Which distribution amplifier? DA12 vs DA232 vs TCA100
A distribution amplifier splits one time or frequency signal to many outputs without loss of quality. The choice between DA12, DA232 and TCA100 is not about better or worse but about which signal you distribute: RF and IRIG, RS-232 serial, or SMPTE/EBU time code. Below is a factual comparison based on the datasheets.
The short recommendation
- Choose the DA12 for RF and IRIG time code (DC level or AM modulated): twelve outputs, DC coupled, with gain adjustable per bank.
- Choose the DA232 for RS-232 serial time data: 1 input to 8 outputs (optionally 16), one of which is bidirectional.
- Choose the TCA100 for SMPTE, EBU or modulated IRIG time code: transformer-isolated outputs, two separate channels, compact.
Specifications side by side
| Feature | DA12 | DA232 | TCA100 |
|---|---|---|---|
| Signal type | RF, IRIG (DC level) and AM-modulated IRIG | RS-232 serial | SMPTE, EBU and IRIG time code |
| Inputs/outputs | 1 input → 12 outputs, or 2 × 6 | 1 input → 8 outputs (option: 16) | 2 separate, isolated channels |
| Coupling / isolation | DC coupled; two output banks, linked or separate via the rear selector | Output 1 bidirectional, 2-16 transmit only; 120 Kbps | Transformer-isolated outputs |
| Level control | Adjustable gain | — | Adjustable per channel; up to 14 Vpp (600 Ω), input 2-14 Vpp |
| Connections | — | IEC 320-C5 AC | BNC and DB-9 (balanced) |
| Power | IEC 90-240 VAC, 50/60 Hz | 110-220 VAC, 50/60 Hz | 12-28 VDC (external 120/220 VAC adapter) |
| Consumption | < 15 W | < 5 W | < 1 W |
| Size | 43 × 4.31 × 11.5 cm — 0.5 kg | 43 × 4.3 × 11.5 cm — 0.95 kg | 10.6 × 3.8 × 14 cm — 435 g |
| Compliance | FCC, CE, RoHS, ANSI | FCC, CE, RoHS, ANSI | FCC, CE, RoHS, ANSI |
| Warranty | 1 year Daylight + 4 years Masterclock | 1 year Daylight + 4 years Masterclock | 1 year Daylight + 4 years Masterclock |
When do you choose each model?
DA12 — RF and IRIG distribution
The DA12 distributes RF signals and IRIG time code, both in DC-level form and AM modulated. With 12 outputs (or two banks of 6), DC coupled and with a rear selector that links or separates the banks, it serves larger installations where one time source must reach many receivers. The adjustable gain compensates cable losses to more distant equipment.
DA232 — RS-232 serial distribution
The DA232 is specifically for RS-232 serial time data. Output 1 is bidirectional (transmit and receive), the others transmit only, up to 120 Kbps. This lets you distribute one serial time string to several systems, for example from a grandmaster to connected controllers or servers that expect a serial reference.
TCA100 — time code distribution with isolation
The TCA100 is built for audio-modulated time code: SMPTE, EBU and IRIG. Transformer-isolated outputs and two separate channels suppress ground loops and noise, which is crucial in studio and broadcast environments. Compact (about 435 g) and efficient (< 1 W), with output level adjustable per channel via the front panel.
Frequently asked questions
Which distribution amplifier do I need?
That depends entirely on the signal type you want to distribute. For RF and IRIG time code (DC level or AM modulated) you choose the DA12. For RS-232 serial time data the DA232. For SMPTE, EBU or modulated IRIG time code with transformer isolation the TCA100. They are therefore not alternatives to each other but each for a different signal.
Why not just split one signal with a T-piece?
A passive split loads the source and degrades the signal: every tap weakens and distorts it. A distribution amplifier buffers and isolates each output channel, so many devices share the same source without affecting each other or the signal quality. For time and frequency signals, where the edge matters, that is essential.
How many outputs does each amplifier have?
The DA12 provides 12 outputs from 1 input, or 2 inputs each driving 6 outputs, DC coupled, with a rear selector that links or separates the two banks. The DA232 has 8 outputs as standard (optionally up to 16), with output 1 bidirectional and the others transmit only. The TCA100 has two separate, isolated channels with individually adjustable level.
What does transformer isolation mean on the TCA100?
The TCA100 uses transformers on the outputs for galvanic separation between the channels and the source. That suppresses ground loops and noise, which is important with audio-modulated time code (SMPTE/EBU) in studio environments where several devices with different ground potentials are connected.
Unsure about the signal type? Daylight bv helps you choose the right distribution amplifier based on your source and the number of receivers.
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