perm filename VDS.LES[H,DOC] blob
sn#056648 filedate 1974-03-14 generic text, type T, neo UTF8
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00001 00001
00004 00002 STANFORD ARTIFICIAL INTELLIGENCE LABORATORY
00009 00003 SAILON-69 Video Switch CONSTRUCTION NOTES 1
00013 00004 SAILON-69 Video Switch CONSTRUCTION NOTES 2
00016 00005 SAILON-69 Video Switch LOGICAL ORGANIZATION 3
00020 00006 SAILON-69 Video Switch LOGICAL ORGANIZATION 4
00023 00007 SAILON-69 Video Switch LOGICAL ORGANIZATION 5
00029 00008 SAILON-69 Video Switch LOGICAL ORGANIZATION 6
00032 00009 SAILON-69 Video Switch WIRE LIST 7
00035 00010 SAILON-69 Video Switch WIRE LIST 8
00037 00011 SAILON-69 Video Switch WIRE LIST 9
00040 00012 SAILON-69 Video Switch WIRE LIST 10
00042 00013 SAILON-69 Video Switch Card Signals 11
00045 00014 SAILON-69 Video Switch Card Signals 12
00048 00015 SAILON-69 Video Switch Card Signals 13
00051 ENDMK
⊗;
STANFORD ARTIFICIAL INTELLIGENCE LABORATORY
Operating Note 69 15 May 1972
Video Switch
by
L. Earnest
INTRODUCTION
The Purpose of the video switch is to distribute computer-generated
display channels from Data Disc and other television signals to any
displays that need them. Overall, it is a 40 x 64 switch with some
special features.
The switch recieves 32 black/white channels and a sync signal from
the Data Disc display generator and 7 gray-scale channels from TV
cameras, recievers, or whatever. Each of the 64 monitor (output)
channels can simultaneously view any number of Data Disc channels
and/or one TV channel. If more than one source is selected, the
instantaneous output is the "max" of the inputs, which is equivalent
to "or"ing for the binary channels.
Thus, an image from a television camera can be overlaid with a
computer-generated line drawing showing what the computer saw.
Alternatively, text might be shown on one Data Disc channel with line
drawings on another so that one can be changed without affecting the
other.
The ability to overlay video sources with binary images is limited to
sources that are synchonized with Data Disc. This is expected to
include the Quam Video Synthesizer and all TV cameras in the
laboratory, but not the Cart camera or other outside transmitters.
Thus it is not possible to simultaneously edit text and view your
favorite television program, alas.
The internal state of the switch is defined by its 2310 latches,
which are controlled by the PDP-10 IO bus. The output bandwidth of
the switch is about 10 MHz per channel, or 640 MHz overall.
CONTENTS
Section Page
1. Construction Notes 1
2. System Programming 2
3. Logical Organization 3
4. Geography 6
Appendix
A. Wire List 7
SAILON-69 Video Switch CONSTRUCTION NOTES 1
1. CONSTRUCTION NOTES
The design, construction, and debugging of the video switch consumed
about 6 man-months of effort spread over a year and a half. Lynn
Quam designed the analog video circuits, Dick Helliwell provided
drawing program services, Vic Scheinman created the BNC connector
panel, and Bridge Stuart built the TV amplifier card. L. Earnest did
the logical design, printed circuit card layout, control card and
backpanel wiring, and general hardware debugging. Fred Wright
modified the timesharing monitor to accomodate the switch.
The cost of parts, including spares, and outside services was about
as follows.
