The Rohde & Schwarz NAP is a highly versatile, classic dual-channel directional power meter designed for high-accuracy RF power and SWR measurements. Operating with the NAP-Z series of directional power sensors, the NAP supports simultaneous measurement of forward and reflected power across transmitter and antenna systems. Features include a combined analog moving-coil and digital LCD display, battery or mains operation, and optional remote control capabilities via GPIB.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | IEEE-488 / GPIB (with Option NAP-B2), Analog Output (with Option NAP-B1) |
| Display | Analog moving-coil meter and 3.5-digit LCD display |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 115 / 230 V AC (±10%), 47 to 440 Hz, power consumption approx. 7 VA; internal rechargeable NiCd battery |
| Operating Temperature | 0 to +50 °C |
| Dimensions (W×H×D) | 241 mm × 110 mm × 260 mm |
| Weight | 3.5 |
RF Measurement Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 0.2 to 1000 MHz (sensor-dependent) |
| Power Measurement Range | 0.1 mW to 1100 W (sensor-dependent) |
| Impedance | 50 Ω (sensor-dependent) |
| Measurement Channels | 2 channels (for forward and reflected power) |
Measurement Capabilities
| Parameter | Value |
|---|---|
| Measurement Parameters | Forward power, reflected power, SWR, reflection coefficient, return loss, modulation depth |
| Modulation Depth Range | 0 to 100% (for AM signals) |
| Power Modes | Average power (CW), Peak Envelope Power (PEP) |
| Measurement Units | W, dBm, dB |
Display and User Interface
| Parameter | Value |
|---|---|
| Analog Meter Scales | Linear and logarithmic |
Sensor Compatibility
| Parameter | Value |
|---|---|
| Compatible Sensors | R&S NAP-Z series (e.g., NAP-Z6, NAP-Z7, NAP-Z8, NAP-Z10, NAP-Z11) |
| Sensor Connector Type | 12-pin circular connector |
Power Supply and Battery
| Parameter | Value |
|---|---|
| AC Mains Input Voltage | 115 V / 230 V AC (selectable, ±10%) |
| AC Mains Frequency | 47 to 440 Hz |
| Power Consumption | 7 VA |
| Battery Power Option | Built-in rechargeable NiCd battery |
| Battery Charger | Integrated automatic charger when connected to mains |
Physical and Environmental Specifications
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +70 °C |
Accessories and Options
| Parameter | Value |
|---|---|
| GPIB Interface Option | NAP-B2 |
| Analog Output Option | NAP-B1 |
Technology
RF Directional Power Measurement
Applications
RF transmitter installation, maintenance, SWR measurement, and power calibration