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16
www.BlueBoxOptics.com V2.4
niji
100k Pull Up Enabled vs 100k Pull Down Enabled
Enabling the 100k Pull Up/Down feature allows multiple channels to be set to emit
synchronously and independently of the state of a switched TTL channel.
In “Active High” mode and with the “100k Pull Up Resistor” enabled, all channels will
be in an “on” state, and only the TTL triggered channels will be controlled by the TTL
interface. In this mode, only those channels which are tied to ground are in the “off”
state.
With the 100k Pull Down resistor activated, all channels will be in an “on” state, and
only the TTL triggered channels will be controlled by the TTL interface. In this mode,
only those channels which are tied to 5V are in the “off” state.
Active
High
Active
Low
100k
Pull Up
100k Pull
Down
5V GND Function
• - • - ON OFF TTL and static channel control
1
• - - • ON OFF TTL Active Only
- • • -
OFF ON TTL Active Only
- • - • OFF ON
TTL and static channel control
2
Table 2: TTL Configuration
Pin Number Description Channel Electrical
1 Red 6
Vmax = 5.0V 2 Green/Amber 5
3 Cyan 4
4, 5, 9, 14 Not Used - -
6,7,8,10 Ground - -
11 Royal Blue 2
Vmax = 5.0V
12 Blue 3
13 Ultra Violet 1
15 Far Red 7
Table 3: 15 Way TTL Connector Pinout
Figure 7: Rear view of TTL Connector
1
In this mode, any unwanted channels must be tied to GND to turn the channel OFF.
2
In this mode, any unwanted channels must be tied to 5V to turn the channel OFF.