$9242 : Total parts and outside services
800 : Containers
200 : 1/4 cabinet (DEC) @ $800
600 : double card cage & sockets (Cambion)
4237 : Cards
100 : 2 wire-wrap cards & dip sockets (Cambion)
338 : PC card artwork plotting (TRW)
3450 : PC card fabrication (Teller Industries)
# type set-up unit cost
20 switch 140 110
12 mixer 90 85
349 : PC card stuff & solder (Data Pathing)
# type unit cost
18 switch 10
13 mixer 13
3600 : Components
1800 : 1400 TTL integrated circuits (Texas Instruments)
1200 : 100 MOS switches (Siliconix)
600 : discrete components
605 : Power
325 : 5 volt, 37 amp., .15% (Lambda)
130 : 5 volt, 4.4 amp., .01% (Lambda)
150 : 22 volt, 3.3 amp., .01% (Lambda)
Considering that there are 64 output channels, this is equivalent to
$143 per channel, or $3.57 per crosspoint counting both digital (32 x
64) and analog (8 x 64) crosspoints.
No dip testing was performed prior to assembly and less than 0.5% of
the TTL dips were found to be defective. Unfortunately, 18 out of 97
MOS switches were bad. I don't know whether they were dead on
arrival or were zapped later.
Four-layer printed circuit cards were fabricated by Teller
Industries, with difficulty. Of 34 cards delivered, 4 had or
developed internal shorts between power and ground planes and had to
be discarded. Another 2 had shorts between signal feedthroughs and
the power plane. These were saved by cutting traces and dip pins and
SAILON-69 Video Switch CONSTRUCTION NOTES 2
About 75% of the single-wire padless feedthroughs failed to plate
through. Fortunately, these were on guard wires and the cards were
found to work without them. Of the good boards, one took a dive in
the wave soldering machine and was lost and some feedthoughs pulled
out on another during dip replacement. Overall score: over 50% of
the cards were or became defective in some way, neglecting component
failures, and 18% were irreparable.
There are 1300 wires on the backpanel, of which 120 are twisted
pairs. It was hand-wrapped from a partial wire list and was without
connection error, although 5 or so broken wires and 2 shorts to the
ground plane were found.
2. SYSTEM PROGRAMMING
The video switch is device 340. In general, two instructions must be
executed to switch a given monitor channel, namely
CONO 340,<monitor channel #>
DATAO 340,[<channel map>]
The rightmost 6 bits of the CONO specify which of the 64 monitor
channels will be switched by the following DATAO. Bits 0 to 31 of
the DATAO word specify which of the Data Disc channels are "on", with
bit i controlling channel i. For example, [400000,,0] selects DD
channel 0, while [360000,,0] selects channels 1, 2, 3, and 4.
The rightmost 3 bits of the DATAO word select one of the TV sources
(codes 1 through 7) or none (code 0). Bit 32 (fourth from the right)
is the "asynchronous" bit. If it is "0" then Data Disc sync is
inserted. In this case, if the selected TV channel is not
synchronized with Data Disc, erroneous sync will be generated. If
the asynchronous bit is "1", then all Data Disc signals are blocked,
including sync. Thus [1,,2] overlays TV channel 2 with Data Disc
channel 17 (octal), while either [14] or [777777,,777774] selects TV
SAILON-69 Video Switch LOGICAL ORGANIZATION 3
3. LOGICAL ORGANIZATION
The video switch is composed of four kinds of card and a lot of wire.
The control card listens to the TTL IO bus through an awkward set of
connectors at its front end and produces control signals for the
other cards (see Figure 1). The TV card contains 7 identical
amplifiers that control gain and offset of TV sources. The control
card uses wire-wrap construction, while the TV card is soldered-wire.
Figure 1. Control and TV Boards
DD SYNC
_↓__ ____
¬IOS[3:9] -→| | | |
¬CONO CLR -→| |→ ¬SSj | |
¬CONO SET -→| CON|→ ¬SMk T[1:7] →| TV |→ TV[1:7]
¬DATAO CLR →| |→ Ai | |
¬DATAO SET →| |→ ¬B[00:43] | |
¬IOBD[0:35]→|____| |____|
↓
SYNC
SIGNAL NOTATION
Signal names preceded by "¬" are low true.
For integer m and n, [m:n] means m, m+1, ..., n.
i means [0:3]. Thus Ai means signals A0,A1,A2,A3.
j means 0, 2, 4, 6.
k means [0:7].
