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1 Product description Parameters 产品概要 Technical
Specs
OC-752C 卵母细胞双电极电压钳放大器是双电极电压钳记录的放大器，放大器常跟Heka 的LIH8+8 AD/DA
转换器和PatchMaster 记录分析软件配套使用。
Keyword: Warner OC-725C 卵母细胞膜片钳 膜片钳 膜片钳放大器 We could not find any
corresponding parameters, please add them to the properties table
OC-752C 卵母细胞双电极电压钳放大器是双电极电压钳记录的放大器，放大器常跟Heka 的LIH8+8 AD/DA
转换器和PatchMaster 记录分析软件配套使用。
详细参数
* λ 具有两种电压钳制速度模式：慢模式（Slow mode）用于筛选卵母细胞或应用于不需要快速 反应的情况。快模式（Fast
mode）用于对快速的全细胞电流进行精确钳制，反应时间（10-90% 上升时间）为350μs/100 mV 步阶命令。
* λ 具有浴电位测量及补偿功能。
* λ 具有交流钳制增益与直流钳制增益，以保证快速、无饱和钳制性能。交流钳制增益达2,000，直流增益1x106。
* λ 4.4 极Bessel 滤波。
* λ 具有电极检测功能。
英文：
(OC-725D) Oocyte Voltage Clamp
Designed for Two-electrode whole-cell voltage clamping of Xenopus
oocytes
* ? High compliance voltage (±180 V)
* ? Unique bath clamp circuitry
* ? Ideal for clamping large cells and cell structures
e.g. squid axons
* ? Extended current measuring range
* ? Decreased noise level and 4-pole Bessel filter
* ? Voltage and current electrode holders must be purchased
separately
Test Condition #1
Model cell used to obtain specifications.
Model membrane: 1 MΩ in parallel with 550 nF.
Current and voltage electrodes: both 1 MΩ impedance.
Test Condition #2
Noise measurements made with an 8-pole Bessel filter.
Voltage Recording Channel (Vm)
V Probe Input Impedance
0.5 x 1012Ω, 1 pF
Output Resistance
100 Ω
DC Offset
± 200 mV at input. Variations from zero with 10 turn control (20
mV/turn).
Noise (0-10 kHz)
3 μV RMS with input grounded
20 μV RMS with model cell
Electrode Test
10 mV/MΩ read on meter
100 mV/MΩ at Vm x10 output
Meter Range
± 199.9 mV full scale
Current Sensing Channel (Bath Clamp) (Im)
Noise (0-1 kHz)
4.5 nA RMS with bath clamp
10 nA RMS in output leg
I Monitor Output
1 nA/mV to 1 mA/10V in 7 steps and 3 ranges, x0.1, x1, and x10.
Gain Telegraph Output
0.2 to 2.8 V in 8 steps (200 mV/step) and 3 ranges, x0.1, x1, and x10.
Compatible with data acquisition software
Meter Range, full scale
Clamp Current: ± 199.9 μA
Electrode Voltage (Ve)
± 199.9 mV; current meter reads Ve when clamp mode switch is off.
Current Electrode Channel
Compliance Voltage
± 180 V
Clamp Speed
550 μsec; (10-90%) with 100 mV square wave command applied to model
cell
Gain
Variable AC/DC: 0 to 2000
Fixed DC Gain
Switch selected: 1 x 106
Ve DC Offset
± 200 mV at input (20 mV/turn)
Electrode Test
10 mV/MΩ read on current meter
100 mV/MΩ at Ve x10 output rear panel
Commands
Hold
Manually set with digital potentiometer, 2 digit resolution and 2
ranges:
x10 range: 0 to ± 100 mV
x20 range: 0 to ± 200 mV
External
Signals applied to COMMAND IN÷10 are attenuated by a factor of 10,
1 V applied = 100 mV command
Physical Dimensions
Case
8.9 cm x 43.2 cm x 30.5 cm (H x W x D)
Voltage Headstage
12.5 mm D x 5 cm L with 1.8 m cable
Mounting Handle
8.0 mm D x 6.3 cm L
Bath Headstage
2.3 cm x 3.5 cm x 4.2 cm (H x W x D), with 1.8 m cable
Shipping Weight
6.0 kg
Warranty
One year, parts & labor
Power Requirements
Universal: 100-130 or 220-240 VAC, 50/60 Hz, 14 VA
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