The Keysight (Agilent/HP) 3488A is a highly versatile, GPIB-programmable Switch/Control Unit designed for multi-channel signal routing and measurements in automated test systems. It features five module slots that can accommodate a wide array of multiplexer, matrix, VHF, microwave, and digital I/O modules, supporting signal switching from DC up to 26.5 GHz.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | HP-IB (IEEE-488.1) |
| Display | 12-character alphanumeric vacuum fluorescent display (VFD) with status indicators |
| Configuration Storage Battery Backup | 5-year minimum standby life |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 V / 120 V / 220 V / 240 V AC (+5%, -10%), 48 Hz to 66 Hz, 24 VA maximum |
| Operating Temperature | 0°C to 55°C |
| Dimensions (W×H×D) | 425.5 mm x 88.9 mm x 292.1 mm |
| Weight | 5.2 kg |
System Architecture & Capacity
| Parameter | Value |
|---|---|
| Number of Module Slots | 5 slots |
| Maximum Channel Capacity | Up to 50 channels (using 10-channel modules) |
| Configuration Storage | 40 non-volatile memory registers plus state 0 |
| Microprocessor Control | Built-in microprocessor control |
System Control & Programming Interface
| Parameter | Value |
|---|---|
| Remote Interface | HP-IB (IEEE-488.1) |
| HP-IB Interface Capabilities | SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0, E1 |
| HP-IB Address Selection | Rear-panel DIP switch selectable (0 to 30) |
| External Trigger Input | BNC connector, TTL level, active low, minimum pulse width 2 microseconds |
| Channel Advance Output | BNC connector, TTL level, active low, pulse width 15 to 25 microseconds |
Power Specifications
| Parameter | Value |
|---|---|
| AC Line Voltage Selection Range | 100 V / 120 V / 220 V / 240 V AC (+5%, -10%) via rear-panel slide switches |
| AC Line Frequency Range | 48 Hz to 66 Hz |
| Power Consumption | 24 VA maximum |
Physical & Mechanical
| Parameter | Value |
|---|---|
| Form Factor / Rack Units (U) | 2U (Height) |
| Chassis Width | Standard full-rack width |
Environmental & Reliability
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40°C to +75°C |
| Operating Humidity Limit | < 95% R.H. at 0°C to 40°C (non-condensing) |
Supported Module Configurations
| Parameter | Value |
|---|---|
| Option 010 Module | 10-channel relay multiplexer module |
| Option 011 Module | 10-channel general purpose relay module |
| Option 012 Module | Dual 4-channel VHF switch module (300 MHz) |
| Option 013 Module | 4 x 4 matrix switch module |
| Option 014 Module | 16-bit digital input/output module |
| Option 015 Module | Breadboard prototyping module |
| Option 016 Module | 3-channel 18 GHz microwave switch driver / switch module |
| Option 017 Module | 7-channel form-C relay module |
| Option 018 Module | 1.3 GHz 50 Ohm multiplexer module |
| Option 019 Module | 1.3 GHz 75 Ohm multiplexer module |
Option 010 Multiplexer Performance
| Parameter | Value |
|---|---|
| Option 010 Max Voltage | 250 V AC / V DC |
| Option 010 Max Current | 1 A |
| Option 010 Max Power | 30 VA / 30 W |
Option 011 General Purpose Relay Performance
| Parameter | Value |
|---|---|
| Option 011 Max Voltage | 250 V AC / V DC |
| Option 011 Max Current | 1 A |
| Option 011 Max Power | 30 VA / 30 W |
Option 012 VHF Switch Performance
| Parameter | Value |
|---|---|
| Option 012 Frequency Range | DC to 300 MHz |
| Option 012 Insertion Loss | < 1.5 dB at 300 MHz |
Option 013 Matrix Performance
| Parameter | Value |
|---|---|
| Option 013 Matrix Configuration | 4 x 4 matrix (16 crosspoints) |
| Option 013 Max Voltage | 250 V AC / V DC |
| Option 013 Max Current | 2 A |
Option 014 Digital IO Performance
| Parameter | Value |
|---|---|
| Option 014 IO Lines | 16 bi-directional lines |
Option 019 / 020 Performance
| Parameter | Value |
|---|---|
| Option 019 Impedance | 75 Ohm |
System Performance
| Parameter | Value |
|---|---|
| Scanning Speed | Up to 33 channels/s |
| Command Execution Time | 11 ms (CLOSE/OPEN) |