SIGNAL DESCRIPTIONS
Signals to the left of the Control board, above, are from TTL IO bus.
The other signals use octal numbers, as follows.
Ai are 4 address bits, which are latched from CONO bits 32:35. These
together with the select signals (below) determine which latches
on the Switch and Mixer boards are set.
¬B[00:43] are the same as the 36 bits of the IO bus whenever a CONO or
DATAO is being executed to this device.
DD SYNC is the sync signal from Data Disc.
¬SMk are the 8 select signals for Mixer boards. They are decoded
from latches set by CONO bits 30, 31 and 32 (decimal).
¬SSj are the 4 select signals for Switch boards. They are decoded
from latches set by CONO bits 30 and 31 (decimal).
SYNC is a buffered version of DD SYNC.
T[1:7] are the 7 video signals from cameras, video synthesizer, etc.
TV[1:7] are amplified and offset versions of T[1:7], with gain and
SAILON-69 Video Switch LOGICAL ORGANIZATION 4
The 32 x 64 digital portion of the switch is divided into a 4 x 4
array of identical switch cards, each of which is an 8 x 16 switch
(see Figure 2). These printed circuit cards have names of the form
Sij, where i is the high order (octal) digit of the Data Disc
channels connected to this board (0 through 3), and j represents the
two high order bits of the output channels from this card (0, 2, 4,
or 6). Each switch card listens to its control signals and sets
internal latches accordingly, one bit per crosspoint, and these
latches control the selection of Data Disc Signals.
There are 8 printed circuit mixer cards, one for each 8 output
channels. They have names of the form Mk, where k is the high order
digit of the monitor channel group (0 through 7). Under control of
internal latches, each monitor channel is connected to one of 8 TV
channels (including the null channel 0). If called for, sync is
inserted and combined with the outputs of the appropriate 4 switch
cards.
For more detail, see logic drawings and printed circuit artwork.
DISPLAY SIGNALS IN FIGURE 2
(See Figure 1 for notation and control signal descriptions)
¬Dik are the 32 Data Disc channel signals (TTL).
M[00:77] are the 64 output channels, which go to monitors.
¬X[000:377] are the 256 crosstie signals between the Switch and Mixer
cards. Each represents the contribution of 8 Data Disc channels
SAILON-69 Video Switch LOGICAL ORGANIZATION 5
Figure 2. Switch Cards Sij and Mixer Cards Mk
¬SS0 Ai ¬SS2 Ai ¬SS4 Ai ¬SS6 Ai
_↓_↓________ _↓_↓________ _↓_↓________ _↓_↓________
| | | | | | | |
¬B0k --→| |-→| |-→| |-→| |
| S00 | | S02 | | S04 | | S06 |
¬D0k --→| |-→| |-→| |-→| |
| | | | | | | |
|____________| |____________| |____________| |____________|
| | ↓ | | ↓ | | ↓ | | ↓
| |¬X[000:017] | |¬X[020:037] | |¬X[040:057] | |¬X[060:077]
_↓_↓________ _↓_↓________ _↓_↓________ _↓_↓________
| | | | | | | |
¬B1k --→| |-→| |-→| |-→| |
| S10 | | S12 | | S14 | | S16 |
¬D1k --→| |-→| |-→| |-→| |
| | | | | | | |
|____________| |____________| |____________| |____________|
| | ↓ | | ↓ | | ↓ | | ↓
| |¬X[100:117] | |¬X[120:137] | |¬X[140:157] | |¬X[160:177]
_↓_↓________ _↓_↓________ _↓_↓________ _↓_↓________
| | | | | | | |
¬B2k --→| |-→| |-→| |-→| |
| S20 | | S22 | | S24 | | S26 |
¬D2k --→| |-→| |-→| |-→| |
| | | | | | | |
|____________| |____________| |____________| |____________|
