Alto 1822 wire-wrap interface internal cable e18k80(0,5888)(1,8960)(2,11520)\b45B
Last Modified by L. Stewart September 4, 1978  2:34 PMe18k80
One end is an Alto 1 paddle board and the other is a DCC-37S.e12k80
All signal pairs such as 1,20 3,22 ...... 18,37 should be twisted pair type wire.e12k80
DCC-37S	Alto card	Signal	Wire
connector	connector	name	color
1	115	TYIB'	Yellow
20	116	TYIB	White
2	114	+2.4	Orange
21	53	GND	White
3	112	RFNHB'	Green
22	113	RFNHB	White
4	111	+2.4	Blue
23	50	GND	White
5	109	LIB'	Orange
24	110	LIB	Black
6	108	+2.4	Red
25	47	GND	White
7	106	IData'	Red
26	107	IData	Black
8	105	+2.4	Violet
27	44	GND	Black
9	81	HData'	Blue
28	82	HData	Black
10	20	GND	(Green) 
29	20	GND	(Green)
11	79	LHB'	Brown
30	80	LHB	Yellow
12	77	RFNIB'	Yellow 
31	78	RFNIB	Black
13	17	GND	(Black)
32	17	GND	(Black)
14	75	TYHB'	Violet 
33	76	TYHB	White
15	92	IRT	Brown
34	91	IMR	Green
16	13	GND	(Brown) 
35	13	GND	(Brown)
17		blank
36		blank
18	72	HRT	Brown
37	71	HMR	Red
19		blank
e18k80\30u31U55u16U54u16U50u16U54u16U89u17U95u17U105u14U
Alto internal cable 1822 interface (PC version)e18k80(0,8128)(1,13184)(2,65535)\b
One end is a 40 conductor PC edge connector and the other is a DCC-37S.  The wire is 40 conductor ribbon cablee18k80

DCC-37S	Alto card	Signal
connector	connector	name
1	1	TYIB'
20	2	TYIB
2	3	+2.4
21	4	GND
3	5	RFNHB'
22	6	RFNHB
4	7	+2.4
23	8	GND
5	9	LIB'
24	10	LIB
6	11	+2.4
25	12	GND
7	13	IData'
26	14	IData
8	15	+2.4
27	16	GND
9	17	HData'
28	18	HData
10	19	GND
29	20	GND
11	21	LHB'
30	22	LHB
12	23	RFNIB'
31	24	RFNIB
13	25	GND
32	26	GND
14	27	TYHB'
33	28	TYHB
15	29	IRT
34	30	IMR
16	31	GND
35	32	GND
17	33	blank
36	34	blank
18	35	HRT
37	36	HMR
19	37	blank

	38	blank	Not wired at DCC-37
	39	blank	Not wired at DCC-37
	40	blank	Not wired at DCC-37
e18k80(0,5920)(1,9024)(2,11872)\26u9U1u9U1u4U30u9U31u9U29u10U34u10U55u10U57u11U74u10U
e18k80(0,5888)(1,8960)(2,11520)
Alto 1822 Interface External Extension Cable

One end is a DCC-37P connector and the other is a DCC-37S.  The wire is Belden 8775 - 11 shielded pairs or equivilent.e18k80(0,8128)(1,13184)(2,65535)\b45B

DCC-37S	Wire	Signal
connector	color	name
1	Red	TYIB'
20	Blue	TYIB
2		+2.4
21	Shield	GND
3	Red	RFNHB'
22	Green	RFNHB
4		+2.4
23	Shield	GND
5	White	LIB'
24	Black	LIB
6		+2.4
25	Shield	GND
7	Red	IData'
26	White	IData
8		+2.4
27	Shield	GND
9	Orange	HData'
28	Black	HData
10	Shield	GND
29	Shield	GND
11	Red	LHB'
30	Black	LHB
12	Green	RFNIB'
31	Black	RFNIB
13	Shield	GND
32	Shield	GND
14	Brown	TYHB'
33	Black	TYHB
15	Red	IRT
34	Yellow	IMR
16	Shield	GND
35	Shield	GND
17		blank
36		blank
18	Blue	HRT
37	Black	HMR
19		blank
e18k80(0,5920)(1,9024)(2,11872)\21u21U33u14U36u14U34u14U36u14U71u13U74u14U85u13U
Alto 1822 PRU cablee18k80(0,8128)(1,13184)(2,65535)\b
One end is a DCC-37P connector and the other is a MIL 48-16R18-31P.  The wire is Belden 8775 - 11 shielded pairs or equivilent.e30jk80
Notes:  The Parc PRU cable is wired with all the color pairs reversed and the ASD PRU cable uses a different kind of wire... These colors should be taken only as a recommendation.e18jk80

