| Additional NRVD-specific features in bold |
| Measurement functions | average power,pulse power,peakenvelope power
AM,reflection,DC valtage
(depending on sensor) |
| Frequency and level range | DC to40 GHz,100 pW to 30W
9 KHz to 3 GHz,200μV to 1000V
(depending on sensor) |
Probes and sensors
Display | all NRV sensorsand URV5 probes LCD for digits,units,menu-guided operation and analog display,adjust-ablebacklighting |
| Display of results | single-channel(withoptional display of correction frequency) or dual-channel |
| Absolutereadout | W,dBm, V, dBμV,dBV |
| Relative readout NRV5,URV55 | dB,%W or %V relative to astored reference value |
| Relative readout NRVD | dB,difference,percent and ratio,relafive to a stored reference value or to the second measurementchannel;VSWR,reflection coefficient,return loss in dB,AM modulation depth |
Analog display
Digital display and resolution | automaticor with selectable scale max.4(1/2) digits,resolution selectable(0.1/0.01/0.001dB) |
| Display filtering | averaging over1 to 512 readings to reduce display noise;manual or automatic setting dependingon measurement range and resolution |
| Displaynoise | see sensors from page 262/266 |
| Measurementrate | see table below |
| Accuracyof URV55 (without sensor) |
18 to 28℃
10 to 40℃
0 to50℃
| ±0.02 dB ±1 digit
±0.04 dB ±1 digit
±0.06dB ±1 digit |
| Accuracy of powerreadout |
| in W ( NRVS /D without sensors) | 0.4%(0.3%)+1 digit(18 to 28℃)
0.9% (0.8%)+1 digit(10 to 40℃)
1.4% (1.3%)+1digit(0 to 50℃) |
| Zero adjustment | manualor via IEC/IEEE bus,duration apprax.4 s |
| Frequency responsecorrection | sensor-specific calibrationdata taken into account;numericalentry of test frequency (keyboard or via IEC/IEEE bus)or by frequency-proportionalDC voltage |
| Attenuation compensation | externalattenuation or gain taken into account;data entry via keyboard or IEC/IEEE bus,range±200 dB |
| Entry of reference value | measuredvalue on keystroke or numerical entry via keypad or IEC/IEEE bus |
| Reference impedance | for conversion between voltage andpower,automatic readout of reference impedance from sensor data memory or numericalentry via keyboard or IEC/IEEE bus(for RF probe) |
| Remote control | IEC625(IEEE 488),SCPI,control of all instrument functions |
| Interface functions | SH1,AH1,T6,L4,SR1,PL1,DC1,DT1,PP0,PP1 |
| DC frequency input |
URV55, NRVS
NRVD
Connector
Input voltage range | standard
option NRVD-B2
BNC
±12V, linear with selectable scale |
| DCoutput |
URV 55, NRVS
NRVD
Connector
Left-/right-hand full-scale value
Accuracy
Channels | standard
option NRVD-B2
BNC,R out =1K Ω
EMF proportional analogdisplay
corresponding to 0/+3 V
±5 mV
1,2 |
| Input/OutputOption NRVD-B2 | 2 simultaneous DC voltage outputs,DC frequencyinput,trigger input(TTL,active low),ready output(TTL,active high) |
| Sensor check source |
URV55, NRVS
NRVD
Output power
Frequency
VSWR
RF connector | option NRVS -B1
standard
1 mW ±0.7%
50 MHz
1.05, ≤ 1.03
N female |
| General data |
| Powersupply | 115 V + 15/-22%(-15%)
47 TO 63(440)Hz;
230V +15/-22%,
47 to 63 Hz,13VA
100/120/220V±10%,
230V-6/+15%;
47to 400 Hz(25 VA) |
| Dimensions(W×H×D);weight | 219mm×103 mm×350 mm;3.2 kg
219 mm×147 mm×350 mm;4.5 kg |
| Measurementtime in seconds(from trigger to output of (first byte) depending on filter setting |
| Resolution | Filter number |