| | ↓ | | ↓ | | ↓ | | ↓
| |¬X[200:217] | |¬X[220:237] | |¬X[240:257] | |¬X[260:277]
_↓_↓________ _↓_↓________ _↓_↓________ _↓_↓________
| | | | | | | |
¬B3k --→| |-→| |-→| |-→| |
| S30 | | S32 | | S34 | | S36 |
¬D3k --→| |-→| |-→| |-→| |
| | | | | | | |
|____________| |____________| |____________| |____________|
↓ ↓ ↓ ↓
¬X[300:317] ¬X[320:337] ¬X[340:357] ¬X[360:377]
¬Xi0k ¬Xi1k ¬Xi2k ¬Xi3k ¬Xi4k ¬Xi5k ¬Xi6k ¬Xi7k
¬SM0 | ¬SM1 | ¬SM2 | ¬SM3 | ¬SM4 | ¬SM5 | ¬SM6 | ¬SM7 |
↓__↓ ↓__↓ ↓__↓ ↓__↓ ↓__↓ ↓__↓ ↓__↓ ↓__↓
| | | | | | | | | | | | | | | |
A[1:3] →| |-→| |-→| |-→| |-→| |-→| |-→| |-→| |
¬B4i --→| M0 |-→| M1 |-→| M2 |-→| M3 |-→| M4 |-→| M5 |-→| M6 |-→| M7 |
SYNC --→| |-→| |-→| |-→| |-→| |-→| |-→| |-→| |
TV[1:7]→| |-→| |-→| |-→| |-→| |-→| |-→| |-→| |
|____| |____| |____| |____| |____| |____| |____| |____|
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
SAILON-69 Video Switch LOGICAL ORGANIZATION 6
GEOGRAPHY
The card cage has two rows of sockets, which we shall call "A", for
"above" and "B", for "below". Each socket has pins numbered from
1 to 70. The switch cards, being double height, connect to both rows
so we distinguish their two sets of pin numbers with an "A" or "B"
prefix.
The other cards, being single height, carry an A or B prefix on their
position number to indicate the row in which they reside. The
locations of the cards are as follows, for no good reason.
location, card name location, card name
1 S36 B11 M5
2 S34 A12 M0
3 S32 B12 M4
4 S30 A14 CON
5 S26 B14 TV
6 S24 16 S16
7 S22 17 S14
8 S20 18 S12
A9 M3 19 S10
B9 M7 20 S06
A10 M2 21 S04
B10 M6 22 S02
A11 M1 23 S00
The card names are also stuck onto the backpanel.
Components on cards are divided into lettered rows and numbered
columns. Components nearest the top of the card are in row "A", the
next row down is "B", etc. Those nearest the backpanel are in column
"1" and successive columns are numbered sequentially.
As an aid to locating logical groups of components on switch cards,
each group is labeled with its section address (0 to 17). Similar
section numbering appears on the mixer card artwork, but not on the
cards themselves.
In general, wire colors are keyed to the signal number modulo 4, as
follows: # mod 4 wire color
0 green
1 orange
2 blue
SAILON-69 Video Switch WIRE LIST 7
APPENDIX A. WIRE LIST
All backpanel wires and corresponding signal names are listed below.
Twisted pairs are indicated by a notation of the form n*2 in the "#
of wires" column, below. There are 1063 single wires and 120 twisted
pairs.
Notation of the form "T[11:13]" refers to T11, T12, and T13.
Certain lower case letters stand for specific groups of alternative
integers, as follows:
i = [0:3] = 0, 1, 2, or 3
j = 0, 2, 4, or 6
k = [0:7]
All signal numbers are given in octal; pin numbers are decimal.
Signal names preceded by "¬" are low true.
The following socket names are used.
CON - Control card
TV - TV amplifier card
Sij - Switch card connecting Data Disc channels i0 through i7 to
monitor channels j0 through j0+17.
Mk - Mixer card for monitor channels k0 through k7.
D - BNC sockets for Data Disc channels 00 through 37.
SYNC - BNC socket for Data Disc sync signal.
T - BNC sockets for television sources.
M - BNC sockets for monitor channels.
