18
3.
PANELS AND I/O TERMINALS
MULTIFUNCTION GENERATOR
Table 3-2. Multi-I/O Connector Function Allocation
Note: +5 V is output for testing purposes during production to pin No. 9. This pin is not designed for
use by users. Leave this pin unconnected, as its use may cause the operation of the equipment to
become unstable.
■
I/O characteristics
The connection cable is an option. Contact NF Corporation or an NF distributor for details.
Pin No.
I/O
Sweep Oscillation
Mode
Sequence Oscillation
Mode
Option Cable Color and
Marking
1
Output
Not used
Step sync code D0 (LSB)
Light brown
Black
■
2
Output
Not used
Step sync code D1
Light brown
Red
■
3
Output
Not used
Step sync code D2
Yellow
Black
■
4
Output
Not used
Step sync code D3 (MSB)
Yellow
Red
■
5
Output
Not used
Not used
Bright green
Black
■
6
GND
–
–
Bright green
Red
■
7
GND
–
–
Gray
Black
■
8
GND
–
–
Gray
Red
■
9
Reserved
Leave unconnected
Leave unconnected
White
Black
■
10
GND
–
–
White
Red
■
11
Input
Not used
Sequence event branch
Light brown
Black
■■
12
Input
Sweep hold/resume
Sequence hold/resume
Light brown
Red
■■
13
Input
Sweep stop
Sequence stop
Yellow
Black
■■
14
Input
Sweep start
Sequence start or state
branch
Yellow
Red
■■
15
Input
Not used
Not used
Bright green
Black
■■
Shell
–
–
–
Bright green
Red
■■
Input voltage
TTL level (low: 0.8 V or lower; high: 2.6 V or higher)
Maximum allowed input
−
0.5 V to +5.5 V
Input impedance
10 k
Ω
, pull up to +5 V
Output voltage
TTL level (low: 0.4 V or lower; high: 2.7 V or higher)
Signal GND
Same potential as housing
Connector
Mini D-sub 15-pin
