Tally Port

The switcher supports 34 fixed tallies on a female DB37 connector.

Table 1. Tally Rating
Specification	Value
Input Voltage	24VAC(rms)/40VDC
Maximum Current	120mA
Impedance	<15 ohm

Note: The tally pin must be connected to the proper common to complete the circuit. For example, tally 6 on pin 7 must be connected to the common on pin 31.

Table 2. Tally Pinouts
Pin	Tally #
1	Common (pins 2-6, 20-25)
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	16
18	17
19	Common (pins 13-18, 32-37)
20	18
21	19
22	20
23	21
24	22
25	23
26	24
27	25
28	26
29	27
30	28
31	Common (pins 7-12, 26-30)
32	29
33	30
34	31
35	32
36	33
37	34