DCC-37S	PRU	Wire	Signal
connector	connector	color	name
1	6	Red	TYIB'
20	5	Blue	TYIB
2		+2.4
21	31	Shield	GND
3	8	Red	RFNHB'
22	7	Green	RFNHB
4		+2.4
23	31	Shield	GND
5	2	White	LIB'
24	1	Black	LIB
6		+2.4
25	31	Shield	GND
7	4	Red	IData'
26	3	White	IData
8		+2.4
27	31	Shield	GND
9	24	Orange	HData'
28	23	Black	HData
10	31	Shield	GND
29	31	Shield	GND
11	22	Red	LHB'
30	21	Black	LHB
12	18	Green	RFNIB'
31	17	Black	RFNIB
13	31	Shield	GND
32	31	Shield	GND
14	20	Brown	TYHB'
33	19	Black	TYHB
15	14	Red	IRT
34	13	Yellow	IMR
16	31	Shield	GND
35	31	Shield	GND
17		blank
36		blank
18	12	Blue	HRT
37	11	Black	HMR
19		blank
e18k80(0,5920)(1,9024)(2,11872)\25u31U37u17U40u17U38u17U40u17U86u16U89u17U100u16U
Alto 1822 interface to IMP adapter Cablee18k80(0,8128)(1,13184)(2,65535)\b
One end is an DCC-25P and the other is a DCC-37P.e18k80\49b
All signal pairs such as 20,21 22,23 ...... 34,35 should be twisted pair type wire.e18k80(0,6688)(1,10720)
DCC-37P 	DCC-25P	Signal name
1 jump to 2		TYIB' - 2.4v
20	5	TYIB
21	18	GND
3 jump to 4		FRNHB' - 2.4v
22	7	RFNHB
23	20	GND
5 jump to 6		LIB' - 2.4v
24	1	LIB
25	14	GND
7 jump to 8		IData' - 2.4v
26	3	IData
27	16	GND
28	8	HData
10	21	GND
30	6	LHB
29	19	GND
31	2	RFNIB
13	15	GND
33	4	TYHB
32	17	GND
17	11	IRT
16	24	GND
36	12	IMR
16	25	GND
18	9	HRT
35	22	GND
37	10	HMR
35	23	GND
e18k80\u29U84u10U82u10U71u10U69u10U
e18k80(0,5984)(1,9216)(2,12832)
Alto - 1822 Interface Remote host test plug

This plug loops back the Alto-1822 interface using 'Distant-Host' signals

Plug type DCC-37P

On the DCC-37P connector Jumper pins
TYIB'	1	to	14	TYHB'
TYIB	20	to	33	TYHB
RFNHB'	3	to	12	RFNIB'
RFNHB	22	to	31	RFNIB
LIB'	5	to	11	LHB'
LIB	24	to	30	LHB
IData'	7	to	9	HData'
IData	26	to	28	HData
IRT	15	to	18	HRT
IMR	34	to	37	HMR
e18k80(0,5824)(1,7056)(2,8290)(3,9525)\b43B96u36U62u21U56u21U

Alto - 1822 Interface  Local host test plug

This plug loops back the Alto-1822 interface using 'Local-Host' signals

Plug type DCC-37P

On the DCC-37P connector Jumper pins
TYIB'	1	to	2	+2.4v
RFNHB'	3	to	4	+2.4v
LIB'	5	to	6	+2.4v
IData'	7	to	8	+2.4v
TYIB	20	to	33	TYHB
RFNHB	22	to	31	RFNIB
LIB	24	to	30	LHB
IData	26	to	28	HData
IRT	15	to	18	HRT
IMR	34	to	37	HMR
e18k80\1b44B93u36U58u20U57u21U
e18k80(0,5984)(1,9216)(2,12832)(3,65535)
Packet Radio EIA Extension Cable

This cable extends the PRU teletype interface.

The cable is 6 twisted pairs.
The PRU end has a DB-25P (This should mate with the connector on the cable attached to the radio.)
The other end has a DB-25S.
The cable is wired pin to pin.e18k80(0,5824)(1,7056)(2,8290)(3,9525)\b32B
Signal	Pin
Case Ground	 1
Signal Ground	 7
TX Data	 3
RX Data	 2
Data Terminal Ready	20
Request To Send	 4
Clear to Send	 5
Data Set Ready	 6
Carrier Detect	 8
e18k80(0,8640)(1,8608)\u10U44u10U
e18k80(0,5888)(1,8960)(2,11520)(3,65535)
1822 Cable Breakout Boxe18k80(0,8128)(1,13184)(2,65535)\b
This is a 122 pin edge-connector wire-wrap board plus several scotchflex to DB-37 adaptors.e18k80

DCC-37	Alto card	Card A	Card B	Signal
connector	connector	connector	connector	name
1	1	1	23	TYIB'
20	2	62	84	TYIB
2	3	2	24	+2.4
21	4	63	85	GND
3	5	3	25	RFNHB'
22	6	64	86	RFNHB
4	7	4	26	+2.4
23	8	65	87	GND
5	9	5	27	LIB'
24	10	66	88	LIB
6	11	6	28	+2.4
25	12	67	89	GND
7	13	7	29	IData'
26	14	68	90	IData
8	15	8	30	+2.4
27	16	69	91	GND
9	17	9	31	HData'
28	18	70	92	HData
10	19	10	32	GND
29	20	71	93	GND
11	21	11	33	LHB'
30	22	72	94	LHB
12	23	12	34	RFNIB'
31	24	73	95	RFNIB
13	25	13	35	GND
32	26	74	96	GND
14	27	14	36	TYHB'
33	28	75	97	TYHB
15	29	15	37	IRT
34	30	76	98	IMR
16	31	16	38	GND
35	32	77	99	GND
17	33	17	39	blank
36	34	78	100	blank
18	35	18	40	HRT
37	36	79	101	HMR
19	37	19	41	blank

	38	80	102	blank
	39	20	42	blank
	40	81	103	blank
e18k80(0,5920)(1,9024)(2,11872)(3,14464)\39u9U1u9U1u9U1u9U1u4U46u15U47u15U45u16U50u16U84u16U87u17U117u17U