Digitrax Decoder Index

Decimal and Hexadecimal Numbers

Over the years, different Digitrax throttles have used a combination of decimal, modified hexadecimal and hexadecimal numbers for entering CV#s and CV values. The following information is provided as a programming reference to show you how these different schemes work so that you will be able to use your throttle to program decoders.

UT1 & UT2 Utility Throttles use decimal numbers exclusively for CV#s and CV values. Because these throttles use 2 selector switches that can access the numbers 0-9, you are limited to programming only CV#s and values from 00 to 99.

DT100 Throttles use a modified hex numbering system for accessing CV#s and the CV value for the decoder address (CV01) as shown on the following table. The DT100 is limited to programming CV#s 01-128. (See your DS54 manual for special method of programming CVs related to stationary decoders that are above this range.) A 2 digit decoder address can be any decimal number from 01-128. When you use your DT100 throttle to access 2 digit addresses or CV#s, decimal numbers 00 to 99 appear in the display as 01-99 and decimal numbers 100-128 appear as listed below. For example, if want to select address 120 to run on your DT100, dial up C0.

DT100 Throttle Display-CV# & 2 Digit Address

01-99 appears as 01-99 Addresses above 99 listed below:

DEC	HEX	DEC	HEX	DEC	HEX
100	A0	110	B0	120	C0
101	A1	111	B1	121	C1
102	A2	112	B2	122	C2
103	A3	113	B3	123	C3
104	A4	114	B4	124	C4
105	A5	115	B5	125	C5
106	A6	116	B6	126	C6
107	A7	117	B7	127	C7
108	A8	118	B8
109	A9	119	B9

DT100 Throttles use hexadecimal notation for all other CV Values entered. The table below is a conversion.

DT300 & DT400 Throttles use decimal numbers for entering CV#s and can use either decimal or hex for entering CV Values. You can change from decimal to hex and vice versa by clicking the R encoder knob when you are in programming mode. When a hex value is displayed, you will see an “x” in front of the number. When a decimal number is displayed you will just see the three numbers.

Decimal to Hexadecimal Conversion Chart

DEC	HEX	DEC	HEX	DEC	HEX	DEC	HEX	DEC	HEX	DEC	HEX	DEC	HEX
000	x00	039	x27	078	x4E	117	x75	156	x9c	195	xc3	234	xEA
001	x01	040	x28	079	x4F	118	x76	157	x9d	196	xc4	235	xEb
002	x02	041	x29	080	x50	119	x77	158	x9E	197	xc5	236	xEc
003	x03	042	x2A	081	x51	120	x78	159	x9F	198	xc6	237	xEd
004	x04	043	x2b	082	x52	121	x79	160	xA0	199	xc7	238	xEE
005	x05	044	x2c	083	x53	122	x7A	161	xA1	200	xc8	239	xEF
006	x06	045	x2d	084	x54	123	x7b	162	xA2	201	xc9	240	xF0
007	x07	046	x2E	085	x55	124	x7c	163	xA3	202	xcA	241	xF1
008	x08	047	x2F	086	x56	125	x7d	164	xA4	203	xcb	242	xF2
009	x09	048	x30	087	x57	126	x7E	165	xA5	204	xcc	243	xF3
010	x0A	049	x31	088	x58	127	x7F	166	xA6	205	xcd	244	xF4
011	x0b	050	x32	089	x59	128	x80	167	xA7	206	xcE	245	xF5
012	x0c	051	x33	090	x5A	129	x81	168	xA8	207	xcF	246	xF6
013	x0d	052	x34	091	x5b	130	x82	169	xA9	208	xd0	247	xF7
014	x0E	053	x35	092	x5c	131	x83	170	xAA	209	xd1	248	xF8
015	x0F	054	x36	093	x5d	132	x84	171	xAb	210	xd2	249	xF9
016	x10	055	x37	094	x5E	133	x85	172	xAc	211	xd3	250	xFA
017	x11	056