Here are my current guesses about the role of various connector lines
-inside the [[MultiMode II|MultiMode].
+inside the [[MultiMode II|MultiMode]].
DB-25 line descriptions
=======================
10 +15 Volts DB-25 24, Head 5 though 10 Ohms
11 Photodiode D Head 11
12 Photodiode A Head 9
-13 DG403 pin 10
+13 DG403 pin 10
14 internal plane, but not ground loop?
15 Vertical cantilever deflection 620 pin 6 (out) DB-25 11
16 DG403DJ pin 6 DB-25 11
29 Photodiode C Head 10
30 Photodiode B Head 8
31 AD620 pin 2 (in -) through R DB-25 25
-32 BBOPA2107 pin 1(out1) through R(total photodiode)
+32 BBOPA2107 pin 1(out1) through R(total photodiode)
33 DG403 pins 1 and 3 (drains from 1)(Horizontal deflection) DB-25 21
34
========= ========================================================= ===============================
Manual switch connector line descriptions
=========================================
-Line Color Role To
-1 Orange Laser LED ?
-2 White-red STM mode LED DB-25 17
-3 Green Mode TM Main 13
-4 Blue Mode STM 120 Ohms to DB-25 17
-5 Purple Stepper direction Main 6
-6 White-brown Stepper switch +5 Volts Main 7
-7 White Laser LED? DB-25 17
-8 Yellow Laser LED?
-9 White-brown STM mode LED 160 ohms to DB-25 17??
-10 Red Mode AFM/LFM, +5 Volts DB-25 14
-11 Grey Stepper enable Main 24
-12 Black Stepper switch Gnd Main 5
-
+See my [[switch notes|stepper/switch]] for details on understanding
+the stepper control switch.
+
+==== =========== ======================= ======================
+Line Color Role To
+==== =========== ======================= ======================
+1 Orange Laser LED ?
+2 White-red STM mode LED DB-25 17
+3 Green Mode TM Main 13
+4 Blue Mode STM 120 Ohms to DB-25 17
+5 Purple Stepper direction Main 6
+6 White-brown Stepper switch +5 Volts Main 7
+7 White Laser LED? DB-25 17
+8 Yellow Laser LED?
+9 White-brown STM mode LED 160 ohms to DB-25 17??
+10 Red Mode AFM/LFM, +5 Volts DB-25 14
+11 Grey Stepper enable Main 24
+12 Black Stepper switch Gnd Main 5
+==== =========== ======================= ======================
AFM head micro-D 15 connector line descriptions
===============================================
1 Laser Ground DB-25 17
2 Photodiode ground Main 28
3 +5 Volts Laser Power no main, no DB-25 ??
-4
+4
5 +15 Volts DB-25 24 through 10 Ohms
6 STM current? Jumper 1, tipholder 2
7 -15 Volts DB-25 9 through 10 Ohms
15 Tapping-piezo voltage Main 22, tipholder 6
==== ============================================================= ========================
-(see, e.g. Glenair_) for Micro-D-Subminiature connector descriptions.)
+(see, e.g. Glenair_ for Micro-D-Subminiature connector descriptions.)
.. _Glenair: http://www.glenair.com/micro-d/index.htm
DB-25 labeled HV: 5,7,18,20,22
-==== ======== =================
-Line Role To
-==== ======== =================
-1 Ground DB-25 8, Jumper 8
-2 no db
-3 no db
-4 +Y piezo DB-25 18
-5 -Y piezo DB-25 5
-6 +Z piezo DB-25 22
-7 Piezo cap Jumper 7
-8 +X piezo DB-25 20
-9 -X piezo DB-25 7
-==== ======== =================
+==== ========= =================
+Line Role To
+==== ========= =================
+1 Ground DB-25 8, Jumper 8
+2 no db
+3 no db
+4 +Y piezo DB-25 18
+5 -Y piezo DB-25 5
+6 +Z piezo DB-25 22
+7 Piezo cap Jumper 7
+8 +X piezo DB-25 20
+9 -X piezo DB-25 7
+==== ========= =================
Jumper pin descriptions
=======================
Pin Role To
=== ======================== =========================
1 +5 V Big regulator
-2 Total photodiode voltage
-3 -15 Volts
-4 +15 Volts
-5 Manual switch STM mode
-6 Head Gnd?
+2 Total photodiode voltage
+3 -15 Volts
+4 +15 Volts
+5 Manual switch STM mode
+6 Head Gnd?
7 Main 16
8 Ground Black loop
-9
+9
10 Horizontal deflection top center BBOPA though R
=== ======================== =========================