Monolight Model 6200 Control Unit Sync Select Flash Trigger X Shift Spectro

Monolight Model 6200 Control Unit Sync Select Flash Trigger X Shift Spectro

The Monolight Model 6200 is a benchtop control unit designed for flash photolysis and spectrophotometry systems. It provides synchronized control of a flash lamp trigger, wavelength scanning, and signal routing to external instruments such as oscilloscopes, chart recorders, and computers. Front-panel controls include Sync Select, Flash Trigger, X Shift, Scan Speed, Phase, Gain, and a Mode selector, paired with a 4-digit numeric wavelength readout and a 0–100 analog meter for real-time signal monitoring.

Specifications & What's Included

• Brand: Monolight
• Model: 6200 Control Unit
• Form Factor: Benchtop
• Front Panel Display: 4-digit numeric readout (Wavelength), analog meter scaled 0–100
• Front Panel Controls: Sync Select, Flash Trigger, X Shift, Scan Speed, Phase, Gain, Mode selector
• Autoscan: On/Off with adjustable Scan Speed (°/sec) and Sample Step controls
• Flash Mode: A, B, C selectable via rear-panel switch
• Rear – COMPUTER output group: Stop/Start, Event, S/N Out, Reset, Out (BNC connectors)
• Rear – SCOPE output group: Flash Trig, Sig In, Sig Out, X Scale, Trig Out, Ext Sync (BNC connectors)
• Rear – CHART output group: Stop/Start, Event, S/N Out, Reset, Out (BNC connectors)
• Included Cable: Attached multi-pin 6-pin DIN round connector cable
• Enclosure: Tan/beige metal chassis, typical of 1970s–1980s UK scientific instrumentation

Applications

The Monolight Model 6200 Control Unit was designed for use in flash photolysis research systems — a technique used in physical chemistry and biochemistry to study fast photochemical reactions by exciting a sample with a brief, intense flash of light and then monitoring transient absorption or emission over time. The control unit coordinates the flash lamp trigger timing, wavelength scan, and data acquisition routing, distributing signals simultaneously to a chart recorder, oscilloscope, and computer interface via its rear BNC output banks. Monolight was a British manufacturer that supplied spectroscopy and flash photolysis instrumentation to university and industrial research laboratories primarily through the 1970s and 1980s. Systems like the Model 6200 are still found in legacy spectroscopy lab setups and are sought by researchers maintaining or restoring Monolight flash photolysis systems. The multi-section rear panel — with dedicated Computer, Scope, and Chart output groups — reflects the multi-channel data recording approach common in research instrumentation of that era.