User manual

ALM26 Series User Manual P/N 821644 Rev-A
21
© 2006 Wohler Technologies Inc. ALL rights reserved
Level Meter Alternative Scales
The standard scales used on the ALM26 Series level meters are the Extended VU scale for analog models and AES scale for digital
models (see diagram below). However, if alternative scale characteristics are selected for the level meters using the Option Select
Switch (Item F, page 16), it is recommended that a label with the appropriate scale be applied to the front panel LED bargraph level
meters. Alternative scales include the VU, BBC, NORDIC, and DIN scales (see diagram below for scale comparison). Contact
Wohler Technologies for information about alternative scale labels for the ALM26 Series units. Note that the color boundaries for all
of the scales (standard and non-standard) can be modified. Contact the factory for instructions.
NORDIC
Scale
DIN
Scale
VU
Scale
BBC
Scale
AES
(Digital)
Scale
(Standard)
Alternate AES
Scale
(Custom)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
0
-6
-12
-18
-24
-30
-36
-42
-48
17
24
26
25
21
23
22
20
19
18
2
13
16
15
14
12
11
10
6
9
8
7
5
4
3
1
0
17
24
25
26
21
22
23
18
19
20
+3
2
13
14
15
16
10
12
11
6
7
8
9
3
4
5
1
+2
+1
0
-1
-2
-3
-5
-7
-10
-20
17
24
26
25
21
23
22
20
19
18
2
13
16
15
14
11
12
10
6
9
8
7
5
4
3
1
7
6
5
4
3
2
1
17
24
25
26
21
22
23
18
19
20
+12
2
13
14
15
16
10
12
11
6
7
8
9
3
4
5
1
+9
+6
+3
T
-3
-6
-9
-18
-24
-30
-36
-42
17
24
25
26
21
22
23
18
19
20
2
+5
13
14
15
16
10
12
11
6
7
8
9
3
4
5
1
0
-5
-10
-20
-30
-40
-50
17
-50
-40
-30
-24
Extended VU
(Analog)
Scale
(Standard)
24
25
26
21
22
23
18
19
20
-18
-12
-6
0
+6
+12
2
13
14
15
16
10
11
12
6
7
8
9
3
4
5
1
-3
-6
-9
-12
-15
-18
-21
-24
-27
-30
-40
-50