The card sockets are labeled on the backpanel. The BNC sockets are
located on the plugboard below the card cage and are labeled there.
SIGNAL FROM TO # OF WIRES TOTAL WIRES
SOCKET PIN SOCKET PIN
-------------------------------------------------------------------
+5 volts (digital), 0.15% regulation 134
+5D power plane CON 23,24,58,59 4
Sij T[11:13] 48
T[46:48] 48
Mk 3,6,38,41 32
TV 27,62
+5 volts (analog), 0.01% regulation 16
+5A supply Mk 8,43 16
+15 volts 2
+15 supply TV 17,52 2
-22 volts, 0.01% regulation 18
-22 supply TV 25,60 2
SAILON-69 Video Switch WIRE LIST 8
SIGNAL FROM TO # OF WIRES TOTAL WIRES
SOCKET PIN SOCKET PIN
-------------------------------------------------------------------
Address bits, latched from rightmost 4 bits of CONO. 88
A0 CON 67 Sij B42 16
A1 CON 68 Sij B40 16
Mk 36 8
A2 CON 69 Sij B38 16
Mk 2 8
A3 CON 70 Sij B36 16
Mk 1 8
Following are the same as the 36 bits of the 160
IO bus whenever a CONO or DATAO is being executed for
this device.
¬B0 CON 1 S0j A54 4
¬B1 2 A52 4
¬B2 3 A58 4
¬B3 4 A60 4
¬B4 5 B46 4
¬B5 6 B50 4
¬B6 7 B44 4
¬B7 8 B48 4
¬B10 CON 9 S1j A54 4
¬B11 10 A52 4
¬B12 11 A58 4
¬B13 12 A60 4
¬B14 13 B46 4
¬B15 14 B50 4
¬B16 15 B44 4
¬B17 16 B48 4
¬B20 CON 17 S2j A54 4
¬B21 18 A52 4
¬B22 36 A58 4
¬B23 37 A60 4
¬B24 38 B46 4
¬B25 39 B50 4
¬B26 40 B44 4
¬B27 41 B48 4
¬B30 CON 42 S3j A54 4
¬B31 43 A52 4
¬B32 44 A58 4
¬B33 45 A60 4
¬B34 46 B46 4
¬B35 47 B50 4
¬B36 48 B44 4
¬B37 49 B48 4
¬B40 CON 50 Mk 5 8
¬B41 51 40 8
¬B42 52 4 8
SAILON-69 Video Switch WIRE LIST 9
SIGNAL FROM TO # OF WIRES TOTAL WIRES
SOCKET PIN SOCKET PIN
-------------------------------------------------------------------
Data Disc sync signal 1*2
DD SYNC SYNC CON 61 1*2
Data Disc channels (32 TTL levels), each 32*2+96
terminated with 150 ohms to ground (on BNC panel) and
150 ohms to +5D (on back panel).
¬Di0 D i0 Sij B54 4*2+12
¬Di1 i1 B52 4*2+12
¬Di2 i2 A66 4*2+12
¬Di3 i3 A68 4*2+12
¬Di4 i4 A64 4*2+12
¬Di5 i5 A62 4*2+12
¬Di6 i6 B56 4*2+12
¬Di7 i7 B58 4*2+12
Ground. 202
G ground plane CON 19:21,54:56 6
TV 2,4,6,8+j,20,21 9
37,39,41,43+j 7
55,56 2
Sij A[8:10],B22 64
A[43:45],B57 64
Mk 10,12,14 24
45,47,49 24
Monitor (output) signals 64*2
Mk0 Mk 69 M k0 8*2
Mk1 34 k1 8*2
Mk2 33 k2 8*2
Mk3 35 k3 8*2
Mk4 68 k4 8*2
Mk5 70 k5 8*2
Mk6 32 k6 8*2
Mk7 67 k7 8*2
Select signals for mixer cards; decoded from 8
latches set by CONO bits 30, 31, & 32 (decimal).
¬SMk CON 28+k Mk 37 8
Select signals for switch boards,decoded from 16
latches set by CONO bits 30 & 31 (decimal).
