HP/Agilent 53181A RF Frequency Counter Description:
The Agilent 53181A RF counter provides fast, precise results with the core measurements you are likely to need for RF tests. It provides the same signal processing and test automation features as the Agilent 53131A and Agilent 53132A universal counters, along with 10 digits/second resolution. The Agilent 53181A offers a single 225 MHz channel standard, and you can choose an optional second channel that measures up to 1.5 GHz, 3 GHz, 5 GHz or 12.4 GHz.

HP/Agilent 53181A RF Frequency Counter Specifications:

• Frequency range: dc to 225 MHz
• Frequency resolution: 10 digits/s
• Dynamic range: 20 mV to ±5 Vac (dc to 100 MHz), 30 mV to ±5 Vac (100 to 200 MHz), 40 mV to ±5 Vac (200 to 225 MHz)
• Input impedance: 50 ohm or 1 megohm, ac or dc
• Standard time base accuracy: 10 MHz, <3 X 10-7th/month (<2 X 10-7th/month with option 001)
• Measurements include frequency, frequency ratio (with optional channel 2), period and peak voltage
• Automated limit tests and one-button measurement setups for fast, easy operation
• Onboard digital signal processing speeds measurements
• Built-in statistics feature lets you simultaneously measure average, min/max, and standard deviation
• GPIB (IEEE-488) and RS-232 (talk only) interfaces
• 100-120 Vac ±10%; 50, 60, 400 Hz ±10% / 220, 240 Vac ±10%; 50, 60 Hz ±10% operation
• Weight: 7 lb; Size: 89 mm (3.86 in)H x 213 mm (8.35 in)W x 348 mm (10.87 in)D