![background image](http://html1.mh-extra.com/html/omega/dp461-s/dp461-s_user-manual_4062390144.webp)
13
BCD Option
13-1
13.1 FEATURES OVERVIEW
1.
6 BCD digits (24 lines plus 1 polarity, 3 decimal-point location code, 1
overflow, 1 timing, 1 control, 4 card address, and 3 isolation power
lines).
2.
Furnished 40-line mass-terminated connector: pin compatibility with 50-
pin BCD cable assignments.
3.
Can be jumpered for internal, non-isolated drive or external power with
isolation (354 V per IEC spacing, 500 V test).
4.
Upper 3 BCD digits can be multiplexed onto lower 3 BCD lines for 3
digits at a time readout.
5.
All outputs tri-state, TTL/CMOS compatible, 10 LSTTL loads.
6.
Data always valid (stored, buffered).
7.
Selectable 4-line card address (with internal pull-ups) or single-line
activation.
Figure 13-1 shows the rear of the meter case with the 40-line edge
connector highlighted and the upper and lower pin assignments.
Figure 13-1. BCD 40-Pin Cable Connector (P8)
1
2
3
P1
N
P2
1
2
3
P5
1
2
3
P3
1
2
3
P9
P8
U1
L1
U20
L20
J4
1
20
BCD 400K
BCD 100K
ISO RTN
BCD 40K
BCD 10K
BCD 4K
BCD 1K
D.P. 2
BCD 400
BCD 100
BCD 40
BCD 10
BCD 4
BCD 1
ISO RTN
DATA READY
ISO V+
SPARE
ADDRESS B4
ADDRESS B1
BCD 800K
BCD 200K
SPARE
BCD 80K
BCD 20K
BCD 8K
BCD 2K
D.P. 4
BCD 800
BCD 200
BCD 80
BCD 20
BCD 8
BCD 2
D. P. 1
POLARITY
HOLD
OVERFLOW
ADDRESS B8
ADDRESS B2
L1
L2
L3
L4
L5
L6
L7
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
U1
U2
U3
U4
U5
U6
U7
U8
U9
U10
U11
U12
U13
U14
U15
U16
U17
U18
U19
U20
P8
L
Содержание DP461-S
Страница 96: ......