¬SSj CON 63+j/2 Sij A70 16
Buffered version of DD SYNC 9
SYNC CON 26 Mk 42 8
SAILON-69 Video Switch WIRE LIST 10
SIGNAL FROM TO # OF WIRES TOTAL WIRES
SOCKET PIN SOCKET PIN
-------------------------------------------------------------------
Television signals from cameras,etc. 7*2
T1 T 1 TV 36 1*2
T2 2 38 1*2
T3 3 40 1*2
T4 4 42 1*2
T5 5 44 1*2
T6 6 46 1*2
T7 7 48 1*2
Amplified and offset versions of T[1:7]. 7*2+49
TV1 TV 1 Mk 44 1*2+7
TV2 3 46 1*2+7
TV3 5 48 1*2+7
TV4 7 13 1*2+7
TV5 9 7 1*2+7
TV6 11 11 1*2+7
TV7 13 9 1*2+7
Crosstie signals from switch cards to mixer cards. 256
¬Xij0 Sij B70 Mj 54+i 16
¬Xij1 B35 19+i 16
¬Xij2 B33 23+i 16
¬Xij3 B68 15+i 16
¬Xij4 B66 58+i 16
¬Xij5 A40 50+i 16
¬Xij6 A42 62+i 16
¬Xij7 A3 27+i 16
¬Xi[j+1]0 Sij B70 M[j+1] 54+i 16
¬Xi[j+1]1 B35 19+i 16
¬Xi[j+1]2 B33 23+i 16
¬Xi[j+1]3 B68 15+i 16
¬Xi[j+1]4 B66 58+i 16
¬Xi[j+1]5 A40 50+i 16
¬Xi[j+1]6 A42 62+i 16
¬Xi[j+1]7 A3 27+i 16
Following is high when CONO or DATAO is being 0
executed to this device. Brought out for debugging.
SAILON-69 Video Switch Card Signals 11
APPENDIX B. Card Signals
The signal on each pin of each card type is given below. For
descriptions of signals and notational conventions, see Appendix A.
CONTROL CARD TV CARD
Pin Signal Pin Signal Pin Signal Pin Signal
--- ------ --- ------ --- ------ --- ------
1 ¬B0 36 ¬B22 1 TV1 36 T1
2 ¬B1 37 ¬B23 2 G 37 G
3 ¬B2 38 ¬B24 3 TV2 38 T2
4 ¬B3 39 ¬B25 4 G 39 G
5 ¬B4 40 ¬B26 5 TV3 40 T3
6 ¬B5 41 ¬B27 6 G 41 G
7 ¬B6 42 ¬B30 7 TV4 42 T4
8 ¬B7 43 ¬B31 8 G 43 G
9 ¬B10 44 ¬B32 9 TV5 44 T5
10 ¬B11 45 ¬B33 10 G 45 G
11 ¬B12 46 ¬B34 11 TV6 46 T6
12 ¬B13 47 ¬B35 12 G 47 G
13 ¬B14 48 ¬B36 13 TV7 48 T7
14 ¬B15 49 ¬B37 14 G 49 G
15 ¬B16 50 ¬B40 15 50
16 ¬B17 51 ¬B41 16 51
17 ¬B20 52 ¬B42 17 +15 52 +15
18 ¬B21 53 ¬B43 18 53
19 G 54 G 19 54
20 G 55 G 20 G 55 G
21 G 56 G 21 G 56 G
22 ZAP 57 22 57
23 +5D 58 +5D 23 SYNC 58
24 +5D 59 +5D 24 59
25 60 25 -22 60 -22
26 SYNC 61 DD SYNC 26 61
27 62 27 +5D 62 +5D
28 ¬SM0 63 ¬SS0 28 63
29 ¬SM1 64 ¬SS2 29 64
30 ¬SM2 65 ¬SS4 30 65
31 ¬SM3 66 ¬SS6 31 66
32 ¬SM4 67 A0 32 67
33 ¬SM5 68 A1 33 68
34 ¬SM6 69 A2 34 69
SAILON-69 Video Switch Card Signals 12
SWITCH CARD Sij
Note that the variables i and j below are bound to the card index Sij.
