197光电斩波器
价 格：询价
产 地：美国更新时间：2021/9/10 14:45:14
品 牌：Signal Recovery型 号：197
状 态：正常点击量：2516
联 系 人：刘先生
电 话：86-15010150340
传 真：86-10-58237188
等 级： (第 17年)
性 质：生产型,贸易型,服务型,
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The model 197 is a compact, high performance, low-cost optical chopper, offering features and benefits that are ideal for use in modern photometric systems.
The unit is self contained, comprising a dual aperture chopper blade, motor and the necessary driving electronics. Each aperture provides an independent reference output allowing simultaneous dual frequency operation (10:1 ratio) or dual-path experiments. Frequency control is by a precision internal oscillator set by a 4-digit push-button selector on the unit or by the application of an external AC reference signal. The unit is powered via a remote line power supply.
Mounting holes are provided in the base and right-hand side of the housing (viewed from the front) to allow for mounting the model 197 onto an optical bench or support rod.
产品参数
| Operation |
|
| |
Frequency |
15 Hz to 3000 Hz |
| |
outer sector |
150 Hz to 3000 Hz |
| |
inner sector |
15 Hz to 300 Hz |
| |
Control |
|
| |
manual |
Digital push-button |
| |
external |
Application of 0.5 V to 10 V sine or squarewave, 150 Hz to 3000 Hz to Sync In BNC connector |
| |
Internal Frequency |
|
| |
accuracy |
±20 ppm at 25 °C |
| |
stability |
±30 ppm/ °C (range -10 °C to 60 °C) |
| |
Jitter (measured pk-pk and presented as a % of a full cycle) |
|
| |
outer sector |
|
| |
150 to 500 Hz |
blade only: 0.5%; blade + electronics: 1.5% |
| |
500 to 3000 Hz |
blade only: 0.5%; blade + electronics: 1.0% |
| |
inner sector |
|
| |
15 to 50 Hz |
blade only: 0.5%; blade + electronics: 1.5% |
| |
50 to 300 Hz |
blade only: 0.5%; blade + electronics: 1.0% |
| |
Lock indication |
Bicolor LED, showing Red when unlocked and Green when locked |
| |
Settling Time
|
7 s nominal at 1 kHz from switch-on;
9 s nominal for frequency change from 150 to 3000 Hz;
30 s nominal for frequency change from 3000 to 150 Hz |
| Outputs |
Sync Out 1 |
10 V pk-pk squarewave at outer sector chopping frequency, 150 - 3000 Hz |
| |
Sync Out 2 |
10 V pk-pk squarewave at inner sector chopping frequency, 15 - 300 Hz |
| |
Connectors |
BNC |
| |
Impedance |
10 kW. Note that although the output voltage is 10 V pk-pk, the high output impedance means that the outputs can be directly connected to the Reference Frequency input of any SIGNAL RECOVERY lock-in amplifier without causing problems. |
| Power Requirements |
Via power adapter for 110 V AC, 50/60 Hz or 220/240 V AC, 50/60 Hz or external isolated 17 V to 20 V DC or AC rms. supply. State which voltage is required when ordering |
| Dimensions |
4" high x 4.8" wide x 1.7" deep
(104 mm wide x 122mm wide x 44mm deep) |
| Weight |
1 lb (0.45 kg) excluding power supply |
