---
type: product
schema_version: 1
stock_number: "52158-1"
canonical_url: "https://www.artisantg.com/52158-1/TTI-C-995"
json_url: "https://www.artisantg.com/52158-1/TTI-C-995.json"
generated_at: "2026-11-07T21:22:04.678Z"
last_updated: "2026-10-14T13:00:51.160-05:00"
---

# TTI C-995 Optical Chopper Controller

_Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._

## Summary

- Manufacturer: TTI
- Model: C-995
- Condition: Used and in Excellent Condition
- Price: $650.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 8 lb, estimated
- Shipping dimensions: 14X14X6 in, estimated

## Categories

- Test Equipment > Electrical Test > Controllers (primary)
- Lab & Analytical > Optical

## Details

### Configuration

- Control Method: Phase-Locked Loop (PLL), Direct Digital Synthesis
- Display: 5-Digit LED
- RS-232 Interface: 9600 Baud, N-8-1, 3 Wire
- Frequency Resolution: 0.01 Hz (Front Display), 0.001 Hz (RS-232)
- Input Power: 85-260 VAC, 50-60 Hz, 15 VA Maximum

## Function

Generates and stabilizes a high-precision optical chopping drive by phase-locked loop and direct digital synthesis, providing programmable chopping frequency with stable phase relative to a reference. Supplies drive/control signals to the optical chopper, with local 5-digit LED readout and remote control via RS-232 at 9600 baud, N-8-1, 3-wire. Frequency resolution is 0.01 Hz on the display and 0.001 Hz over RS-232. Accepts 85-260 VAC input, 50-60 Hz, up to 15 VA.

## Images

- <https://www.artisantg.com/itemimages/tti_c_995_view1_2026717125435.jpg>
- <https://www.artisantg.com/itemimages/tti_c_995_view2_2026717125435.jpg>
- <https://www.artisantg.com/itemimages/tti_c_995_view3_2026717125435.jpg>
- <https://www.artisantg.com/itemimages/tti_c_995_view4_2026717125435.jpg>