Pin Signal Pin Signal Pin Signal Pin Signal
--- ------ --- ------ --- ------ --- ------
A1 ¬Xi[j+1]0 A36 ¬Xi[j+1]2 B1 G B36 A3
A2 G A37 G B2 G B37 G
A3 ¬Xij7 A38 ¬Xi[j+1]1 B3 G B38 A2
A4 G A39 G B4 G B39 G
A5 ¬Xi[j+1]4 A40 ¬Xij5 B5 G B40 A1
A6 G A41 G B6 G B41 G
A7 ¬Xi[j+1]3 A42 ¬Xij6 B7 G B42 A0
A8 G A43 G B8 G B43 G
A9 G A44 G B9 G B44 ¬Bi6
A10 G A45 G B10 G B45 G
A11 +5D A46 +5D B11 G B46 ¬Bi4
A12 +5D A47 +5D B12 G B47 G
A13 +5D A48 +5D B13 G B48 ¬Bi7
A14 G A49 G B14 G B49 G
A15 G A50 G B15 G B50 ¬Bi5
A16 G A51 G B16 G B51 G
A17 G A52 ¬Bi1 B17 G B52 ¬Di1
A18 G A53 G B18 G B53 G
A19 G A54 ¬Bi0 B19 G B54 ¬Di0
A20 G A55 G B20 G B55 G
A21 G A56 G B21 G B56 ¬Di6
A22 G A57 G B22 G B57 G
A23 G A58 ¬Bi2 B23 +5D B58 ¬Di7
A24 G A59 G B24 +5D B59 +5D
A25 G A60 ¬Bi3 B25 +5D B60 +5D
A26 G A61 G B26 G B61 G
A27 G A62 ¬Di5 B27 G B62 G
A28 G A63 G B28 G B63 G
A29 G A64 ¬Di4 B29 ¬Xi[j+1]6 B64 ¬Xi[j+1]7
A30 G A65 G B30 G B65 G
A31 G A66 ¬Di2 B31 ¬Xi[j+1]5 B66 ¬Xij4
A32 G A67 G B32 G B67 G
A33 G A68 ¬Di3 B33 ¬Xij2 B68 ¬Xij3
A34 G A69 G B34 G B69 G
SAILON-69 Video Switch Card Signals 13
MIXER CARD Mk
Note that the variable k below is bound to the card index Mk.
Pin Signal Pin Signal
--- ------ --- ------
1 A3 36 A1
2 A2 37 ¬SMk
3 +5D 38 +5D
4 ¬B42 39 ¬B43
5 ¬B40 40 ¬B41
6 +5D 41 +5D
7 TV5 42 SYNC
8 +5A 43 +5A
9 TV7 44 TV1
10 G 45 G
11 TV6 46 TV2
12 G 47 G
13 TV4 48 TV3
14 G 49 G
15 ¬X0k3 50 ¬X0k5
16 ¬X1k3 51 ¬X1k5
17 ¬X2k3 52 ¬X2k5
18 ¬X3k3 53 ¬X3k5
19 ¬X0k1 54 ¬X0k0
20 ¬X1k1 55 ¬X1k0
21 ¬X2k1 56 ¬X2k0
22 ¬X3k1 57 ¬X3k0
23 ¬X0k2 58 ¬X0k4
24 ¬X1k2 59 ¬X1k4
25 ¬X2k2 60 ¬X2k4
26 ¬X3k2 61 ¬X3k4
27 ¬X0k7 62 ¬X0k6
28 ¬X1k7 63 ¬X1k6
29 ¬X2k7 64 ¬X2k6
30 ¬X3k7 65 ¬X3k6
31 -22 66 -22
32 Mk6 67 Mk7
33 Mk2 68 Mk4
34 Mk1 69 Mk0