Dagan IX2-700, Руководство по эксплуатации

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IX2-700 Dual Intracellular Preamplifier
10
DIFFERENTIAL RECORDING
The IX2-700 can be used for differential recording using Channel 1 and
Channel 2. The 10 (V
1
- V
2
) output BNC on the front panel is the Channel 1
voltage less the Channel 2 voltage. You must be certain both channels are properly
zeroed with their DC offsets as any offset will also be subtracted from the other
channel. There is an internal trimpot for common mode rejection ratio adjustment
that has been factory set. This adjustment assures that the output is zero when the
outputs from channels 1 and 2 are equal. Should you need to adjust the trimpot,
contact the factory for explicit instructions.
The Cx control is for cross capacitance nulling to adjust for variations in
dynamic response time between Channel 1 and Channel 2.
Since the selection of available probes includes one with an input impedance
greater than 10
14
ohms the differential mode may be used directly with ion
selective electrodes (i.e. channel 1 connected to the ion sensitive electrode). The
output resistance is 600 ohms with a range of
+/- 13 volts.
UNUSED CHANNEL
If you are only using one of the two channels, either unplug the unused 15
pin rear panel connector or connect the unused headstage input connector through
a resistance or directly to ground (ROD).