User manual
196
For the BioScience Tools PC-16 a Gain of 0.525, or 0.525 volts per channel, or 8.4 volts for Channel 16
seems like it should work OK. However, we have not tested the PC-16 yet. For some reason, the PC-16
actually has a 0.5 volt offset beginning with Channel 1, so using the Gain of 0.525 to try and give an
acceptable linear voltage fit without adding an 0.5 volt offset may not work well, and we may have to
program in an offset later.
For the Warner VC-8 controller, if you are using AnalogOut 1 to run one Warner controller for turning on
Channels 1 to 8, use a Gain of 1.0, or 1 volt per channel, or 8 volts out to turn on Channel 8. However, if
you are using AnalogOut 1 and AnalogOut 2 to run two Warner controllers for turning on a total of 16
channels, use a Gain of 0.5, or 4.0 volts out to turn on Channel 8, and compensate by doubling the AO1
and AO2 voltages by using external amplifiers such as inexpensive op-amps. This is because a Gain of
1.0 for 16 channels would be greater than the 10 volts output capability of AO1, so if you decrease the
Gain to 0.5, with 16 channels WinLTP thinks its outputting 8 volts for 16 channels but with the external
amplifier doubling, the output is 8 volts for 8 channels on one controller and 8 channels on 2 controllers.
BiosScience
WinLTP
Tools
WinLTP
ALA
WinLTP
AutoMate
WinLTP
Warner
Voltage
PC-16
Voltage
VC
3
8
Voltage
ValveLink
Voltage
VC-8
AO1
AO1
+ AO2
WinLTP
Gain
0.525
0.5
0.575
1.0
0.5
Chs Off
0.0 – 0.5
0.00
0.0
0.0
0.0
0.00
0
0
0.0
Ch 1
0.5 – 1.0
0.53
0.5
0.5
0.5
0.50
1
1
0.5
Ch 2
1.0 – 1.5
1.05
1.0
1.0
1.1
1.15
2
2
1.0
Ch 3
1.5 – 2.0
1.58
1.5
1.5
1.6
1.73
3
3
1.5
Ch 4
2.0 – 2.5
2.10
2.0
2.0
2.1
2.30
4
4
2.0
Ch 5
2.5 – 3.0
2.63
2.5
2.5
2.7
2.88
5
5
2.5
Ch 6
3.0 – 3.5
3.15
3.0
3.0
3.3
3.45
6
6
3.0
Ch 7
3.5 – 4.0
3.68
3.5
3.5
3.9
4.03
7
7
3.5
Ch 8
4.0 – 4.5
4.20
4.0
4.0
4.6
4.60
8
8
4.0
Ch 9
4.5 – 5.0
4.73
Ch 10
5.0 – 5.5
5.25
Ch 11
5.5 – 6.0
5.78
Ch 12
6.0 – 6.5
6.30
Ch 13
6.5 – 7.0
6.83
Ch 14
7.0 – 7.5
7.35
Ch 15
7.5 – 8.0
7.88
Ch 16
8.0 – 8.5
8.40
Table 10.3.1.2.1. The voltages for turning on Channels 1 to 16 for the BioScience Tools’ PC-16
controller, for turning on Channels 1 to 8 for the ALA Scientific’s VC
3
8 controller, and for turning on 1 to 8
channels for the Automate Scientific’s ValveLink 8.2. If you are using AnalogOut 1 to run one Warner VC-
8 controller for turning on Channels 1 to 8, use a Gain of 1.0. If you are using AnalogOut 1 and
AnalogOut 2 to run two Warner VC-8 controllers for turning on a total of 16 channels, use a Gain of 0.5,
and compensate by increasing the AO1 and AO2 output by 2.
No latching is required for WinLTP to maintain a channel in the On state.