before
resetting to program 1. That is, if the SEQUENCE LENGTH is set to 3, the
program will cycle 1-2-3-1-2-3-1 etc. with each new pulse. When in the OFF
position, the incoming pulses will be ignored, and no incrementing will take place.
The pushbuttons are still active at all times, regardless of external pulses or the
setting of the SEQUENCE LENGTH switch.