| Self-Test | Power-on self-test of RAM, ROM, and HP-IB interface |
Electrical Isolation
| Parameter | Value |
|---|---|
| Maximum Isolation Voltage | 250 V AC rms / 350 V DC (any terminal to chassis) |
Option 010 (HP 44470A 10-Channel Multiplexer)
| Parameter | Value |
|---|---|
| Option 010 Configuration | Dual 1-of-5 or single 1-of-10 multiplexer |
Option 011 (HP 44471A 10-Channel GP Relay)
| Parameter | Value |
|---|---|
| Option 011 Configuration | 10 independent SPST relays (Form A) |
Option 012 (HP 44472A VHF Switch)
| Parameter | Value |
|---|---|
| Option 012 Channel Configuration | Dual 1-of-4 multiplexer |
Option 014 (HP 44474A Digital I/O)
| Parameter | Value |
|---|---|
| Option 014 Logic Compatibility | TTL compatible |
| Option 014 Max Sink Current | 125 mA per line |
Option 016 (HP 44476A Microwave Switch)
| Parameter | Value |
|---|---|
| Option 016 Coaxial Switch Drive Capacity | Drives up to 3 coaxial switches |
| Option 016 Drive Voltages | +5 V, +24 V, or external drive |
Option 017 (HP 44477A Form C Relay)
| Parameter | Value |
|---|---|
| Option 017 Relay Configuration | 7 independent SPDT relays (Form C) |
| Option 017 Max Voltage | 250 V AC rms, 250 V DC |
| Option 017 Max Current | 2 A |
| Option 017 Max Power | 60 VA, 60 W |
Option 018 (HP 44478A 1.3 GHz 50 Ohm Mux)
| Parameter | Value |
|---|---|
| Option 018 VSWR | < 1.35 @ 1 GHz, < 1.5 @ 1.3 GHz |
| Option 018 Crosstalk Isolation | > 55 dB @ 1 GHz, > 50 dB @ 1.3 GHz |
| Option 018 Insertion Loss | < 1.9 dB @ 1.3 GHz |
Option 019 (HP 44478B 1.3 GHz 75 Ohm Mux)
| Parameter | Value |
|---|---|
| Option 019 Crosstalk Isolation | > 55 dB @ 1 GHz |
| Option 019 Insertion Loss | < 1.9 dB @ 1.3 GHz |
Environmental
| Parameter | Value |
|---|---|
| Maximum Operating Altitude | 4,600 m (15,000 ft) |
| Maximum Storage Altitude | 15,300 m (50,000 ft) |
Option 010 (HP 44470A) Specifications
| Parameter | Value |
|---|---|
| Option 010 Closed Channel Resistance | < 1 ̢ (initial), < 2 ̢ (end of life) |
| Option 010 Thermal Offset | < 3 V |
Option 011 (HP 44471A) Specifications
| Parameter | Value |
|---|---|
| Option 011 Closed Channel Resistance | < 1 ̢ (initial), < 2 ̢ (end of life) |
| Option 011 Thermal Offset | < 4 V |
Option 012 (HP 44472A) Specifications
| Parameter | Value |
|---|---|
| Option 012 VSWR | < 1.25 @ 300 MHz |
| Option 012 Characteristic Impedance | 50 ̢ |
Option 013 (HP 44473A) Specifications
| Parameter | Value |
|---|---|
| Option 013 Closed Channel Resistance | < 1.5 ̢ (initial), < 3 ̢ (end of life) |
| Option 013 Thermal Offset | < 3 V |
Option 014 (HP 44474A) Specifications
| Parameter | Value |
|---|---|
| Option 014 Handshake Lines | 3 lines (Strobe, Flag, I/O Gate) |
Option 015 (HP 44475A) Specifications
| Parameter | Value |
|---|---|
| Option 015 Available Voltages | +5 V (150 mA), +15 V (50 mA), -15 V (50 mA) |
Option 017 (HP 44477A) Specifications
| Parameter | Value |
|---|---|
| Option 017 Thermal Offset | < 3 µV |
| Option 017 Closed Channel Resistance | < 1 ̢ (initial), < 2 ̢ (end of life) |
Option 018 (HP 44478A) Specifications
| Parameter | Value |
|---|---|
| Option 018 Characteristic Impedance | 50 ̢ |
Option 019 (HP 44481A) Specifications
| Parameter | Value |
|---|---|
| Option 019 VSWR | < 1.15 @ 500 MHz, < 1.35 @ 1.3 GHz |
Option 020 (HP 44482A) Specifications
| Parameter | Value |
|---|---|
| Option 020 VSWR | < 1.25 @ 500 MHz, < 1.5 @ 1.3 GHz |
| Option 020 Crosstalk Isolation | > 80 dB @ 100 MHz, > 55 dB @ 1.3 GHz |
| Option 020 Insertion Loss | < 0.4 dB @ 500 MHz, < 0.9 dB @ 1.3 GHz |
Inputs & Outputs
| Parameter | Value |
|---|---|
| External Trigger Input Level | TTL compatible, negative edge triggered |
| Channel Advance Output Level | TTL compatible, active low pulse (> 10 s) |
Remote Interface
| Parameter | Value |
|---|---|
| Programming Command Set | Device-dependent ASCII commands (non-SCPI) |
Technology
Electromechanical Relay Switching
Applications
Automated Test Equipment (ATE), Multi-channel RF/Microwave Routing, General Purpose Signal Switching