Rane MPE MIDI Programmable Equalizer - Manual (Page 5)

5 Rane MPE Users Guide
Selecting The SYSTEM Display Base
Remember when your sadistic high school math
teacher made you perform impossible arithmetic in
different numerical bases? Well, Freddy Krueger
returns… Actually, this option is provided to clear
up the confusion that arises when your MIDI devices
hurl decimal and octal numbers at each other, and
expect you to sort out the mess.
If you are leery about the differences between the
decimal and octal numerical bases, please visit the
side bar on the following page.
To toggle the numerical base of the SYSTEM
display, press and hold the MEMORY key and then
tap the MAP key. Voila! You’re now looking at the
same number as before, but in the opposite base.
Tip: Be careful to press the MAP key after the
MEMORY key, and release it before the
MEMORY key. If you don’t, the MPE pops you
into the Program MIDI Map function. If this hap-
pens, hit the MEMORY key twice to re-enter
Normal Operating mode.
Number entry for octal is similar to decimal, with
two basic differences. First, only the numerals 1-8
are used. If you press the 0 or 9 keys in octal mode,
you will be scolded by the MPE. The second differ-
ence is the 100 key now assumes the role of OC-
TAL A/B (see the side-bar on the next page if you
don’t know A from B ). Pressing OCTAL A/B
toggles the third digit of the octal number between
groups A and B. Experiment with the two bases for
awhile, you’ll see how it works.
Scrolling Through Stored Memories
With The UP and DOWN Keys
If you wish to recall the next or previous Stored
Memory, press the UP or DOWN key to increment
or decrement the current Stored Memory number in
the SYSTEM display. Holding either key down for
a prolonged period causes the MPE to scroll through
Stored Memories. If the bank is held, only the ones
digit scrolls (i.e., in our earlier bank hold example,
you scroll through numbers
100-101-102…
109-100 and so on).
So, we’ve now recalled a Stored Memory, in
either the decimal or octal format, with the bank held
or released. The contents of the recalled Stored
Memory occupy Working Memory. Let’s change the
equalizer parameters…
That’s all. The Stored Memory corresponding to
the number you just typed in is immediately trans-
ferred to Working Memory. The rate at which the
equalizer changes to these new parameters is deter-
mined by the ramp step size (more on this later).
There are three variations to the process described
above. These involve the bank hold/release option,
the octal/decimal numerical base option, and scroll-
ing with the UP and DOWN keys. Let’s take a look
at each in detail.
Bank Hold/Release
The above process of entering a number requires
two key presses for numbers between 01-99, and
three key presses for numbers 100 and above. The
bank hold option allows you to freeze the hundreds
and tens digits of the current number, and enter new
numbers by selecting only the ones digit. This
enables recall of any of ten different Stored Memo-
ries with one key press.
When the BANK key is pressed, the decimal
point to the immediate right of the tens digit in the
SYSTEM display illuminates. The digits to the left
of the decimal point (hundreds and tens) determine
the current bank. The digit to the right (the ones
digit), is the position pointer (see the figure below).
Within the held bank, you choose new positions by
pressing one key ( 0-9). There are ten possible posi-
tions within any bank (except for bank 12, which has
9 positions:
12.0-12.8).
Pressing the BANK key a second time releases the
current bank, returning you to normal number entry.
Note: Anytime you change to a different user
mode or function, the bank releases automatically.
As an example, say you just recalled Stored Memory
108. If you press the BANK key, you will get the
display shown above. Now, if you press any of the
number keys (0-9), you will instantly access Stored
Memories
100-109. Pressing the BANK key
again releases the bank, turning off the decimal point
and returning you to normal number entry.