V340 8-channel VME function generator with transformer coupling
- 8 channels of independently programmable sine, sawtooth, triangle, and square/pulse/PWM
- Output frequency range 0 to 2 MHz with 0.004 Hz resolution
- DC coupled outputs to 20.48 volts peak-to-peak
- Programmable offset allows wave + offset or direct DC DAC functionality
- Channel sync provisions allow generation of polyphase or synchronized waveforms
- Optional transformers provide isolated outputs up to 100 volts peak-to-peak and fault simulation
- Auxiliary connector provides channel sync outputs
- One general-purpose, differential, frequency counter input
- Clearly labeled dipswitches set VME address; no jumpers, headers, or trimpots
- Includes channel test connector
- Optional built-in self-test (BIST)
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The V340 provides eight independent DDS-synthesized waveform outputs, each programmable for frequency and amplitude. Any output may be switched to a front-panel test connector, allowing in-crate calibration check without removing field cables.
Optional software-switchable transformers are available with 1:1 or 5:1 ratios, providing isolated outputs to 100 volts peak-to-peak. Built-In-Self-Test is optional.
| FUNCTION | 8-channel VME function generator |
| DEVICE TYPE | 16-bit VME register-based slave: A24:A16:D16 Implements 128 16-bit registers at switch selectable addresses in the VME 16 or 24 bit addressing spaces |
| CHANNELS | 8 function generators, DC coupled -2x and -3x versions add programmable isolation per channel, fault simulation 8 TTL channel synchronization signals |
| FUNCTION WAVEFORMS | Sine, sawtooth, triangle, pulse |
| FAULT SIMULATION (TRANSFORMER VERSIONS ONLY) | High side ground short Low side ground short Differential short Open circuit |
| FUNCTION AMPLITUDE | DC coupled, programmable ±10.24 V and ±1.024 ranges Optional isolation transformers (1:1 or 5.4:1) |
| OUTPUT IMPEDANCE | 50Ω typical |
| RESOLUTION | Amplitude, 14 bits Frequency, 30 bits (~ 0.0037 Hz) Pulse duty, 16 bits (~ 0.0015 %) |
| BANDWIDTH | DC coupled: DC to 2 MHz 1:1 transformers: 100 Hz to 250 kHz 5.4:1 transformers: 100 Hz to 50 kHz |
| OFFSET ERROR | ±10.24 V range: 10 mV max ±1.024 V range: 3 mV max |
| GAIN ERROR | DC coupled: 0.5 % max Transformer coupled: 10% max (unloaded) |
| FLATNESS | ±0.25 dB over DC coupled range |
| FREQUENCY ACCURACY | 100 PPM |
| SYNC OUTPUTS | VH: 4.8 V typical, 4.2 V min @ 24 mA VL: 0.1 V typical, 0.6 V max @ 24 mA Duty cycle: 50% ±22 ns max |
| FREQUENCY COUNTER INPUT | Differential, 2 V to 300 V P-P 10 Hz to 2 MHz |
| OPERATING TEMPERATURE | 0 to 60°C; extended MIL/COTS ranges available |
| CALIBRATION INTERVAL | One year |
| POWER | Standard VME supplies: +5 V, 0.8 A max +12 V, 0.5 A max -12 V, 0.5 A max |
| CONNECTORS | One D25 female, 8 wave outputs and one differential frequency input One SCSI 50-pin female, sync outputs and digital expansion One D9 male, test/calibration check |
| INDICATORS | LEDs indicate VME access, CPU activity, error conditions Additional user programmable LED |
| PACKAGING | 6U single-wide VME module |
| CONFORMANCE | ANSI/VITA 1-1994 (R2002) VMEbus spec; does not support byte writes |
Block Diagram: V340 function generator with transformer coupling
Datasheet: V340 function generator with transformer coupling
V340-10: 8-channel VME function generator
V340-11: 8-channel VME function generator with BIST
V340-20: 8-channel VME function generator with transformer coupling with switchable 1:1 transformers
V340-21: 8-channel VME function generator with transformer coupling with switchable 1:1 transformers and BIST
V340-30: 8-channel VME function generator with transformer coupling with switchable 5:1 transformers
V340-31: 8-channel VME function generator with transformer coupling with switchable 5:1 transformers and BIST